High-yield overview

Energy transfer | Neurovascular status | Joint involvement | Debridement strategy

LowEnergy Changes Strategy

JointRemove Intra-Articular Fragments

VesselHard Signs Change Sequence

SerialCompartment Checks

Critical Must-Knows

Do not judge severity by skin wound size. A small entry wound can hide fracture comminution, vascular injury or compartment syndrome.
Energy transfer is the key concept. Velocity, yaw, fragmentation, tissue resistance and bone strike determine tissue damage.
Low-energy extra-articular fractures are not automatically massive open-fracture operations. They are often managed like the equivalent closed fracture with appropriate wound care.
Intra-articular bullets should be removed. Synovial fluid exposes lead and cartilage to ongoing chemical and mechanical injury.
Hard vascular signs change the sequence. Perfusion and haemorrhage control take priority over definitive fracture fixation.
High-energy or contaminated wounds need formal debridement and staged reconstruction. Do not close them primarily when tissue viability is uncertain.

Clinical Pearls

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The safe first sentence is: assess the patient, limb perfusion, neurological status, wound energy, contamination, joint involvement and fracture stability.
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The orthopaedic decision is not 'bullet equals open fracture protocol for everything'; it is energy, contamination, joint violation and stability.
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Routine removal of deep asymptomatic extra-articular fragments can cause more damage than observation.
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A fracture with vascular repair has a low threshold for prophylactic fasciotomy, especially after ischaemia or reperfusion.

Overview

Gunshot wounds produce orthopaedic problems through penetrating soft tissue injury, fracture, contamination, vascular injury, nerve injury, compartment syndrome and retained foreign material. The visible wound is only the entry point; the injury that matters is the tissue damage along the projectile path and the zone of energy transfer around it.

Radiograph of a left arm showing a comminuted, displaced humeral shaft fracture with a radiodense projectile fragment lying in the fracture zone, marked by an arrow. — A comminuted, displaced humeral shaft fracture in a left arm (printed L marker). The arrow marks the fracture; a radiodense projectile fragment lies within the fracture zone. Fracture stability and tissue damage, not the presence of the bullet, decide fixation.Credit: Moutaouakkil et al., Cureus, CC BY 4.0, via Europe PMC (PMC12126751), Figure 1

Why it matters. Civilian gunshot wounds range from low-energy soft tissue wounds to comminuted open fractures with vascular injury, so the decision traps run in both directions: over-treatment causes unnecessary tissue damage, and under-treatment misses joints, vessels, compartments and contamination. Missed infection, nonunion, nerve injury, vascular compromise and intra-articular lead can produce major disability.

Core Principle

Treat the patient and limb first, then the projectile. The operation is decided by physiology, perfusion, tissue viability, contamination, joint involvement and fracture stability.

Describe the wound precisely. Avoid describing a wound simply as "a gunshot fracture". A useful description states:

Low-energy or high-energy mechanism.
Extra-articular or intra-articular path.
Clean, contaminated or delayed presentation.
Stable or unstable fracture.
Normal or abnormal neurovascular status.
Isolated limb injury or polytrauma.
Retained fragment location and whether it matters.

Anatomy and Biomechanics

Ballistic tissue injury schematic showing entry wound, permanent cavity, temporary cavitation, bone comminution, contamination track and exit wound — A projectile track through a limb, labelled from entry wound to exit wound: the permanent cavity along the track, the dashed outline of temporary cavitation around it, bone comminution where the projectile strikes bone and the contamination track beyond it. The footer carries the rule: energy transfer depends on velocity, yaw, fragmentation and tissue resistance.Credit: Original OrthoVellum illustration

Permanent cavity. The permanent cavity is the direct tissue track made by the projectile and fragments, produced by crushing, cutting and shearing. It defines the true contaminated track and the structures that may be disrupted.

Temporary cavitation. Temporary cavitation is radial tissue stretch around the projectile path. It is more important in high-energy wounds, with fragmenting projectiles and in tissues that do not tolerate stretch well: muscle may recover if viable; vessels, nerves and inelastic compartments may not.

Bone strike. When a projectile hits bone, energy transfer rises abruptly and the bone itself becomes secondary missiles. Comminution and segmental defects may occur, the risk of compartment syndrome and vascular injury increases, and the wound may behave more like a high-energy open fracture even if the skin wounds look small.

Low energy versus high energy. The low-energy civilian pattern is usually a handgun-type projectile at lower velocity, often with limited cavitation, leaving a narrow wound track with limited devitalisation. The high-energy pattern, from a rifle, fragmentation, blast, a shotgun at close range or any high-energy transfer, leaves a wide zone of devitalised and contaminated tissue. What each pattern means for debridement, closure and fixation is set out under Classification and Management.

Energy Transfer Sentence

Velocity is important because kinetic energy rises with the square of velocity, but tissue damage is determined by the energy actually transferred into the limb. Yaw, fragmentation, bone strike and tissue resistance all matter.

Classification

Classify the injury in a way that changes treatment. Weapon labels alone are less helpful than tissue behaviour.

Low-energy

Features: Limited soft tissue injury, small wound track, often handgun-type civilian injury.
Treatment Meaning: May be managed like equivalent fracture if extra-articular and clean.

High-energy

Features: Large temporary cavity, devitalised tissue, bone fragmentation, blast or rifle-type transfer.
Treatment Meaning: Formal debridement, staged care and soft tissue planning.

Shotgun

Features: Variable; close-range injuries can be devastating with pellets, wad and broad contamination.
Treatment Meaning: Treat by tissue destruction and contamination, not by the word shotgun alone.

Blast combined injury

Features: Penetrating fragments plus crush, burns, contamination and systemic trauma.
Treatment Meaning: Damage-control principles and repeated debridement are common.

Energy-Based Classification
Pattern	Features	Treatment Meaning
Low-energy	Limited soft tissue injury, small wound track, often handgun-type civilian injury.	May be managed like equivalent fracture if extra-articular and clean.
High-energy	Large temporary cavity, devitalised tissue, bone fragmentation, blast or rifle-type transfer.	Formal debridement, staged care and soft tissue planning.
Shotgun	Variable; close-range injuries can be devastating with pellets, wad and broad contamination.	Treat by tissue destruction and contamination, not by the word shotgun alone.
Blast combined injury	Penetrating fragments plus crush, burns, contamination and systemic trauma.	Damage-control principles and repeated debridement are common.

Clinical Assessment

History. Do not rely on the patient's description of calibre or velocity to decide treatment; use the clinical wound, imaging and tissue findings. The history should clarify:

Time of injury and time to antibiotics.
Weapon type if known, distance, number of shots and whether shotgun or blast was involved.
Environment: street, farm, water, soil, clothing, shoe or bowel contamination.
Immediate bleeding, tourniquet use, transient limb ischaemia or prehospital reduction.
Numbness, weakness, severe pain, progressive swelling or increasing analgesia requirement.
Tetanus status, allergies, anticoagulation, diabetes, smoking and immunosuppression.

Examination. Work through the limb in order and write down what each step finds; the table gives what must be documented at each step and why it changes the next decision.

Look

What to Document: Entry and exit wounds, soft tissue loss, contamination, swelling, deformity, expanding haematoma.
Why It Matters: Defines wound energy and urgent vascular concern.

Feel

What to Document: Compartments, bony tenderness, crepitus, temperature and capillary refill.
Why It Matters: Tense compartments and cool limb change urgency.

Move

What to Document: Active motor function before reduction or anaesthesia.
Why It Matters: Baseline nerve function may be lost later if not recorded.

Nerves

What to Document: Named motor and sensory testing relevant to the region.
Why It Matters: Ballistic nerve injuries can be neuropraxia, partial laceration or complete transection.

Vessels

What to Document: Pulses, Doppler signals, ABI/API, capillary refill and hard signs.
Why It Matters: Determines CTA, exploration, shunt or repair.

Joints

What to Document: Trajectory across joint, haemarthrosis, intra-articular air or fragment.
Why It Matters: Changes removal and washout decisions.

Examination Checklist
Step	What to Document	Why It Matters
Look	Entry and exit wounds, soft tissue loss, contamination, swelling, deformity, expanding haematoma.	Defines wound energy and urgent vascular concern.
Feel	Compartments, bony tenderness, crepitus, temperature and capillary refill.	Tense compartments and cool limb change urgency.
Move	Active motor function before reduction or anaesthesia.	Baseline nerve function may be lost later if not recorded.
Nerves	Named motor and sensory testing relevant to the region.	Ballistic nerve injuries can be neuropraxia, partial laceration or complete transection.
Vessels	Pulses, Doppler signals, ABI/API, capillary refill and hard signs.	Determines CTA, exploration, shunt or repair.
Joints	Trajectory across joint, haemarthrosis, intra-articular air or fragment.	Changes removal and washout decisions.

Hard vascular signs. Hard signs include pulsatile bleeding, expanding haematoma, bruit or thrill, absent distal perfusion, ischaemic limb and rapidly progressive neurological deficit from ischaemia. These findings require immediate vascular decision-making rather than delayed outpatient fracture review.

Compartment syndrome risk. Gunshot wounds can cause compartment syndrome through fracture bleeding, vascular injury, reperfusion, swelling, crush, tight dressings or delayed presentation. Pain with passive stretch, tense compartments and increasing analgesic requirement remain important, but obtunded or intubated patients need pressure measurement and proactive monitoring.

Three-dimensional CT angiographic reconstruction of a lower limb after gunshot injury, with a circle at the knee marking a delayed popliteal artery pseudoaneurysm and an arrow on the calf marking the abnormal distal arterial course. — Three-dimensional CT angiographic reconstruction of a lower limb after a gunshot wound. The circle at the knee marks a delayed popliteal artery pseudoaneurysm and the arrow on the calf the abnormal distal arterial course. Pulses and an initially viable limb do not exclude intimal injury, pseudoaneurysm or later thrombosis; trajectory, ABI/API and serial examination decide when CTA is required.Credit: Khelifi et al., Cureus, CC BY 4.0, via Europe PMC (PMC12241442), Figure 2

Common Error

Do not be reassured by palpable pulses alone. Normal pulses do not exclude compartment syndrome, and a normal pulse can coexist with a major venous injury, intimal arterial injury or evolving swelling. Document motor, sensory, capillary refill, Doppler signals and ankle-brachial index when appropriate; obtain vascular imaging or direct vascular surgery input when hard signs or abnormal perfusion are present.

Differential diagnosis of the painful, swollen gunshot limb. A small skin wound can hide several time-critical diagnoses. The differential is really a question of which limb-threatening process is driving the pain and swelling.

Arterial injury / ischaemia

Discriminating Features: Hard signs as above, with a cool, pale ischaemic limb.
Key Test: Examination plus ABI; CTA if signs equivocal.
First Action: Vascular surgery, haemorrhage control, shunt or repair with bone stabilisation.

Acute compartment syndrome

Discriminating Features: Pain out of proportion, pain on passive stretch, tense compartments, escalating analgesia; pulses often present.
Key Test: Serial examination; compartment pressures if obtunded.
First Action: Urgent fasciotomy; do not wait for pulselessness.

Septic / contaminated joint

Discriminating Features: Trajectory across a joint, effusion, intra-articular gas or fragment, especially after a bowel-traversing path.
Key Test: Imaging for joint violation; treat as septic arthritis if missile crossed large bowel.
First Action: Washout, fragment removal and joint-appropriate antibiotics.

Evolving deep infection

Discriminating Features: Delayed presentation, fever, spreading erythema, purulent or malodorous drainage.
Key Test: Deep operative cultures (superficial swabs are inferior).
First Action: Debridement and targeted antibiotics.

Uncomplicated soft-tissue wound

Discriminating Features: Low-energy, extra-articular, normal perfusion, soft compartments, no contamination.
Key Test: Clinical assessment and orthogonal radiographs.
First Action: Local wound care, tetanus and selective antibiotics; observe deep asymptomatic fragments.

Distinguishing the Limb-Threatening Diagnoses
Diagnosis	Discriminating Features	Key Test	First Action
Arterial injury / ischaemia	Hard signs as above, with a cool, pale ischaemic limb.	Examination plus ABI; CTA if signs equivocal.	Vascular surgery, haemorrhage control, shunt or repair with bone stabilisation.
Acute compartment syndrome	Pain out of proportion, pain on passive stretch, tense compartments, escalating analgesia; pulses often present.	Serial examination; compartment pressures if obtunded.	Urgent fasciotomy; do not wait for pulselessness.
Septic / contaminated joint	Trajectory across a joint, effusion, intra-articular gas or fragment, especially after a bowel-traversing path.	Imaging for joint violation; treat as septic arthritis if missile crossed large bowel.	Washout, fragment removal and joint-appropriate antibiotics.
Evolving deep infection	Delayed presentation, fever, spreading erythema, purulent or malodorous drainage.	Deep operative cultures (superficial swabs are inferior).	Debridement and targeted antibiotics.
Uncomplicated soft-tissue wound	Low-energy, extra-articular, normal perfusion, soft compartments, no contamination.	Clinical assessment and orthogonal radiographs.	Local wound care, tetanus and selective antibiotics; observe deep asymptomatic fragments.

Imaging and Investigations

Plain radiographs. Order orthogonal views of:

The injured bone or region.
The joint above and below when a long bone is involved.
Adjacent joints when the trajectory is near a joint.
The pelvis or abdomen when the bullet path may be transpelvic.

Read the films for the fracture pattern, comminution, segmental bone loss and cortical violation; for the location of any retained fragment, whether intra-articular, intra-bursal, in extra-articular soft tissue, within bone or near a neurovascular bundle; for intra-articular gas or haemarthrosis clues; and for foreign material and clothing debris when visible. Bullet fragmentation on the film suggests higher energy transfer.

AP radiograph of a right knee showing a retained metallic fragment projected over the intercondylar region. — AP radiograph of a right knee (printed R marker) with a retained metallic fragment projected over the intercondylar region. A single AP film cannot prove whether the fragment is intra-articular or posterior to the capsule, so localise it in two planes and, when necessary, by CT before removal.Credit: Alsabti et al., Clinical Case Reports, CC BY 4.0, via Europe PMC (PMC12747070), Figure 1

CT. CT is useful for intra-articular fracture extension; for the pelvis, acetabulum, foot, ankle, hand and complex periarticular injuries; for localising a retained fragment when removal is planned; for bone loss and fixation planning; and for a transpelvic trajectory with its associated visceral concern.

Axial CT image showing a projectile embedded in the humeral head with surrounding metal artefact. — Axial CT through the shoulder: a projectile lies embedded in the humeral head with a starburst of metal artefact around it. CT defines the fragment's relationship to subchondral bone and the joint, and is especially useful when removal requires an exact operative corridor or when radiographs cannot establish intra-articular extension.Credit: To et al., JSES Reviews, Reports, and Techniques, CC BY 4.0, via Europe PMC (PMC11329011), Figure 3

CTA and vascular studies. CTA is indicated when perfusion is abnormal, ABI/API is abnormal, hard or soft vascular signs exist, or the projectile path is close to a major vessel with concerning findings. Do not delay direct vascular surgery for a clearly ischaemic limb when the diagnosis is clinically obvious.

Laboratory tests. Blood tests depend on severity: a full blood count and group and crossmatch in major trauma, and creatine kinase, renal function and urine myoglobin if there is crush, ischaemia or compartment risk. Inflammatory markers are not useful for the acute decision but may help delayed infection follow-up. A baseline blood lead level belongs to the retained-fragment situations set out under Retained Bullet Fragments.

Management Algorithm

Debridement and fixation strategy matrix for extremity gunshot wounds — The four working categories, each with its operation: low-energy extra-articular, joint violation, high-energy or gross contamination, and vascular injury or compartment risk. The footer gives the rule: the wound, energy, contamination, joint involvement and physiology decide the operation.Credit: Original OrthoVellum illustration

In parallel with resuscitation. An unstable patient, with major haemorrhage, shock, or an airway, chest or abdominal injury, gets the primary survey, haemorrhage control and trauma resuscitation before any fracture detail. The limb measures run alongside:

Control external haemorrhage with direct pressure, haemostatic dressing or tourniquet when needed.
Photograph wounds before theatre when practical, then cover with a sterile dressing.
Splint the limb in a position that protects soft tissue and neurovascular structures.
Give analgesia.
Give tetanus prophylaxis according to immunisation status and wound risk.
Give antibiotics according to wound severity, contamination, joint involvement and local protocol.
Do not probe the wound blindly in the emergency department.

Surgical Technique

This section describes operative principles rather than one universal operation. The correct operation depends on the limb region, wound, fracture and associated injuries.

Confirm patient identity, limb, imaging, antibiotics, tetanus status and vascular plan.
Position to allow access to entry wound, exit wound, fracture and potential vascular repair.
Prep widely; include adjacent joints if the trajectory may involve them.
Extend wounds only as needed for safe exposure and debridement.
Identify the projectile track, but do not tunnel blindly through healthy tissue.
Excise non-viable skin and subcutaneous tissue.
Assess muscle using colour, consistency, contractility and capacity to bleed.
Remove loose dead bone, gross debris, clothing fragments and heavily contaminated foreign material.
Preserve bone and soft tissue required for reconstruction when viable.
Irrigate with low-pressure fluid; avoid tissue-destructive high-pressure lavage.
Obtain deep cultures if infection is suspected or delayed presentation is infected.
Stabilise the fracture in a way that protects soft tissue access.
Leave wounds open or use temporary coverage when viability is uncertain.
Plan second look and reconstruction early.

Retained Bullet Fragments

Retained bullet decision diagram showing extra-articular observation and intra-articular removal indications — Remove or observe? Left panel, an extra-articular soft-tissue fragment (arrow), usually observed if asymptomatic; right panel, an intra-articular fragment at the knee (arrow), removed because of cartilage damage, synovitis and lead arthropathy. The centre lists the removal indications and the rule not to chase deep asymptomatic extra-articular fragments.Credit: Original OrthoVellum illustration

Remove. Remove, or strongly consider removal, when the fragment is:

Intra-articular.
Intra-bursal or in a synovial sheath.
Intravascular, with embolic risk (see bullet embolism below).
Causing nerve compression.
Threatening a vessel or repair.
Infected or associated with abscess.
Symptomatic and safely accessible.
Encountered during planned exposure without added morbidity.
In the palm, sole or other pressure-bearing region where it causes functional symptoms.

Observe. Observation is reasonable when the fragment is deep, extra-articular and asymptomatic, lies within soft tissue without causing mechanical symptoms, has no infection, nerve compression, vascular risk or joint communication, and removal would require extensive dissection through healthy tissue.

Lead arthropathy. Lead dissolves more readily in synovial fluid than in inert soft tissue, so a fragment in synovial fluid, intra-articular or intra-bursal, raises blood lead far more than an inert soft-tissue fragment does; multiple fragments and an associated fracture also raise the risk. Retained intra-articular fragments can cause synovitis, cartilage damage, radiographic lead deposition, systemic lead toxicity and secondary arthritis, and symptoms may appear years later.

Surveillance. When retained intra-articular fragments are known, ask about pain, swelling, stiffness, fatigue, abdominal symptoms, neuropathy and cognitive symptoms. Check a baseline blood lead level when a retained fragment is intra-articular, intra-bursal, multiple, symptomatic or long-standing, and coordinate medical toxicology or physician input for elevated levels or systemic symptoms.

The Missing Bullet - Suspect Bullet Embolism

Bullet embolism is a classic trap: the missile has entered a vessel and travelled.

When to suspect it: an entry wound with no exit wound and no projectile where the trajectory predicts, or a bullet that has moved between serial films.
Venous bullet embolism: the fragment travels with venous return toward the right heart and pulmonary circulation - it can lodge in the right ventricle or a pulmonary artery and cause arrhythmia, valvular injury or pulmonary infarction; paradoxical (arterial) embolism is possible with a septal defect.
Arterial bullet embolism: the fragment lodges distally and causes limb (or organ) ischaemia - pulse deficit distal to a proximal wound is the clue.
Action: if the bullet is "lost", image to find it (radiographs of chest/abdomen/limb, CT/CTA, echo) before assuming it is simply retained in soft tissue. Retrieve embolised bullets that cause ischaemia, are intracardiac/intravascular with embolic risk, or are symptomatic (endovascular retrieval or open) - do not leave a migratory intravascular missile.

Axial (a) and coronal (b) contrast-enhanced CT images showing a bullet, marked by arrows, lodged in the left pulmonary artery. — Contrast-enhanced CT in axial (a) and coronal (b) planes: a bullet (blue arrows) lies in the left pulmonary artery, on the image-right side of the chest. An entry wound without an exit and a projectile absent from the expected trajectory should trigger a search beyond the local limb film; CT/CTA and echocardiography localise intravascular missiles and guide endovascular or open retrieval.Credit: Fernandez-Ranvier et al., Cureus, CC BY, via Europe PMC (PMC7294874), Figure 2

Plumbism - the Systemic Lead Toxicity Behind the Surveillance

Clinical features: abdominal colic and constipation, anaemia (microcytic/normocytic) with basophilic stippling of red cells, peripheral motor neuropathy (classically wrist/foot drop), fatigue, a gingival "lead line", nephropathy, and at high levels encephalopathy (especially in children).
Management - the source matters: confirm with blood lead level; for symptomatic toxicity or high levels use chelation (oral DMSA/succimer, or IV calcium-EDTA, with dimercaprol/BAL added in encephalopathy) - but the decisive orthopaedic point is that chelation gives only temporary control while the lead source remains, so the retained fragment (especially intra-articular) must be removed to achieve definitive cure.

Region-Specific Traps

Shoulder and elbow

Do Not Miss: Intra-articular fragments, nerve injury, vascular proximity.
Practical Point: CT helps locate fragments; arthroscopy may remove selected joint fragments.

Forearm

Do Not Miss: Compartment syndrome, nerve injury, unstable both-bone mechanics.
Practical Point: Assess median, ulnar, radial and AIN/PIN function before anaesthesia.

Hand

Do Not Miss: Tendon, nerve, vessel, joint and contamination in a small volume.
Practical Point: Low-calibre does not mean low-risk in the hand.

Pelvis and acetabulum

Do Not Miss: Bowel, rectal, bladder, urethral, vascular and intra-articular contamination.
Practical Point: Trajectory and visceral injury decide antibiotics and debridement.

Femur and tibia

Do Not Miss: Vascular injury, compartment syndrome, comminution, nonunion.
Practical Point: Treat fracture mechanically, but respect soft tissues and perfusion.

Foot and ankle

Do Not Miss: Contamination from shoe, small compartments, joint violation, retained fragments in sole.
Practical Point: Do not underestimate infection and compartment risk.

High-Yield Regional Problems
Region	Do Not Miss	Practical Point
Shoulder and elbow	Intra-articular fragments, nerve injury, vascular proximity.	CT helps locate fragments; arthroscopy may remove selected joint fragments.
Forearm	Compartment syndrome, nerve injury, unstable both-bone mechanics.	Assess median, ulnar, radial and AIN/PIN function before anaesthesia.
Hand	Tendon, nerve, vessel, joint and contamination in a small volume.	Low-calibre does not mean low-risk in the hand.
Pelvis and acetabulum	Bowel, rectal, bladder, urethral, vascular and intra-articular contamination.	Trajectory and visceral injury decide antibiotics and debridement.
Femur and tibia	Vascular injury, compartment syndrome, comminution, nonunion.	Treat fracture mechanically, but respect soft tissues and perfusion.
Foot and ankle	Contamination from shoe, small compartments, joint violation, retained fragments in sole.	Do not underestimate infection and compartment risk.

Six-panel figure after reconstruction of first metatarsal bone loss from a gunshot wound: three-dimensional CT with the plate rendered in blue, sagittal CT, two radiographs and two clinical follow-up photographs of the foot. — Reconstruction of segmental first-metatarsal loss after a foot gunshot injury, in six panels: (A) three-dimensional CT with the plate rendered in blue, (B) sagittal CT and (C, D) radiographs showing plate fixation and structural graft integration along the first metatarsal, and (E, F) the clinical result at follow-up. Region-specific planning must also preserve length, the medial column, plantar soft tissues and a shoe-compatible foot.Credit: Hadzic et al., Foot & Ankle Orthopaedics, CC BY 4.0, via Europe PMC (PMC13144619), Figure 4

Complications and Follow-Up

By time. Early complications are haemorrhage, vascular thrombosis, compartment syndrome, missed nerve injury, wound contamination and acute infection. In the intermediate period they are deep infection, fixation failure, delayed union, nonunion, stiffness, neuropathic pain and soft tissue breakdown. Late problems are lead arthropathy, systemic lead toxicity, chronic osteomyelitis, post-traumatic arthritis, malunion and complex regional pain.

Eight-panel figure, labelled a to h, showing an infected femoral gunshot fracture treated by debridement, external fixation, ring-frame bone transport and eventual union: radiographs, CT reconstructions and clinical photographs of the thigh. — Polymicrobial fracture-related infection after a high-energy femoral gunshot fracture, in eight panels: (a) a left femur (printed L marker) after radical debridement, with a large segmental defect spanned by external fixator pins; (b) the defect under a ring frame for bone transport; (c, d) CT reconstructions with the frame in place; (e) the frame on the thigh; (f, g) the united femur; and (h) the healed thigh. Infection control, viable soft-tissue coverage and mechanical reconstruction are separate problems that must each be solved.Credit: Kliushin et al., Journal of Bone and Joint Infection, CC BY 4.0, via Europe PMC (PMC13054848), Figure 1

Red flags after discharge. Patients should return urgently for:

Increasing pain out of proportion.
Increasing swelling or tight compartments.
Numbness, weakness or cold limb.
Fever, spreading redness, pus or foul odour.
New drainage after an initially dry wound.
Worsening joint pain when a fragment may be intra-articular.

Postoperative Care

Postoperative care depends on the wound and fixation, but the same priorities recur.

Neurovascular status

What to Do: Document pulses, Doppler signals, capillary refill, motor and sensory function after surgery.
Why: Detects vascular thrombosis, nerve deterioration and compartment syndrome.

Compartment surveillance

What to Do: Repeat examinations and measure pressures when examination is unreliable.
Why: Gunshot fractures with vascular injury or reperfusion remain high risk.

Wound plan

What to Do: Schedule dressing review, second look, delayed closure, graft or flap timing.
Why: Soft tissue failure is a major driver of infection and nonunion.

Antibiotics

What to Do: Stop prophylaxis when appropriate; continue targeted therapy only for established infection or high-risk contamination.
Why: Prevents unnecessary prolonged antibiotics while treating real infection.

Rehabilitation

What to Do: Begin joint motion when fixation and soft tissues allow.
Why: Stiffness is common after periarticular and upper-limb gunshot injuries.

Postoperative Priorities
Priority	What to Do	Why
Neurovascular status	Document pulses, Doppler signals, capillary refill, motor and sensory function after surgery.	Detects vascular thrombosis, nerve deterioration and compartment syndrome.
Compartment surveillance	Repeat examinations and measure pressures when examination is unreliable.	Gunshot fractures with vascular injury or reperfusion remain high risk.
Wound plan	Schedule dressing review, second look, delayed closure, graft or flap timing.	Soft tissue failure is a major driver of infection and nonunion.
Antibiotics	Stop prophylaxis when appropriate; continue targeted therapy only for established infection or high-risk contamination.	Prevents unnecessary prolonged antibiotics while treating real infection.
Rehabilitation	Begin joint motion when fixation and soft tissues allow.	Stiffness is common after periarticular and upper-limb gunshot injuries.

Follow-up. Recheck the wound within the timeframe appropriate for its contamination and surgery, early for high-risk, contaminated or surgically treated wounds, and keep compartment vigilance going while swelling evolves. Radiographs confirm alignment and progression to union. Review cultures and histology when debridement was performed and adjust antibiotics when infection is present. Counsel on smoking cessation, diabetes optimisation and the red flags above, keep retained intra-articular or symptomatic fragments under the surveillance described earlier, and involve hand therapy, splinting or physiotherapy when tendons, joints or nerves are involved.

Outcomes and Prognosis

Outcome depends more on tissue injury and associated structures than on the bullet itself.

What predicts a good result. A low-energy, extra-articular, clean wound with a stable fracture, normal neurovascular status and reliable follow-up.

What predicts a poor one. High-energy transfer, vascular injury, compartment syndrome, bone loss, joint injury, infection, smoking and poor soft tissue cover. State the prognostic factors clearly:

Energy and tissue devitalisation.
Time to antibiotics and debridement when contamination is significant.
Vascular injury and ischaemia duration.
Need for fasciotomy.
Joint surface injury.
Bone defect size and fixation stability.
Patient factors: smoking, diabetes, immunosuppression, nutrition and adherence.

What limits recovery. Nerve injury, stiffness, chronic infection, nonunion and post-traumatic arthritis may dominate function even after fracture union.

Common Pitfalls

Pitfalls That Change Outcome

Overtreatment

Chasing a deep asymptomatic extra-articular bullet can injure nerves, vessels and soft tissue without benefit.

Undertreatment

Missing joint violation, bowel contamination, vascular injury or compartment syndrome can be limb-threatening.

Wrong antibiotic logic

Low-energy evidence does not justify ignoring contamination, operative fixation, delayed infection or high-energy tissue loss.

Wrong closure

Closing high-energy or contaminated wounds before tissue viability is clear increases infection risk.

Guidelines, Registries & Global Practice

Global epidemiology and practice variation

The burden of ballistic limb trauma is extremely unevenly distributed. Civilian gunshot violence is concentrated in specific high-incidence regions — parts of the Americas and southern Africa carry a disproportionate share of orthopaedic ballistic workload, and centres such as the OrthoBallistics group in Cape Town manage volumes rarely seen elsewhere. By contrast, in the United Kingdom, much of Europe and Australasia, civilian gunshot injury is comparatively uncommon, so the largest published high-energy experience is military and is reported through defence trauma systems. This drives a real practice gap: a low-energy handgun fracture is the everyday lesion in high-incidence civilian settings, whereas blast and high-velocity rifle wounds dominate the military literature and shape much of the published surgical doctrine.

A recurring methodological problem, emphasised by the Cape Town group (Maqungo et al., Injury 2020, DOI), is that the field is scientifically under-represented: high loss to follow-up and poor compliance in affected populations make high-quality prospective evidence scarce, so most guidance rests on Level III to V data and expert consensus.

Side-by-side guideline and doctrine comparison

There is no single international gunshot-fracture guideline; instead, principles are drawn from open-fracture and trauma-system standards applied to the ballistic wound.

BOA / BAPRAS (BOAST – Open Fractures, UK)

Position Relevant to Gunshot Wounds: High-energy or contaminated ballistic wounds follow open-fracture standards: early antibiotics, senior orthoplastic assessment, debridement of devitalised tissue and combined skeletal-soft-tissue reconstruction; avoid premature closure.
Evidence Basis: National standard / consensus.

AAOS / OTA (USA)

Position Relevant to Gunshot Wounds: Stratify by energy: low-velocity extra-articular fractures may be treated like equivalent closed fractures; remove intra-articular bullets; reserve extensive debridement for high-energy or contaminated wounds.
Evidence Basis: Review-level, mostly Level III-IV.

AO Foundation / AO Trauma

Position Relevant to Gunshot Wounds: Apply standard fracture-fixation mechanics once contamination and soft tissues are controlled; favour temporary external fixation and staged care for severe contamination or poor soft-tissue envelope.
Evidence Basis: Educational consensus.

Defence / military trauma doctrine (e.g. UK RCDM, US Joint Trauma System)

Position Relevant to Gunshot Wounds: High-velocity and blast wounds: haemorrhage control first, never close primarily, repeated debridement and planned reconstruction; liberal damage-control and shunting.
Evidence Basis: Combat-casualty series.

WHO / ICRC (resource-limited and conflict settings)

Position Relevant to Gunshot Wounds: Wound excision, delayed primary closure and tetanus prophylaxis form the backbone where staged reconstruction and imaging may be limited.
Evidence Basis: Field experience / guidance.

How Major Bodies Frame Ballistic Limb Injury
Body / Source	Position Relevant to Gunshot Wounds	Evidence Basis
BOA / BAPRAS (BOAST – Open Fractures, UK)	High-energy or contaminated ballistic wounds follow open-fracture standards: early antibiotics, senior orthoplastic assessment, debridement of devitalised tissue and combined skeletal-soft-tissue reconstruction; avoid premature closure.	National standard / consensus.
AAOS / OTA (USA)	Stratify by energy: low-velocity extra-articular fractures may be treated like equivalent closed fractures; remove intra-articular bullets; reserve extensive debridement for high-energy or contaminated wounds.	Review-level, mostly Level III-IV.
AO Foundation / AO Trauma	Apply standard fracture-fixation mechanics once contamination and soft tissues are controlled; favour temporary external fixation and staged care for severe contamination or poor soft-tissue envelope.	Educational consensus.
Defence / military trauma doctrine (e.g. UK RCDM, US Joint Trauma System)	High-velocity and blast wounds: haemorrhage control first, never close primarily, repeated debridement and planned reconstruction; liberal damage-control and shunting.	Combat-casualty series.
WHO / ICRC (resource-limited and conflict settings)	Wound excision, delayed primary closure and tetanus prophylaxis form the backbone where staged reconstruction and imaging may be limited.	Field experience / guidance.

Registry and surveillance evidence

There is no dedicated international gunshot-fracture implant registry. Relevant population-level data instead come from national trauma registries and injury surveillance systems — for example the Australian and New Zealand trauma registries, the UK Trauma Audit and Research Network (TARN), and the US National Trauma Data Bank — which capture mechanism, injury severity and outcome but not bullet-specific decisions. Vascular-imaging practice has been validated in this registry-style way: an Australian major trauma centre series confirmed that CTA is the accurate first-line vascular study yet rarely changes management when no clinical signs are present (Joseph et al., Injury 2021, DOI).

Applying this locally (Australia)

Use a major trauma pathway for unstable patients and high-energy wounds, with early multidisciplinary involvement (orthopaedics, vascular surgery, plastic surgery, emergency medicine, intensive care, infectious diseases and rehabilitation).
Antibiotic choice should follow eTG antimicrobial guidance and the hospital open-fracture policy rather than a fixed international recipe; tetanus assessment is part of every penetrating wound plan.
Document neurovascular status, wound appearance, antibiotics, tetanus decision, splinting, imaging and serial compartment checks clearly.
For retained intra-articular, multiple or symptomatic fragments, or any lead-toxicity concern, coordinate blood lead surveillance with physicians, toxicology or infectious diseases according to local service availability.

Clinical Context

Clinical management should be based on injury severity, patient physiology, local trauma pathways and available specialist services, recognising that civilian and military ballistic patterns differ markedly between regions.

MCQ Practice Points

MCQ Trap 1

Q: Does every low-energy extra-articular gunshot fracture need wide operative debridement? A: No. Many can be treated like the equivalent fracture with local wound care and appropriate antibiotic/tetanus decisions.

MCQ Trap 2

Q: Which retained bullet fragments should be removed? A: Intra-articular, intra-bursal, infected, symptomatic, neurovascularly threatening or accessible fragments during planned surgery.

MCQ Trap 3

Q: What is the key determinant of tissue destruction? A: Energy transferred into the tissue, influenced by velocity, yaw, fragmentation, bone strike and tissue resistance.

MCQ Trap 4

Q: Why is fasciotomy considered after vascular repair? A: Ischaemia and reperfusion increase compartment syndrome risk, especially with fracture, swelling and prolonged ischaemia.

Applied Scenarios

Practise clinical reasoning and management decisions out loud

Viva scenarioStandard

Low-Energy Extra-Articular Tibial Fracture

Clinical prompt

“A stable adult has a small entry and exit wound, normal neurovascular examination and an extra-articular tibial shaft fracture after a handgun injury.”

Viva scenarioChallenging

Intra-Articular Knee Fragment

Clinical prompt

“A patient has a gunshot wound crossing the knee with a retained metallic fragment visible inside the joint.”

Viva scenarioCritical

High-Energy Contaminated Wound

Clinical prompt

“A patient has a comminuted femoral fracture with a large soft tissue defect, devitalised muscle and gross contamination after a high-energy projectile injury.”

Viva scenarioCritical

Vascular Injury With Fracture

Clinical prompt

“A patient with a gunshot fracture around the distal femur has an ischaemic foot and expanding popliteal fossa haematoma.”

Exam day cheat sheet

Gunshot Wounds and Ballistics: Decision Sheet

Start with

Primary survey and haemorrhage control.
Neurovascular status before anaesthesia.
Entry, exit, contamination, joint path and fracture stability.

Image

Orthogonal X-rays of limb and adjacent joints.
CT for joint, pelvis, complex fracture or fragment localisation.
CTA for hard or soft vascular signs, abnormal ABI/API or concerning trajectory.

Operate for

High-energy devitalised tissue.
Gross contamination, delayed infected wounds or bowel contamination.
Joint violation with retained intra-articular fragments.
Unstable fractures needing standard fixation.
Vascular injury or compartment syndrome.

Do not

Judge severity by skin wound size alone.
Chase deep asymptomatic extra-articular fragments.
Close high-energy contaminated wounds primarily.
Ignore compartment syndrome because pulses are present.

Evidence Base

Evidence

Management of Civilian Low-Velocity Gunshot Injuries to an Extremity

LoE 5

Jabara, Gannon, Vallier, Nguyen • J Bone Joint Surg Am (2021)

Key Findings:

Most low-velocity gunshot-induced extremity fractures can be managed similarly to equivalent non-gunshot fractures, with goals of restoring function and minimising complications.
Intra-articular retained bullets should be removed; routine prophylactic irrigation and debridement of a transarticular bullet track is not warranted purely for infection prevention.
Evidence supporting prophylactic antibiotics in non-operatively treated wounds is limited; most literature is Level III or IV.

Finding: Review

Clinical implication: Do not over-operate every low-energy extra-articular gunshot fracture, but do remove intra-articular fragments and escalate when tissue, contamination or perfusion demands it.

Limitation: A NARRATIVE REVIEW ARTICLE, NOT A COHORT OR TRIAL - it collates current practice for civilian low-velocity extremity gunshot injuries and reports no patients, no rates and no comparison of its own, so its recommendations carry the authority of consensus rather than of measurement. The core message that most low-velocity gunshot fractures can be treated like their closed equivalents is well founded and is the single most useful correction to older doctrine, but 'low velocity' is doing a great deal of work in that sentence and is not defined by a number anyone measures at the bedside - the wound, the fracture comminution and any fragmentation on the radiograph are the practical surrogates for energy transfer. The statement that routine irrigation and debridement of a transarticular bullet track is not warranted purely to prevent infection is a recommendation against a practice, which is weaker evidence than a demonstration that omitting it is safe. Nothing here addresses shotgun wounds, close-range injuries or rifle rounds.

Verify on PubMed (PMID 33755646)

Evidence

Gunshot Injuries to the Lower Extremities: Issues, Controversies and Algorithm of Management

LoE 5

Maqungo, Kauta, Held, et al. • Injury (2020)

Key Findings:

Proposes conservative management of soft-tissue-only wounds and of incomplete (non-displaced) tibial or femoral shaft fractures, with fixation of all complete fractures and prophylactic fixation of incomplete peritrochanteric fractures.
All intra-articular projectiles should be removed.
A joint should be treated as septic arthritis only when the missile traverses large bowel (not small bowel) before entering the joint capsule.
Evidence remains scarce and limited by high loss to follow-up in this population.

Finding: Current concepts review

Clinical implication: Use a structured pathway rather than a single rule for every gunshot wound; bowel-traversing trajectories that enter a joint warrant septic-arthritis-level treatment.

Limitation: A CURRENT-CONCEPTS REVIEW PROPOSING AN ALGORITHM, NOT A VALIDATION OF ONE - the algorithm has not been tested prospectively against usual care, and its most consequential branch, conservative management of incomplete (non-displaced) tibial or femoral shaft fractures, rests on observational experience rather than a comparative study. That branch also depends on a judgement about displacement made on initial radiographs, and an incomplete ballistic fracture can displace later. The authorship reflects a high-volume South African trauma environment where gunshot injury is common and expertise concentrated; unit familiarity, follow-up reliability and social circumstance all affect whether conservative management is safe, and none transfers automatically. No infection, nonunion or reoperation rates accompany the algorithm.

Verify on PubMed (PMID 32471684)

Reference Links

Jabara JT, Gannon NP, Vallier HA, Nguyen MP. Management of civilian low-velocity gunshot injuries to an extremity. PubMed
Maqungo S, Kauta N, Held M, et al. Gunshot injuries to the lower extremities: issues, controversies and algorithm of management. PubMed
Sathiyakumar V, Thakore RV, Stinner DJ, et al. Gunshot-induced fractures of the extremities: a review of antibiotic and debridement practices. PubMed
Papasoulis E, Patzakis MJ, Zalavras CG. Antibiotics in the treatment of low-velocity gunshot-induced fractures: a systematic literature review. PubMed
Penn-Barwell JG, Brown KV, Fries CA. High velocity gunshot injuries to the extremities: management on and off the battlefield. PubMed
Omid R, Stone MA, Zalavras CG, Marecek GS. Gunshot wounds to the upper extremity. PubMed
Sclafani SJ, Vuletin JC, Twersky J. Lead arthropathy: arthritis caused by retained intra-articular bullets. PubMed
deSouza IS, Benabbas R, McKee S, et al. Accuracy of physical examination, ankle-brachial index and ultrasonography in the diagnosis of arterial injury in penetrating extremity trauma: a systematic review and meta-analysis. PubMed
Joseph TI, Ratnakanthan PJ, Paul E, Clements W. Utility of computed tomography angiography in traumatic lower limb injury: review of clinical impact in a level 1 trauma centre. PubMed
Nickel WN, Steelman TJ, Sabath ZR, Potter BK. Extra-articular retained missiles: is surveillance of lead levels needed? PubMed

Energy-Based Classification

Pattern

Features

Treatment Meaning

Low-energy

Limited soft tissue injury, small wound track, often handgun-type civilian injury.

May be managed like equivalent fracture if extra-articular and clean.

High-energy

Large temporary cavity, devitalised tissue, bone fragmentation, blast or rifle-type transfer.

Formal debridement, staged care and soft tissue planning.

Shotgun

Variable; close-range injuries can be devastating with pellets, wad and broad contamination.

Treat by tissue destruction and contamination, not by the word shotgun alone.

Blast combined injury

Penetrating fragments plus crush, burns, contamination and systemic trauma.

Damage-control principles and repeated debridement are common.

Examination Checklist

Step

What to Document

Why It Matters

Look

Entry and exit wounds, soft tissue loss, contamination, swelling, deformity, expanding haematoma.

Defines wound energy and urgent vascular concern.

Feel

Compartments, bony tenderness, crepitus, temperature and capillary refill.

Tense compartments and cool limb change urgency.

Move

Active motor function before reduction or anaesthesia.

Baseline nerve function may be lost later if not recorded.

Nerves

Named motor and sensory testing relevant to the region.

Ballistic nerve injuries can be neuropraxia, partial laceration or complete transection.

Vessels

Pulses, Doppler signals, ABI/API, capillary refill and hard signs.

Determines CTA, exploration, shunt or repair.

Joints

Trajectory across joint, haemarthrosis, intra-articular air or fragment.

Changes removal and washout decisions.

Distinguishing the Limb-Threatening Diagnoses

Diagnosis

Discriminating Features

Key Test

First Action

Arterial injury / ischaemia

Hard signs as above, with a cool, pale ischaemic limb.

Examination plus ABI; CTA if signs equivocal.

Vascular surgery, haemorrhage control, shunt or repair with bone stabilisation.

Acute compartment syndrome

Pain out of proportion, pain on passive stretch, tense compartments, escalating analgesia; pulses often present.

Serial examination; compartment pressures if obtunded.

Urgent fasciotomy; do not wait for pulselessness.

Septic / contaminated joint

Trajectory across a joint, effusion, intra-articular gas or fragment, especially after a bowel-traversing path.

Imaging for joint violation; treat as septic arthritis if missile crossed large bowel.

Washout, fragment removal and joint-appropriate antibiotics.

Evolving deep infection

Delayed presentation, fever, spreading erythema, purulent or malodorous drainage.

Deep operative cultures (superficial swabs are inferior).

Debridement and targeted antibiotics.

Uncomplicated soft-tissue wound

Low-energy, extra-articular, normal perfusion, soft compartments, no contamination.

Clinical assessment and orthogonal radiographs.

Local wound care, tetanus and selective antibiotics; observe deep asymptomatic fragments.

High-Yield Regional Problems

Region

Do Not Miss

Practical Point

Shoulder and elbow

Intra-articular fragments, nerve injury, vascular proximity.

CT helps locate fragments; arthroscopy may remove selected joint fragments.

Forearm

Compartment syndrome, nerve injury, unstable both-bone mechanics.

Assess median, ulnar, radial and AIN/PIN function before anaesthesia.

Hand

Tendon, nerve, vessel, joint and contamination in a small volume.

Low-calibre does not mean low-risk in the hand.

Pelvis and acetabulum

Bowel, rectal, bladder, urethral, vascular and intra-articular contamination.

Trajectory and visceral injury decide antibiotics and debridement.

Femur and tibia

Vascular injury, compartment syndrome, comminution, nonunion.

Treat fracture mechanically, but respect soft tissues and perfusion.

Foot and ankle

Contamination from shoe, small compartments, joint violation, retained fragments in sole.

Do not underestimate infection and compartment risk.

Postoperative Priorities

Priority

What to Do

Why

Neurovascular status

Document pulses, Doppler signals, capillary refill, motor and sensory function after surgery.

Detects vascular thrombosis, nerve deterioration and compartment syndrome.

Compartment surveillance

Repeat examinations and measure pressures when examination is unreliable.

Gunshot fractures with vascular injury or reperfusion remain high risk.

Wound plan

Schedule dressing review, second look, delayed closure, graft or flap timing.

Soft tissue failure is a major driver of infection and nonunion.

Antibiotics

Stop prophylaxis when appropriate; continue targeted therapy only for established infection or high-risk contamination.

Prevents unnecessary prolonged antibiotics while treating real infection.

Rehabilitation

Begin joint motion when fixation and soft tissues allow.

Stiffness is common after periarticular and upper-limb gunshot injuries.

How Major Bodies Frame Ballistic Limb Injury

Body / Source

Position Relevant to Gunshot Wounds

Evidence Basis

BOA / BAPRAS (BOAST – Open Fractures, UK)

High-energy or contaminated ballistic wounds follow open-fracture standards: early antibiotics, senior orthoplastic assessment, debridement of devitalised tissue and combined skeletal-soft-tissue reconstruction; avoid premature closure.

National standard / consensus.

AAOS / OTA (USA)

Stratify by energy: low-velocity extra-articular fractures may be treated like equivalent closed fractures; remove intra-articular bullets; reserve extensive debridement for high-energy or contaminated wounds.

Review-level, mostly Level III-IV.

AO Foundation / AO Trauma

Apply standard fracture-fixation mechanics once contamination and soft tissues are controlled; favour temporary external fixation and staged care for severe contamination or poor soft-tissue envelope.

Educational consensus.

Defence / military trauma doctrine (e.g. UK RCDM, US Joint Trauma System)

High-velocity and blast wounds: haemorrhage control first, never close primarily, repeated debridement and planned reconstruction; liberal damage-control and shunting.

Combat-casualty series.

WHO / ICRC (resource-limited and conflict settings)

Wound excision, delayed primary closure and tetanus prophylaxis form the backbone where staged reconstruction and imaging may be limited.

Field experience / guidance.

Evidence

Management of Civilian Low-Velocity Gunshot Injuries to an Extremity

LoE 5

Jabara, Gannon, Vallier, Nguyen • J Bone Joint Surg Am (2021)

Key Findings:

Most low-velocity gunshot-induced extremity fractures can be managed similarly to equivalent non-gunshot fractures, with goals of restoring function and minimising complications.
Intra-articular retained bullets should be removed; routine prophylactic irrigation and debridement of a transarticular bullet track is not warranted purely for infection prevention.
Evidence supporting prophylactic antibiotics in non-operatively treated wounds is limited; most literature is Level III or IV.

Finding: Review

Clinical implication: Do not over-operate every low-energy extra-articular gunshot fracture, but do remove intra-articular fragments and escalate when tissue, contamination or perfusion demands it.

Verify on PubMed (PMID 33755646)

Evidence

Gunshot Injuries to the Lower Extremities: Issues, Controversies and Algorithm of Management

LoE 5

Maqungo, Kauta, Held, et al. • Injury (2020)

Key Findings:

Proposes conservative management of soft-tissue-only wounds and of incomplete (non-displaced) tibial or femoral shaft fractures, with fixation of all complete fractures and prophylactic fixation of incomplete peritrochanteric fractures.
All intra-articular projectiles should be removed.
A joint should be treated as septic arthritis only when the missile traverses large bowel (not small bowel) before entering the joint capsule.
Evidence remains scarce and limited by high loss to follow-up in this population.

Finding: Current concepts review

Clinical implication: Use a structured pathway rather than a single rule for every gunshot wound; bowel-traversing trajectories that enter a joint warrant septic-arthritis-level treatment.

Verify on PubMed (PMID 32471684)

Path	Clinical Concern	Action
Extra-articular soft tissue	Pain, wound contamination and possible retained fragment.	Local wound care; observe deep asymptomatic fragments.
Extra-articular fracture	Fracture stability, cortical violation and contamination.	Treat fracture according to standard mechanical principles.
Intra-articular	Cartilage injury, synovitis, lead arthropathy, loose body and infection concern.	Remove intra-articular fragment; wash out contaminated joint.
Transpelvic / bowel trajectory	Polymicrobial contamination, pelvic fracture, rectal or genitourinary injury.	Multidisciplinary trauma, antibiotics, contamination control and selective debridement.
Neurovascular corridor	Artery, vein or nerve injury may be occult initially.	Serial examination, CTA when indicated and specialist input.

Scenario	Reasonable Approach	Important Caveat
Low-energy soft tissue only	Local wound care; antibiotics vary by local protocol and patient risk.	Evidence does not support prolonged broad coverage for every minor wound.
Low-energy extra-articular fracture	Short course of a first-generation cephalosporin is commonly used.	Systematic review evidence has not proven benefit strongly, so avoid unnecessary prolonged therapy.
Operative fixation	Perioperative prophylaxis as for fracture surgery, adjusted for wound contamination.	Do not confuse prophylaxis with treatment of established infection.
High-energy, gross contamination or delayed wound	Broad open-fracture-style coverage based on contamination source.	Farm, water, bowel and soil contamination need organism-specific thinking.
Infected delayed presentation	Cultures, debridement and targeted antibiotics.	Superficial swabs are inferior to deep operative cultures.

Situation	Fixation Choice	Why
Stable fracture pattern	Splint, cast, brace or functional treatment if alignment and patient factors allow.	A bullet does not automatically mandate fixation.
Diaphyseal long bone fracture with acceptable soft tissues	Intramedullary nail or plate according to the bone and fracture pattern.	Use standard mechanics once contamination and soft tissues are controlled.
Severe contamination or poor soft tissue envelope	Temporary external fixation or staged fixation.	Allows access for debridement and soft tissue reconstruction.
Periarticular fracture	Anatomic joint reconstruction when feasible, often after CT planning.	Joint congruity, cartilage injury and retained fragments matter.
Vascular injury	Temporary stabilisation before repair or definitive stabilisation if rapid and safe.	The sequence is chosen with vascular surgery to protect repair and minimise ischaemia.
Bone loss	Staged reconstruction, grafting, bone transport, Masquelet technique or amputation discussion depending severity.	The defect must be planned, not ignored after initial fixation.

Path	Clinical Concern	Action
Extra-articular soft tissue	Pain, wound contamination and possible retained fragment.	Local wound care; observe deep asymptomatic fragments.
Extra-articular fracture	Fracture stability, cortical violation and contamination.	Treat fracture according to standard mechanical principles.
Intra-articular	Cartilage injury, synovitis, lead arthropathy, loose body and infection concern.	Remove intra-articular fragment; wash out contaminated joint.
Transpelvic / bowel trajectory	Polymicrobial contamination, pelvic fracture, rectal or genitourinary injury.	Multidisciplinary trauma, antibiotics, contamination control and selective debridement.
Neurovascular corridor	Artery, vein or nerve injury may be occult initially.	Serial examination, CTA when indicated and specialist input.

Scenario	Reasonable Approach	Important Caveat
Low-energy soft tissue only	Local wound care; antibiotics vary by local protocol and patient risk.	Evidence does not support prolonged broad coverage for every minor wound.
Low-energy extra-articular fracture	Short course of a first-generation cephalosporin is commonly used.	Systematic review evidence has not proven benefit strongly, so avoid unnecessary prolonged therapy.
Operative fixation	Perioperative prophylaxis as for fracture surgery, adjusted for wound contamination.	Do not confuse prophylaxis with treatment of established infection.
High-energy, gross contamination or delayed wound	Broad open-fracture-style coverage based on contamination source.	Farm, water, bowel and soil contamination need organism-specific thinking.
Infected delayed presentation	Cultures, debridement and targeted antibiotics.	Superficial swabs are inferior to deep operative cultures.