Back to Operative Surgery
Oncology

Amputation for Tumour (Forequarter, Hindquarter & Rotationplasty)

Surgical technique guide for amputation in musculoskeletal oncology - oncological principles, forequarter (Berger), hindquarter (external hemipelvectomy), transfemoral/transtibial amputation, and Van Nes rotationplasty

Core Procedure
advanced
By OrthoVellum Medical Education Team

Reviewed by OrthoVellum Editorial Team

Editorial maintenance, source checking, and correction workflow • Published by OrthoVellum Medical Education Team

Editorial boardMethodologyReview policyReport a correction
High-yield overview

Forequarter, hindquarter and rotationplasty for musculoskeletal malignancy when limb salvage is not possible | advanced

Surgical Imaging

Forequarter and hindquarter amputation levels
Girdle amputations: the forequarter (upper limb with scapula and clavicle) and the hindquarter / external hemipelvectomy (lower limb with half the pelvis) — for unsalvageable girdle tumours.Credit: AI-generated medical image · OrthoVellum
Tumour-dictated amputation level on MRI
The amputation level is dictated by tumour and skip-lesion extent on whole-bone MRI — cutting well proximal to all disease — not by conventional prosthetic levels.Credit: AI-generated medical image · OrthoVellum

Critical Principles, Danger Structures and Exam Traps

Oncology Dictates the Level

The trap: Choosing the amputation level by classic prosthetic landmarks (e.g. mid-thigh transfemoral) rather than by tumour extent.

The fix: Review whole-bone MRI for the proximal tumour edge AND skip lesions. The bone cut must be a defined distance proximal to disease with a tumour-free marrow margin confirmed on frozen section. A higher amputation is chosen if oncology demands it.

Biopsy Tract Contamination

Principle: Any prior biopsy tract is considered contaminated and MUST be excised en bloc within the amputation specimen.

The fix: A poorly planned biopsy (wrong plane, transverse incision, off the definitive surgical axis) can force a higher amputation. The biopsy should always be performed by, or in discussion with, the operating sarcoma unit.

Flap Planning Around Tumour

Principle: Standard amputation flaps may pass through tumour-bearing or contaminated tissue.

The fix: Use atypical flaps fashioned from uninvolved tissue (e.g. posterior or fillet flaps). Oncological clearance takes priority over the textbook flap - viability and coverage are then solved with the tissue that remains.

Forequarter Vascular Control

Danger: The subclavian/axillary vessels and brachial plexus are ligated and divided at the root of the neck during forequarter amputation - uncontrolled retraction of a divided subclavian vessel into the chest is catastrophic.

The fix: Gain proximal vascular control of the subclavian vessels first (supraclavicular approach), ligate securely with transfixion sutures before division.

Hindquarter Haemorrhage

Danger: External hemipelvectomy divides the common/internal iliac vessels - massive blood loss is expected. The ureter, bladder, rectum and iliac vessels are all at risk.

The fix: Proximal control of the common iliac artery and vein before division, identify and protect the ureter, cross-match generously and anticipate large-volume transfusion.

Margin vs Function Confusion

The trap: Believing amputation guarantees a better margin or cure than limb salvage.

Reality: With modern chemotherapy and wide local excision, limb salvage gives equivalent survival and local control in suitable tumours. Amputation is chosen when salvage CANNOT achieve a wide margin or an acceptable limb - not to improve survival.

Mnemonic

A.M.P.U.T.A.T.EAMPUTATE — Indications for Amputation in Tumour

Mnemonic

M.A.R.G.I.N.SMARGINS — Oncological Amputation Principles

The Shift to Limb Salvage

Historically amputation was the primary treatment for extremity sarcoma. Following the landmark work of Rosen and the introduction of neoadjuvant chemotherapy, plus the limb-salvage comparison studies of the 1980s, limb salvage has become the standard of care.

  • Limb salvage is now performed in roughly 85 to 90 percent of extremity sarcomas
  • Amputation is required in only about 5 to 10 percent of cases
  • Survival is equivalent between amputation and limb salvage when a wide margin is achievable - amputation does NOT improve cure rates
  • Local recurrence rates are slightly higher with limb salvage than amputation, but with no survival penalty when recurrence is detected and managed early

Clinical Pearl

Examiner framing: 'Amputation for tumour is a decision about local control and function, not about survival. I would never tell a patient that an amputation gives them a better chance of cure than a properly executed limb salvage with a wide margin.'

Indications for Amputation

Tumour-Related Indications

  • Major neurovascular encasement - tumour circumferentially involving the main artery, vein and nerve such that a wide margin cannot be achieved without sacrificing limb viability or function
  • Extensive joint or multi-compartment involvement - disease crossing fascial planes into several compartments or into a joint
  • Large recurrent tumour - particularly after previous surgery and radiotherapy where re-excision margins are inadequate
  • Fungating or infected tumour - for local control, hygiene and palliation of symptoms
  • Pathological fracture - when the fracture haematoma contaminates compartments beyond the resectable field

Limb-Related and Patient-Related Indications

  • Failed limb salvage - chronic deep infection of a megaprosthesis, failed reconstruction, non-functional salvaged limb
  • Distal tumours where salvage is non-functional - reconstruction would leave a limb worse than a well-fitted prosthesis
  • Informed patient preference - some patients choose a single definitive procedure over prolonged, multi-operation salvage

Palliation

  • Amputation may be palliative in advanced disease for a fungating, painful or haemorrhaging tumour, even in the presence of metastases, to improve quality of life

Oncological Principles of the Amputation

  • Plan from staging imaging - whole-bone MRI defines the proximal tumour edge and detects skip lesions (discontinuous intramedullary deposits). A bone cut must be made a safe distance proximal to all disease
  • Wide margin - a continuous cuff of normal tissue around the tumour in every plane, including the bone marrow margin
  • Marrow margin confirmation - frozen section of the divided bone end confirms tumour-free marrow before closure
  • Excise the biopsy tract - the tract is contaminated and must be removed en bloc within the specimen
  • MDT and neoadjuvant therapy - decisions are made within the sarcoma MDT; chemotherapy and radiotherapy status influence timing, flap choice and wound healing

Amputation vs Limb Salvage — Decision Framework


Clinical Decision Scenarios

Use these scenarios to practise clinical reasoning and management decisions

CLINICAL SCENARIOAdvanced

CLINICAL PROMPT

"A 16-year-old presents with a high-grade osteosarcoma of the distal femur. Imaging shows the tumour encasing the popliteal vessels and extending across multiple compartments, with a skip lesion in the proximal femoral diaphysis. The family asks whether amputation will give a better chance of cure than limb salvage. How do you counsel and manage?"

PRACTICAL APPROACH
I would first make clear that the choice between amputation and limb salvage is about achieving local control and the best function - it is NOT a decision that changes survival. With adequate neoadjuvant chemotherapy and a wide margin, survival is equivalent whether the tumour is treated by amputation or by limb salvage. **Why salvage is not appropriate here**: This tumour encases the popliteal neurovascular bundle and crosses multiple compartments, and there is a proximal skip lesion. A wide margin cannot be achieved while preserving a viable, functional limb, and the skip lesion mandates a bone cut well proximal to the obvious tumour. This makes amputation (or a very proximal resection) the oncologically sound choice. **Defining the level**: The whole-bone MRI is critical - I would set the bone cut proximal to the skip lesion with a tumour-free marrow margin confirmed on frozen section. The biopsy tract is excised en bloc. **The rotationplasty discussion**: In a young patient, I would specifically discuss Van Nes rotationplasty as an alternative to a high transfemoral amputation. It would give a durable, active, sensate below-knee-equivalent limb, grows with the patient, and has no implant to revise. The trade-off is the cosmetic appearance of a backward-facing foot - I would arrange counselling and, if possible, contact with a prior rotationplasty patient and family. **Decision process**: All of this is taken to the sarcoma MDT and the final plan is shared decision-making with the patient and family, set against their values and activity goals.
CLINICAL SCENARIOAdvanced

CLINICAL PROMPT

"You are planning a hindquarter amputation (external hemipelvectomy) for a large recurrent pelvic chondrosarcoma. What are the principal intra-operative dangers and how do you mitigate them?"

PRACTICAL APPROACH
A hindquarter amputation removes the entire lower limb together with the hemipelvis and is one of the highest-risk procedures in orthopaedic oncology. I would plan it as a joint case with vascular, general and urological input. **Haemorrhage**: This is the dominant risk - the procedure divides the common or internal iliac vessels. I gain proximal control of the common iliac artery and vein through the anterior approach and ligate them with transfixion sutures BEFORE division. I cross-match generously, use cell salvage and large-bore access, and keep close communication with anaesthesia. **Ureter**: I identify and protect the ureter early in the anterior dissection - it is at risk as it crosses the iliac vessels and runs to the bladder. **Bladder and rectum**: During the medial dissection at the pubic symphysis and pelvic floor, the bladder and rectum are at risk - careful sharp dissection under direct vision, with urology and colorectal support if disease is close. **Oncological clearance**: The biopsy tract is excised en bloc, the resection is planned from cross-sectional imaging, and for recurrent and previously irradiated disease I plan flaps from uninvolved, non-irradiated tissue - typically a posterior gluteal myocutaneous flap, or an anterior thigh fillet flap if the posterior compartment is involved. **Closure and aftercare**: Large dead space means generous drainage and a high seroma and infection risk, which I manage with meticulous haemostasis, drains and perioperative antibiotics. Postoperatively I anticipate significant rehabilitation needs and counsel that many hindquarter patients become primarily wheelchair-dependent given the very high energy cost of prosthetic walking at this level.
CLINICAL SCENARIOAdvanced

CLINICAL PROMPT

"A patient who had a transfemoral amputation for soft tissue sarcoma 18 months ago presents with severe phantom limb pain and a tender stump nodule with a positive Tinel sign. How do you assess and manage this?"

PRACTICAL APPROACH
This patient has two related problems to separate: phantom limb pain and a likely symptomatic stump neuroma - and I must also exclude local recurrence. **Exclude recurrence first**: A new tender stump nodule after a sarcoma amputation must be investigated for local recurrence before being assumed benign. I would examine the stump, image it (ultrasound and/or MRI), and discuss at the sarcoma MDT. A neuroma typically shows a fusiform swelling in continuity with a divided nerve with a positive Tinel sign, but imaging and, if any doubt, biopsy distinguish neuroma from recurrent tumour. **Phantom limb pain**: This is very common after amputation. Management is multimodal: optimise analgesia with neuropathic agents (gabapentinoids, amitriptyline or duloxetine), involve the chronic pain team, and use non-pharmacological measures such as mirror therapy, desensitisation and graded motor imagery. Good perioperative and pre-emptive analgesia reduces incidence and is something I would emphasise in future cases. **Symptomatic neuroma**: If a discrete painful neuroma is confirmed and conservative measures (desensitisation, injection) fail, surgical options include revision with traction neurectomy and burying the nerve end in muscle, or modern techniques such as targeted muscle reinnervation (TMR) or regenerative peripheral nerve interface (RPNI), which have good evidence for reducing both neuroma and phantom pain. **Holistic care**: I would also address prosthetic fit (a poorly fitting socket aggravates stump pain), psychological support, and ensure the patient remains in structured oncological survivorship follow-up.

Amputation for Tumour — Exam Day Summary

Clinical summary

Key Evidence

Chemotherapy, en bloc resection and prosthetic bone replacement in the treatment of osteogenic sarcoma

Level IV
Rosen G, Murphy ML, Huvos AG, Gutierrez M, Marcove RC • Cancer
Clinical Implication: The conceptual foundation for modern limb salvage: chemotherapy plus wide margin can replace primary amputation, so amputation is now reserved for cases where a wide margin and useful limb cannot otherwise be achieved.
Verify on PubMed (PMID 1082364)

Limb-salvage treatment versus amputation for osteosarcoma of the distal end of the femur

Level III
Simon MA, Aschliman MA, Thomas N, Mankin HJ • J Bone Joint Surg Am
Clinical Implication: Landmark evidence that limb salvage does NOT shorten the disease-free interval or compromise survival compared with amputation - amputation is a local-control and function decision, not a cure-rate decision.
Verify on PubMed (PMID 3465732)

Resection and reconstruction for primary neoplasms involving the innominate bone

Level IV
Enneking WF, Dunham WK • J Bone Joint Surg Am
Clinical Implication: Origin of the Enneking pelvic classification; emphasises that internal hemipelvectomy can replace hindquarter amputation only when a wide margin is truly achievable - inadequate margins from a poor biopsy lead to near-universal recurrence.
Verify on PubMed (PMID 701308)

Rotationplasty

Level IV
Winkelmann WW • Orthop Clin North Am
Clinical Implication: The reference description of rotationplasty types and technique - supports rotationplasty as the preferred limb-preserving option for distal femoral sarcoma in the skeletally immature child.
Verify on PubMed (PMID 8649733)

Hindquarter amputation: is it still needed and what are the outcomes?

Level IV
Grimer RJ, Chandrasekar CR, Carter SR, Abudu A, Tillman RM, Jeys L • Bone Joint J
Clinical Implication: Quantifies the high morbidity, modest survival and low prosthetic use of hindquarter amputation - reinforces careful selection, multidisciplinary planning and realistic counselling that many patients become primarily wheelchair-dependent.
Verify on PubMed (PMID 23307686)

Osteosarcoma of the proximal humerus: long-term results with limb-sparing surgery

Level IV
Wittig JC, Bickels J, Kellar-Graney KL, Kim FH, Malawer MM • Clin Orthop Relat Res
Clinical Implication: Demonstrates that high-grade proximal humeral osteosarcoma can usually be managed by limb-sparing resection with excellent local control - forequarter amputation is reserved for tumours that encase the neurovascular bundle or cannot be cleared.
Verify on PubMed (PMID 11953608)

Targeted muscle reinnervation treats neuroma and phantom pain in major limb amputees: a randomized clinical trial

Level I
Dumanian GA, Potter BK, Mioton LM, et al. • Ann Surg
Clinical Implication: Best-level evidence that TMR outperforms conventional traction neurectomy for post-amputation pain - consider TMR (or RPNI) at the index amputation and for refractory symptomatic neuroma.
Verify on PubMed (PMID 30371518)

References

  1. Rosen G, Murphy ML, Huvos AG, Gutierrez M, Marcove RC (1976). Chemotherapy, en bloc resection, and prosthetic bone replacement in the treatment of osteogenic sarcoma. Cancer. PMID 1082364. — Foundational work establishing neoadjuvant chemotherapy and limb salvage in osteosarcoma.

  2. Simon MA, Aschliman MA, Thomas N, Mankin HJ (1986). Limb-salvage treatment versus amputation for osteosarcoma of the distal end of the femur. J Bone Joint Surg Am. PMID 3465732. — Landmark comparison showing no survival disadvantage of limb salvage over amputation.

  3. Enneking WF, Dunham WK (1978). Resection and reconstruction for primary neoplasms involving the innominate bone. J Bone Joint Surg Am. PMID 701308. — Basis of the internal hemipelvectomy / pelvic resection classification.

  4. Winkelmann WW (1996). Rotationplasty. Orthop Clin North Am. PMID 8649733. — Comprehensive description of rotationplasty types, technique and functional outcomes.

  5. Grimer RJ, Chandrasekar CR, Carter SR, et al. (2013). Hindquarter amputation: is it still needed and what are the outcomes? Bone Joint J. PMID 23307686. — Modern series on indications, complications and survival after hindquarter amputation.

  6. Wittig JC, Bickels J, Kellar-Graney KL, Kim FH, Malawer MM (2002). Osteosarcoma of the proximal humerus: long-term results with limb-sparing surgery. Clin Orthop Relat Res. PMID 11953608. — Limb-sparing shoulder-girdle resection outcomes (alternative to forequarter amputation).

  7. Ackman J, Altiok H, Flanagan A, et al. (2013). Long-term follow-up of Van Nes rotationplasty in patients with congenital proximal focal femoral deficiency. Bone Joint J. PMID 23365028. — Long-term (mean 21.5 years) function and quality-of-life data after rotationplasty.

  8. Dumanian GA, Potter BK, Mioton LM, et al. (2019). Targeted muscle reinnervation treats neuroma and phantom pain in major limb amputees: a randomized clinical trial. Ann Surg. PMID 30371518. — First surgical RCT showing TMR reduces phantom limb pain after amputation.