High-yield overview

Lateral Hip Pain | Gluteal Tendinopathy | Not Just Bursitis

10-25%Prevalence in middle-aged population

F:M 4:1Female predominance

40-60Peak age range (years)

90%Have gluteal tendinopathy not just bursitis

PATHOLOGY SPECTRUM

Gluteal Tendinopathy

PatternMost common cause - gluteus medius/minimus degeneration

TreatmentPhysiotherapy, load modification, PRP

Trochanteric Bursitis

PatternIsolated in less than 10% - usually secondary to tendinopathy

TreatmentActivity modification, NSAIDs, injection

Gluteal Tears

PatternPartial or full thickness - rotator cuff of the hip

TreatmentPhysiotherapy vs surgical repair

Critical Must-Knows

Not just bursitis - 90% have gluteal tendinopathy; isolated bursitis is rare (less than 10%)
Rotator cuff of the hip - gluteus medius/minimus tears analogous to shoulder pathology
Lateral hip pain with side-lying - distinguishes from hip OA (groin pain) and lumbar radiculopathy
Trendelenburg gait/test - key examination finding indicating gluteal dysfunction
Load modification essential - crossing legs, stairs, sleeping on side all provocative

Clinical Pearls

"
Point tenderness over greater trochanter with normal hip ROM suggests GTPS
"
Single leg stance for 30 seconds reproduces lateral hip pain
"
MRI shows tendinopathy in 90% but bursitis alone in less than 10%
"
Female predominance due to wider pelvis increasing ITB tensile strain

Clinical Imaging

Imaging Gallery

Critical GTPS Exam Points

Not Just Bursitis

Modern understanding: GTPS is primarily gluteal tendinopathy. Studies show 90% have tendon pathology while isolated bursitis occurs in less than 10%. Term "trochanteric bursitis" is outdated - use GTPS.

Clinical Diagnosis

Point tenderness over GT with reproduced pain on single leg stance. Normal hip ROM distinguishes from OA. Lateral hip pain (not groin) distinguishes from intra-articular pathology.

Provocative Positions

Load and compression provoke: side-lying on affected hip, crossing legs, stairs (especially down), prolonged standing, single leg activities. Sleep disturbance from lying on affected side is characteristic.

Female Predominance

4:1 female to male ratio due to wider female pelvis creating increased tensile strain on ITB and compressive load on gluteal tendons at greater trochanter insertion.

At a Glance

Greater trochanteric pain syndrome (GTPS) is primarily caused by gluteal tendinopathy—not bursitis as historically believed. Studies show 90% have tendon pathology while isolated bursitis occurs in less than 10%. GTPS is the "rotator cuff of the hip" with gluteus medius/minimus tears analogous to shoulder pathology. Patients present with lateral hip pain (distinct from groin pain of hip OA) worse when side-lying and during single-leg activities (stairs, standing). There is a 4:1 female predominance due to wider pelvis creating increased ITB tensile strain and compressive load on gluteal tendon insertions. Point tenderness over the greater trochanter with normal hip ROM is key. Trendelenburg test assesses abductor function. Load modification is essential—avoid crossing legs, prolonged standing, and sleeping on the affected side.

Mnemonic

FLAMEGTPS Risk Factors - FLAME

F	Female gender 4:1 ratio due to wider pelvis biomechanics
L	Low back pathology Lumbar spine disease associated in 20-35%
A	Age 40-60 years Peak incidence - degenerative tendinopathy
M	Metabolic factors Obesity, diabetes, hypothyroidism
E	Exercise changes Sudden increase in load, running, stairs

F	Female gender 4:1 ratio due to wider pelvis biomechanics	M	Metabolic factors Obesity, diabetes, hypothyroidism
L	Low back pathology Lumbar spine disease associated in 20-35%	E	Exercise changes Sudden increase in load, running, stairs
A	Age 40-60 years Peak incidence - degenerative tendinopathy

Hook:FLAME - lateral hip pain that burns like a FLAME!

Mnemonic

STEPSGTPS Examination - STEPS

S	Single leg stance 30 seconds reproduces lateral hip pain
T	Trendelenburg test Positive indicates abductor weakness
E	External rotation strength Test in prone - often weak
P	Palpation over GT Point tenderness over greater trochanter
S	Side-lying provokes Pain lying on affected side

S	Single leg stance 30 seconds reproduces lateral hip pain	P	Palpation over GT Point tenderness over greater trochanter
T	Trendelenburg test Positive indicates abductor weakness	S	Side-lying provokes Pain lying on affected side
E	External rotation strength Test in prone - often weak

Hook:Take STEPS to examine GTPS - systematic approach to lateral hip pain

Mnemonic

MSALGluteal Tendon Insertions - MSAL

M	Medius to Lateral facet Main insertion on lateral facet of GT
S	Superoposterior facet Gluteus medius also inserts here
A	Anterior facet Gluteus minimus primary insertion
L	Lies deep to ITB Tendons lie deep to iliotibial band

M	Medius to Lateral facet Main insertion on lateral facet of GT	A	Anterior facet Gluteus minimus primary insertion
S	Superoposterior facet Gluteus medius also inserts here	L	Lies deep to ITB Tendons lie deep to iliotibial band

Hook:MSAL - Medius Superoposterior And Lateral, minimus Anterior - Like the shoulder cuff insertions

Overview and Epidemiology

Greater trochanteric pain syndrome (GTPS) is a clinical diagnosis characterized by lateral hip pain and tenderness over the greater trochanter. It is one of the most common causes of hip pain in primary care. The term "trochanteric bursitis" is now considered outdated as modern imaging studies demonstrate that the majority of patients have gluteal tendinopathy rather than primary bursitis. [1,2]

Demographics:

Peak incidence in 40-60 year age group
Marked female predominance (4:1 ratio)
Prevalence of 10-25% in middle-aged population
Common in runners and individuals with sedentary occupations
Bilateral in 25-30% of cases

Modern Understanding: The concept of GTPS has evolved significantly. In the landmark ultrasound prevalence study by Long et al. (AJR 2013) of 877 patients with GTPS:

49.9% had gluteal tendinosis
20.2% had trochanteric bursitis (nearly 80% had NO bursitis)
28.5% had a thickened iliotibial band
Only 0.5% had a frank gluteal tendon tear [1]

This has led to GTPS being called the "rotator cuff of the hip" as gluteal tendon pathology mirrors shoulder rotator cuff disease.

Not Just Bursitis

When asked about trochanteric bursitis in an exam, emphasize the modern understanding: GTPS is primarily gluteal tendinopathy. Isolated bursitis occurs in less than 10% of cases. The pathology is analogous to the shoulder rotator cuff - the gluteus medius and minimus are the abductor "cuff" of the hip.

Risk Factors:

Female gender (wider pelvis, increased Q angle)
Age 40-60 years
Obesity (BMI greater than 25)
Low back pathology (20-35% association)
Lower limb OA (ipsilateral knee or hip)
Leg length discrepancy
Running (especially sudden increase in mileage)
Sedentary occupation with prolonged sitting

Pathophysiology and Anatomy

Greater Trochanter Anatomy

The greater trochanter (GT) has three distinct facets that serve as insertion sites for the gluteal tendons:

Greater Trochanter Facets and Insertions

Facet	Location	Tendon Insertion	Clinical Significance
Anterior facet	Most anterior aspect	Gluteus minimus	First to tear, difficult to visualize
Lateral facet	Lateral prominence	Gluteus medius (main)	Most common site of tendinopathy
Superoposterior facet	Superior-posterior	Gluteus medius (secondary)	Extension tears may involve this

Gluteal Tendons - Hip Abductor Complex

The gluteus medius and minimus form the hip abductor mechanism and are analogous to the rotator cuff of the shoulder:

Gluteus Medius:

Origin: External surface of ilium between anterior and posterior gluteal lines
Insertion: Lateral and superoposterior facets of greater trochanter
Innervation: Superior gluteal nerve (L4-S1)
Function: Primary hip abductor, stabilizes pelvis during single leg stance

Gluteus Minimus:

Origin: External surface of ilium between anterior and inferior gluteal lines
Insertion: Anterior facet of greater trochanter
Innervation: Superior gluteal nerve (L4-S1)
Function: Hip abduction, internal rotation, pelvic stabilization

Rotator Cuff of the Hip

The gluteus medius and minimus are called the rotator cuff of the hip. Like the supraspinatus in the shoulder, the gluteus medius is most commonly affected. Tears follow a similar pattern - starting as partial thickness undersurface tears and progressing to full thickness with retraction and fatty infiltration.

Peritrochanteric Bursae

Three bursae surround the greater trochanter:

Subgluteus maximus bursa - largest, between gluteus maximus and GT
Subgluteus medius bursa - between gluteus medius tendon and GT
Subgluteus minimus bursa - between gluteus minimus tendon and anterior facet

These bursae may become inflamed secondary to tendinopathy, direct compression, or friction from the overlying iliotibial band.

Pathophysiology of Tendinopathy

GTPS develops through a combination of:

Tensile overload:

Repetitive hip abduction loading
Running, stair climbing, single leg activities
Sudden increase in activity level

Compressive load:

ITB compression against GT during hip adduction
Side-lying sleeping (direct compression)
Crossing legs (hip adduction and internal rotation)

Biomechanical factors:

Wider female pelvis increases ITB tension
Increased Q angle in females
Valgus knee alignment
Leg length discrepancy

The combination of tensile and compressive forces leads to tendon degeneration, similar to rotator cuff tendinopathy in the shoulder.

Clinical Presentation

History

Pain Characteristics:

Location: Lateral hip over greater trochanter
Radiation: May radiate down lateral thigh to knee (not below knee)
Character: Aching, burning, sometimes sharp
Onset: Usually gradual, may follow increase in activity
Night pain: Characteristic - unable to sleep on affected side

Side-Lying Pain

Difficulty sleeping on the affected side is a hallmark of GTPS. Patients often report waking at night when they roll onto the affected hip. This distinguishes GTPS from hip OA (which causes groin pain and start-up stiffness) and lumbar radiculopathy (which causes symptoms below the knee).

Aggravating Factors:

Lying on affected side
Crossing legs
Prolonged sitting (especially on hard surfaces)
Climbing stairs (especially descending)
Standing from seated position
Single leg activities (putting on shoes/socks)
Walking - especially uphill or on uneven ground

Associated Symptoms:

Feeling of hip weakness or giving way
Difficulty with single leg activities
Stiffness after prolonged sitting
Limp or Trendelenburg gait

Examination

Inspection:

Gait assessment - look for Trendelenburg gait
Standing posture - note pelvic obliquity
Muscle wasting of gluteal region (chronic cases)

Palpation:

Point tenderness over greater trochanter
Tenderness at insertion of gluteus medius (posterosuperior GT)
Tenderness at gluteus minimus insertion (anterior GT)
No tenderness in groin (distinguishes from hip OA)

Range of Motion:

Hip ROM typically full and painless (distinguishes from OA)
Pain at end-range hip adduction (compresses tendons)
Pain at end-range hip internal rotation with flexion

Special Tests:

Clinical Tests for GTPS

Test	Technique	Positive Finding	Sensitivity
Single leg stance (30s)	Stand on affected leg for 30 seconds	Reproduces lateral hip pain	100%
Trendelenburg test	Stand on affected leg, observe pelvis	Contralateral pelvis drops	73%
FABER test	Flexion-abduction-external rotation	Lateral hip pain (not groin)	82%
Resisted hip abduction	Side-lying, resist abduction	Pain and/or weakness	Variable
Side-lying provocation	Lie on affected side	Reproduces lateral hip pain	High

Red Flags

Exclude Serious Pathology

The following features warrant further investigation:

Night pain unrelated to position (may indicate tumor)
Rest pain unrelieved by avoiding compression
Systemic symptoms (weight loss, fever)
History of malignancy
Groin pain (suggests intra-articular hip pathology)
Pain below the knee (suggests lumbar radiculopathy)

Differential Diagnosis

Differential Diagnosis of Lateral Hip Pain

Condition	Pain Location	Key Distinguishing Features
GTPS	Lateral hip over GT	Point tenderness GT, normal ROM, side-lying pain
Hip OA	Groin (C-sign)	Reduced ROM, crepitus, start-up stiffness, X-ray changes
Lumbar radiculopathy	Lateral thigh to below knee	Back pain, dermatomal distribution, neurological signs
External snapping hip	Lateral hip, audible snap	Palpable/visible snap with hip flexion, usually painless
Meralgia paraesthetica	Anterolateral thigh	Sensory symptoms, no motor weakness, LFCN territory
Stress fracture (femoral neck)	Groin, lateral hip	Activity-related, worse with weight bearing, high index of suspicion

The C-Sign

Hip OA typically presents with groin pain. Patients demonstrate the "C-sign" - cupping the hand around the hip with thumb posteriorly and fingers anteriorly in the groin. GTPS patients point directly to the lateral hip. This is a key distinguishing feature in the exam setting.

Investigations

GTPS is primarily a clinical diagnosis. Investigations are used to exclude other pathology and confirm the diagnosis in unclear or recalcitrant cases.

Imaging

Plain Radiographs:

AP pelvis and lateral hip views
Usually normal in GTPS
May show calcification at GT insertion (calcific tendinopathy)
Excludes hip OA, avascular necrosis, stress fracture

Ultrasound:

First-line imaging for GTPS
Shows tendon thickening, hypoechoic changes, tears
Bursal fluid collection (greater than 2mm)
Can assess for ITB pathology
Useful for guiding injection

MRI:

Gold standard for soft tissue assessment
Shows tendinopathy (increased T2 signal)
Demonstrates partial and full-thickness tears
Assesses muscle quality (fatty infiltration)
91% accuracy in diagnosing abductor tears (Cvitanic 2004) [4]

MRI Grading of Gluteal Tendinopathy

Grade	MRI Findings	Management Implication
Grade 1	Bursitis with minimal tendon changes	Conservative - physio, activity modification
Grade 2	Tendinopathy - increased T1 signal	Conservative - physio, may consider injection
Grade 3	Partial thickness tear	Prolonged conservative trial, PRP consideration
Grade 4	Full thickness tear without retraction	Consider surgical repair if conservative fails
Grade 5	Complete tear with retraction, fatty atrophy	Surgical repair vs reconstruction

MRI Accuracy

MRI is 91% accurate for diagnosing gluteal tendon tears (Cvitanic 2004). The single most useful sign is a focus of T2 hyperintensity superior to the greater trochanter (sensitivity 73%, specificity 95%). Other findings include disruption of tendon continuity, tendon elongation, and in chronic cases fatty infiltration of gluteal muscles - directly analogous to rotator cuff assessment.

Laboratory Tests

Not routinely required. Consider in atypical presentations:

ESR, CRP - if infection or inflammatory arthritis suspected
Rheumatoid factor - if inflammatory arthritis suspected
HbA1c - screen for diabetes in recurrent cases

Management

Management follows a stepwise approach with conservative measures as first-line. Surgical intervention is reserved for recalcitrant cases or significant tears. [5,6]

Conservative Management

Patient education about pathology and prognosis
Avoid sleeping on affected side (pillow between knees)
Avoid crossing legs
Limit stair climbing (use handrail, lead with unaffected leg)
Activity modification - reduce running, single leg loading
Weight loss if BMI greater than 25

Gluteal strengthening (isometric progressing to isotonic)
Hip abductor exercises (non-provocative positions)
Core stability and lumbar spine assessment
Gait retraining
ITB stretching (controversial - may increase compression)
Graduated return to activity

NSAIDs (topical or oral) for 2-4 weeks
Corticosteroid injection if failing conservative at 6-8 weeks
Shockwave therapy (ESWT) - moderate evidence
PRP injection - emerging evidence for tendinopathy

Physiotherapy Focus:

The exercise programme should avoid provocative positions (hip adduction, compression) initially:

Exercise Progression for GTPS

Phase	Exercises	Key Points
Initial (0-2 weeks)	Isometric hip abduction in neutral	Pain-free range, avoid compression
Early (2-6 weeks)	Bridging, clamshells, side-lying abduction	Progress load gradually, monitor symptoms
Intermediate (6-12 weeks)	Standing hip abduction, step-ups	Single leg loading with good control
Advanced (12+ weeks)	Running, stairs, sport-specific	Full return to activity

Injection Therapy

Indications:

Failed conservative management at 6-8 weeks
Significant bursitis on imaging
Severe pain limiting rehabilitation

Technique:

Patient lateral with affected side up
Identify point of maximum tenderness over GT
Clean skin with antiseptic
Insert needle perpendicular until bone contacted
Withdraw 2-3mm and inject 1ml corticosteroid + 2-3ml local anaesthetic
Target subgluteus maximus bursa

Outcomes:

Short-term relief in 60-75%
Effect diminishes at 3-6 months
No evidence of long-term benefit vs placebo [7]
Risk of tendon weakening with repeated injections

Corticosteroid injection provides short-term relief but should be combined with physiotherapy rehabilitation for sustained benefit. Maximum of 3 injections recommended due to risk of tendon atrophy.

Surgical Management

Indications:

Failed comprehensive conservative management (6-12 months)
Significant gluteal tendon tear (full thickness)
Refractory symptoms affecting quality of life

Options:

Surgical Options for GTPS

Procedure	Indication	Technique	Outcomes
Bursectomy	Isolated refractory bursitis	Arthroscopic or open excision	Good if isolated bursitis (rare)
Tendon repair	Partial/full tear with good tissue	Open repair with suture anchors	80-90% good/excellent outcomes
Tendon reconstruction	Chronic tear with retraction	Allograft or autograft augmentation	Variable - depends on tissue quality
ITB release	ITB pathology/snapping hip	Arthroscopic or open Z-plasty	Good for snapping, uncertain for GTPS

Prognosis and Complications

Prognosis

GTPS generally has a good prognosis with appropriate management, though recovery may be prolonged.

Conservative Treatment Outcomes:

60-80% respond to comprehensive conservative management
Average time to resolution: 3-6 months
Recurrence common if load management not maintained
Chronic cases may persist for years

Factors Affecting Prognosis:

Prognostic Factors in GTPS

Favorable	Unfavorable
Short symptom duration (less than 3 months)	Chronic symptoms (greater than 12 months)
Tendinopathy without tear	Full thickness tear with retraction
Normal BMI	Obesity (BMI greater than 30)
Good compliance with physiotherapy	Poor engagement with rehabilitation
Modifiable risk factors addressed	Ongoing provocative activities

Complications

Of the Condition:

Chronic pain affecting sleep and function
Gluteal weakness and Trendelenburg gait
Progression to full thickness tear
Fatty infiltration of gluteal muscles (irreversible)

Of Treatment:

Corticosteroid injection: tendon weakening, skin atrophy, infection
Surgery: infection, wound complications, recurrence, nerve injury

Natural History

Unlike rotator cuff tears which may remain asymptomatic, gluteal tears typically cause significant symptoms due to the constant loading during walking. Fatty infiltration develops over time and is associated with poorer surgical outcomes, similar to the shoulder. Early diagnosis and appropriate management is important to prevent progression.

Evidence Base

Level III

Long SS, Surrey DE, Nazarian LN. Sonography of GTPS and the rarity of primary bursitis. AJR Am J Roentgenol. 2013;201(5):1083-6

Key Findings:

Gluteal tendinosis in 49.9% - bursitis in only 20.2%
Nearly 80% had no bursitis on ultrasound
ITB thickening present in 28.5%

Clinical Implication: The landmark prevalence study establishing that GTPS is primarily a tendinopathy of the gluteus medius/minimus, not a bursitis. The term trochanteric bursitis is misleading.

Verify on PubMed (PMID 24147479)

Level III

Cvitanic O, Henzie G, Skezas N, et al. MRI diagnosis of tears of the hip abductor tendons. AJR Am J Roentgenol. 2004;182(1):137-43

Key Findings:

MRI 91% accurate for abductor tendon tears
T2 hyperintensity superior to GT is the key sign
Tendon elongation and discontinuity are secondary signs

Clinical Implication: MRI is the reference standard for assessing gluteal tendon integrity and is useful for surgical planning. Note the best single sign reaches only 73% sensitivity, so correlate with clinical findings.

Verify on PubMed (PMID 14684527)

Level I

Mellor R, Bennell K, Grimaldi A, et al. Education plus exercise vs corticosteroid injection vs wait-and-see for gluteal tendinopathy (LEAP). BMJ. 2018;361:k1662

Key Findings:

Education plus exercise superior to injection at 8 and 52 weeks
Corticosteroid benefit not maintained at 1 year
Load-management education is a core component

Clinical Implication: Physiotherapy-led education and exercise is first-line. A single corticosteroid injection gives only short-term benefit; reserve it for adjunctive use, not as primary therapy.

Verify on PubMed (PMID 29720374)

Level I

Fitzpatrick J, Bulsara MK, O'Donnell J, et al. Leucocyte-rich PRP vs corticosteroid for gluteal tendinopathy: RCT with 2-year follow-up. Am J Sports Med. 2019;47(5):1130-7

Key Findings:

LR-PRP superior to corticosteroid at 12 and 24 weeks
PRP benefit sustained at 2 years; steroid benefit transient
Effective in tendinopathy without full-thickness tear

Clinical Implication: LR-PRP is a reasonable option for recalcitrant gluteal tendinopathy without full-thickness tearing, offering more durable benefit than corticosteroid - though it is not yet a universally funded or available therapy.

Verify on PubMed (PMID 30840831)

Level II

Lequesne M, Mathieu P, Vuillemin-Bodaghi V, et al. Diagnostic value of two clinical tests in refractory GTPS. Arthritis Rheum. 2008;59(2):241-6

Key Findings:

Single-leg stance (30s): sensitivity 100%, specificity 97.3%
Resisted external derotation: sensitivity 88%
Both tests validated against MRI

Clinical Implication: The 30-second single-leg stance is the most useful bedside test for GTPS and reproduces the patient's lateral hip pain - a high-yield examination point.

Verify on PubMed (PMID 18240186)

Controversies and Areas of Uncertainty

Corticosteroid injection

Useful for short-term pain relief but the LEAP RCT (Mellor 2018) showed it underperforms exercise at 1 year. Optimal timing, dose, and whether repeated injections damage tendon remain unsettled - most authors cap injections and pair them with rehabilitation.

PRP versus steroid

Fitzpatrick (2019) showed LR-PRP outperforms corticosteroid at 2 years in tendinopathy without full-thickness tear, but PRP preparation is non-standardised, costly, and not widely funded. Its place relative to a structured loading programme is undefined.

ITB stretching

Traditional ITB stretching may increase compressive load on the gluteal tendons against the trochanter and could be counterproductive. Contemporary programmes favour isometric/isotonic abductor loading over aggressive stretching.

Surgery: open vs endoscopic

Both achieve good results for abductor tears, but high-quality comparative trials are lacking. Indications, the role of tendon augmentation/reconstruction, and outcomes in chronic retracted tears with fatty infiltration remain debated.

Additional open questions include the true prevalence of asymptomatic gluteal tendinopathy, the prognostic value of MRI grading for guiding treatment, and the role of adjuncts such as extracorporeal shockwave therapy, where evidence is moderate and heterogeneous.

Clinical Decision Scenarios

Use these scenarios to practise clinical reasoning and management decisions

CLINICAL SCENARIOStandard

CLINICAL PROMPT

"Classic GTPS presentation in typical demographic. The examiner wants you to demonstrate systematic assessment and evidence-based management."

PRACTICAL APPROACH

This presentation suggests greater trochanteric pain syndrome given the lateral hip pain with provocative side-lying in a middle-aged woman. I would take a focused history asking about aggravating factors (stairs, crossing legs, single leg activities), functional impact, and exclude red flags. On examination, I would assess gait for Trendelenburg sign, check hip ROM (usually normal in GTPS), perform palpation over the greater trochanter looking for point tenderness, and test hip abductor strength. The single leg stance test for 30 seconds reproducing symptoms is highly sensitive. Management is conservative first - education about load modification, avoiding side-lying and leg crossing, physiotherapy focusing on gluteal strengthening without provocative positions. If failing at 6-8 weeks, imaging with ultrasound or MRI and consider corticosteroid injection with ongoing rehabilitation.

KEY CLINICAL POINTS

Point tenderness over GT with normal hip ROM suggests GTPS

Single leg stance test highly sensitive

Conservative management first - education and physio

Avoid early corticosteroid - may delay recovery

Modern understanding - tendinopathy not just bursitis

COMMON PITFALLS

Calling it trochanteric bursitis - term is outdated

Jumping to injection without conservative trial

Missing hip OA as alternative diagnosis (groin pain, reduced ROM)

Not addressing load modification and provocative activities

FURTHER QUESTIONS

"What would you do if she failed 3 months of conservative management?"

CLINICAL SCENARIOStandard

CLINICAL PROMPT

"The examiner is testing your knowledge of modern concepts in GTPS pathology."

PRACTICAL APPROACH

The current understanding is that GTPS is primarily a tendinopathy condition rather than bursitis. Studies have shown that 90% of patients have gluteal tendinopathy while isolated bursitis occurs in less than 10%. The gluteus medius and minimus are called the rotator cuff of the hip - they share similar pathology with shoulder rotator cuff disease. The tendons insert on the greater trochanter facets and are subjected to tensile loading during hip abduction and compressive loading from the overlying ITB during hip adduction. The female predominance (4:1) relates to the wider female pelvis creating increased ITB tensile strain. The pathology progresses from tendinopathy to partial tears to full thickness tears with retraction, similar to the shoulder.

KEY CLINICAL POINTS

90% have tendinopathy - only 8% have isolated bursitis

Rotator cuff of the hip - gluteus medius/minimus

Tensile plus compressive loading causes degeneration

Female predominance due to pelvic biomechanics

Progression mirrors rotator cuff disease

COMMON PITFALLS

Describing it as primarily a bursitis condition

Not knowing the tendon insertion anatomy

Forgetting the biomechanical factors explaining female predominance

FURTHER QUESTIONS

"How would you grade gluteal tendon pathology on MRI?"

CLINICAL SCENARIOStandard

CLINICAL PROMPT

"Common differential diagnosis question testing clinical reasoning."

PRACTICAL APPROACH

The key differentiating features are pain location, examination findings, and provocative factors. In GTPS, pain is located over the lateral hip at the greater trochanter - patients point directly to this area. In hip OA, pain is typically in the groin - patients demonstrate the C-sign cupping around the hip with fingers in the groin. On examination, GTPS has point tenderness over the GT but full, painless hip range of motion. Hip OA has reduced ROM particularly internal rotation and flexion, with crepitus and pain through the arc of movement. GTPS has positive single leg stance test reproducing lateral pain and often positive Trendelenburg. Hip OA has start-up stiffness and pain with weight bearing. The FABER test may be positive in both but will reproduce groin pain in OA and lateral hip pain in GTPS.

KEY CLINICAL POINTS

Pain location - lateral (GTPS) vs groin (OA)

C-sign demonstrates groin pain in OA

Hip ROM - normal in GTPS, reduced in OA

Point tenderness over GT diagnostic for GTPS

FABER test positive but pain location differs

COMMON PITFALLS

Not mentioning the C-sign

Forgetting that both conditions can coexist

Not assessing hip ROM properly

FURTHER QUESTIONS

"Can these conditions coexist and how would you manage a patient with both?"

CLINICAL SCENARIOChallenging

CLINICAL PROMPT

"Testing knowledge of evidence-based management and landmark trials."

PRACTICAL APPROACH

The evidence supports physiotherapy-led rehabilitation over corticosteroid injection for GTPS. The landmark RCT by Mellor et al (2018) of 204 patients compared education plus exercise versus corticosteroid injection versus wait-and-see. At 8 weeks and 1 year, education plus exercise was superior to both other groups. Importantly, the injection group had worse outcomes than wait-and-see at 1 year, suggesting injection may delay recovery. The short-term benefit of injection (60-75% initial response) diminishes by 3-6 months with no evidence of long-term benefit. There is also concern that repeated corticosteroid injection may weaken tendon tissue. Current recommendations are to use injection only for patients failing comprehensive conservative management at 6-8 weeks, combined with ongoing rehabilitation, and limited to maximum 3 injections.

KEY CLINICAL POINTS

Mellor 2018 RCT - exercise superior to injection at 1 year

Injection group worse than wait-and-see long-term

Short-term injection benefit diminishes at 3-6 months

Risk of tendon weakening with repeated injections

Maximum 3 injections recommended

COMMON PITFALLS

Recommending injection as first-line

Not knowing the Mellor RCT evidence

Not mentioning the risks of repeated injection

FURTHER QUESTIONS

"What role might PRP have in managing GTPS?"

CLINICAL SCENARIOChallenging

CLINICAL PROMPT

"Testing knowledge of surgical indications and techniques."

PRACTICAL APPROACH

Surgical intervention is considered after failed comprehensive conservative management for 6-12 months, particularly in patients with significant gluteal tendon tears demonstrated on MRI. The options depend on the pathology. For isolated refractory bursitis (rare), bursectomy can be performed arthroscopically or open. For gluteal tendon tears with good tissue quality, open repair using suture anchors to the greater trochanter footprint achieves 80-90% good to excellent outcomes. For chronic tears with retraction or poor tissue quality, reconstruction using allograft or autograft augmentation may be required with more variable outcomes. ITB release or Z-plasty may be added if there is ITB pathology or external snapping hip. Factors predicting poorer surgical outcome include chronic tears, significant muscle fatty infiltration, obesity, and poor compliance with post-operative rehabilitation.

KEY CLINICAL POINTS

Surgery after 6-12 months failed conservative Rx

MRI to characterize tear and muscle quality

Open repair with suture anchors for tears

Reconstruction for chronic tears with retraction

Fatty infiltration predicts poorer outcomes

COMMON PITFALLS

Recommending surgery too early

Not mentioning the importance of MRI assessment

Forgetting about post-operative rehabilitation

FURTHER QUESTIONS

"What post-operative rehabilitation protocol would you use?"

MCQ Practice Points

Terminology Clarification

Q: What is the current understanding of "trochanteric bursitis"?

A: Isolated bursitis is rare (less than 10%). Over 90% of GTPS cases involve gluteal tendinopathy with or without tears. The term "trochanteric bursitis" is outdated - Greater Trochanteric Pain Syndrome (GTPS) is preferred as it encompasses the spectrum of pathology.

Classic Clinical Presentation

Q: What is the pathognomonic symptom of GTPS?

A: Inability to sleep on the affected side (lateral decubitus position). This is virtually universal in GTPS and reflects direct pressure on the inflamed trochanteric region. Other features: lateral hip pain with stairs, prolonged sitting, or single-leg stance.

Examination Findings

Q: What examination finding indicates abductor weakness in GTPS?

A: Positive Trendelenburg test - pelvis drops on contralateral side during single-leg stance, indicating gluteus medius/minimus weakness or tendinopathy. Single-leg stance for 30 seconds is 100% sensitive for GTPS when positive (pain reproduction).

Key Differential

Q: How do you differentiate GTPS from hip joint pathology on examination?

A: In GTPS, hip range of motion is typically normal with pain localized to the greater trochanter on palpation. Hip joint pathology (OA, FAI, labral tears) causes groin pain, limited ROM (especially internal rotation), and positive impingement tests.

Guidelines, Registries & Global Practice

Global Epidemiology

Lateral hip pain affects an estimated 10-25% of adults; population-based data (Segal 2007, MOST cohort) report a point prevalence of ~15% in women and ~6.6% in men aged 50-79 years.
Incidence peaks at 1.8 per 1000 person-years in primary care for those aged 40-60 years.
Marked female predominance (roughly 3:1 to 4:1) is consistent across populations and is attributed to pelvic morphology (wider pelvis, larger trochanteric offset increasing ITB compressive load).
Strong associations with low back pain, ipsilateral knee/hip osteoarthritis, obesity, and reduced physical activity are reported worldwide.

Society Guidance Compared

GTPS / Gluteal Tendinopathy - Society Positions

Body / Source	Diagnosis	First-line	Injection / Surgery
NICE CKS (UK)	Clinical; imaging only if uncertain or red flags	Load management, analgesia, physiotherapy	Corticosteroid for short-term relief; refer if refractory
BOA / UK practice	Clinical with US/MRI for surgical planning	Exercise-based rehabilitation (tendon load management)	Endoscopic/open abductor repair for confirmed tears
AAOS / US sports medicine	Clinical; MRI to characterise tears	Activity modification, PT, ESWT	Image-guided injection, PRP, surgical repair
European (ESSKA/EFORT) consensus	Tendinopathy spectrum framing	Progressive loading, education	PRP and surgical repair for recalcitrant tears

There is broad international agreement that GTPS is a clinical diagnosis, that exercise-based rehabilitation is first-line, and that corticosteroid injection offers only short-term benefit. No major society endorses injection or surgery as primary therapy.

Registry & Outcome Notes

There is no dedicated GTPS registry. Surgical-outcome evidence comes from systematic reviews (e.g. Chandrasekaran 2015) reporting comparable results for open and endoscopic abductor repair, with retear and persistent weakness more common in chronic tears with fatty infiltration. Differentiating GTPS from referred pain after total hip arthroplasty is a recognised issue in arthroplasty-registry follow-up.

High- vs Limited-Resource Practice Variation

Well-resourced settings: ready access to ultrasound/MRI, ultrasound-guided injection, supervised physiotherapy, PRP, and endoscopic abductor repair.
Limited-resource settings: diagnosis is clinical (single-leg stance, palpation); management relies on education, home-based loading programmes, oral/topical NSAIDs, and landmark-guided corticosteroid injection. Surgery and PRP are rarely available, reinforcing the global priority of conservative, low-cost rehabilitation.