Hip Assessment Masterclass

The VerdictMODERATE CONVICTION

"My hip hurts" is the start of seven different stories, and the right exam picks the right story before anyone touches the hip with a treatment.

Lie on your back. Bring one knee toward your chest. If the hip catches deep in the groin before 120 degrees and the pain is in the front of the hip where you can grip it between your thumb and forefinger (the C-sign), the problem is most likely INSIDE the joint. If the front of your hip moves fine but the OUTSIDE of your hip is sore — especially when you sleep on that side — the problem is a tendon on the outside, not the joint. Different problem, different treatment. Same MRI, almost always.

What this actually is: adult hip and groin pain comes from at least seven different sources — hip arthritis, joint impingement, a labral problem inside the joint, a tendon problem on the outside (gluteal), a hip-flexor tendon problem at the front, an adductor tendon problem on the inside, or a snapping hip. Each needs a different fix.
What most people get wrong: running every special test on every patient, then trying to weight which positive result matters. The cluster of history plus movement plus two or three targeted tests does the work of fifteen single tests, with fewer false positives.
The first thing to start doing: write down the location of the pain, the activities that aggravate it, and when it shows up — before you book the appointment. The history does more diagnostic work than any single test or scan.

Imagine a noisy car engine. You can scan the whole engine bay with a thermal camera (the MRI) and find six warm spots — but only one of them is the actual problem. The mechanic who fixes your car listens for where the noise is loudest, watches the belt move, and turns one bolt to test the symptom. The MRI is a wide-net snapshot. A good hip assessment is the mechanic narrowing the search to one part. Treating the wrong warm spot is what makes a hip rehab fail in week 6.

What Works

Dark cinematic anatomical visualisation of the adult hip with surrounding tendons and joint structures

Tiered, presentation-driven examination STRONG

A 25-45 minute exam anchored on history + C-sign + pain pattern + movement screen + range of motion + a targeted cluster of two or three special tests matched to the suspected sub-pathway, plus a patient-reported outcome baseline and a performance-based outcome baseline. CPG-endorsed by APTA 2025 hip OA Revision, APTA Nonarthritic Hip Pain CPG 2024/25, and AAOS 2024-25 hip OA guideline.

Minimum useful exam (≤10 min): history + NPRS + ROM + one targeted special test + one functional surrogate. Use for triage and follow-up visits.

Standard exam (≤25 min): add PROM (HOOS / WOMAC / HAGOS / iHOT) + performance-based test + cluster. Use for new patients.

Comprehensive exam (≤45 min): add full strength battery + sport-specific provocation + imaging triage decision. Use when the presentation is unclear or surgical decision is on the table.

The hip OA minimum core dataset STRONG

For any adult over 50 presenting with progressive hip pain and limited internal rotation, baseline and re-measure at 6 and 12 weeks. OARSI international consensus + APTA 2025 endorsement.

HOOS or WOMAC + NPRS — patient-reported pain and function. Baseline and every 6 weeks.

30-second Chair Stand Test — lower-extremity strength and power. Reliability ICC > 0.85.

Timed-Up-and-Go (TUG) — functional mobility, falls-risk relevant. MCID approximately 0.8-1.4 seconds in older adults.

40-m Fast-paced Walk Test OR 6MWT — gait speed and endurance.

Stair Climb Test — vertical loading capacity.

ROM + hip abductor strength + FABER — impairment measures alongside outcomes.

Imaging triage by indication STRONG

AAOS 2024-25 + ACR Appropriateness Criteria converge on the same triage logic.

Plain radiograph first — for adults over 50 with progressive hip pain and limited internal rotation.

MRI / MR-arthrogram only when — surgical decision realistic AND ≥6 weeks of structured conservative care has not changed status.

Immediate MRI — any red flag (stress fracture suspicion, AVN, malignancy, iliopsoas haematoma).

Why not MRI first? — cam morphology and labral signal abnormalities are common in asymptomatic athletic adults (25-40% incidental positives). MRI-first drives over-treatment.

FAI / labral cluster MODERATE

For nonarthritic intra-articular suspicion in 18-50 active adults.

5-component cluster — deep groin C-sign + FADIR + Anterior Impingement Test + loss of internal rotation in flexion + history of catching or clicking.

Decision rule — ≥3 positives raise pre-test probability sufficient to justify plain radiograph. NOT confirmatory in isolation.

LEAP cluster for greater trochanteric pain syndrome MODERATE

Lateral hip pain pathway. Grimaldi 2017 BMJ LEAP trial entry-criteria cluster.

4-component cluster — palpation of greater trochanter + single-leg stance ≥30 seconds + resisted hip abduction in slight flexion + resisted external de-rotation.

Decision rule — ≥2 positives + ≥1 month duration + lateral location supports diagnosis WITHOUT imaging.

Hip-spine rule-out-the-hip-first MODERATE

In adults over 50 with combined buttock-groin-thigh pain.

Screen — passive internal rotation in supine + FABER + flexion-IR.

Decision rule — if hip provocation reproduces the dominant pain, treat the hip BEFORE treating the spine.

Tier 3 (Emerging-Moderate) — measurement upgrades and time budgets

Handheld dynamometry over MMT MODERATE

For tracking hip abductor, flexor, extensor strength over time. Manual muscle testing (4 of 5 vs 5 of 5) has ceiling effects and poor inter-rater reliability. Where dynamometry is not feasible, use functional surrogates: single-leg sit-to-stand quality, lateral step-down quality, single-leg stance time.

Adductor squeeze test for groin pain MODERATE

For medial groin presentations: squeeze test at 0°, 45°, 90° knee flexion + adductor longus palpation. Doha agreement entity. Cross-reference the 2026-04-10 adductor-strain protocol.

Snapping-hip sub-typing STRONG (principle)

External (lateral, ITB / glute max over greater trochanter), internal (anterior, iliopsoas over iliopectineal eminence), intra-articular (catching with FADIR-positive features). Sub-type BEFORE treating. Cross-reference the 2026-05-16 snapping-hip protocol.

What Doesn't Work

Stand-alone use of a single hip special test as confirmatory. A positive FADIR alone does not confirm FAI or labral tear. Settled-evidence rejection.
Routine manual muscle testing (4 of 5 vs 5 of 5) as a reliable strength tracking measure between examiners or between sessions.
Routine MRI as first-line imaging for any persistent hip pain. Drives over-treatment via incidental findings in asymptomatic athletic adults.
Treating snapping hip as one condition with one rehab protocol.
Skipping patient-reported outcome measures and performance-based tests because they “take too long” — this leaves the pathway with no objective measure of response to care 12 weeks later.

Return to Training

Assessment-level criteria. Sub-pathway-specific return-to-training criteria live in the respective condition protocols (hip OA, FAI, labral tear, GTPS, hip flexor, adductor, snapping hip).

Working diagnosis identified and sub-pathway confirmed (history + cluster + movement screen all converge)
Red flags screened and cleared
PROM baseline recorded (HOOS or WOMAC or HAGOS or iHOT as appropriate)
Performance-based outcome baseline recorded (at least two from the OARSI core for hip OA; at least one functional surrogate for non-OA pathways)
Clear treatment plan matched to the identified sub-pathway
Patient understands the activity modifications for the first 6 weeks
Reassessment scheduled at 6 weeks (and 12 weeks for hip OA)

Red Flags — Refer Immediately

Femoral neck stress fracture / fragility fracture — night pain, weight-bearing pain disproportionate to activity, female endurance athlete or older adult with osteoporosis risk. Do NOT perform provocative loading.
Avascular necrosis of the femoral head — insidious deep groin pain, painful restricted internal rotation, risk factors (steroids, alcohol, sickle cell, post-trauma).
Adolescent with hip pain + limp + obligatory external rotation on hip flexion — screen for SCFE / Perthes.
Septic arthritis — fever + hot swollen joint + severe pain on micro-movement + recent infection or IV-drug use.
Hip / pelvic malignancy or bone metastasis — night pain, weight loss, cancer history, progressive pain unresponsive to position change.
Iliopsoas haematoma — anticoagulants + sudden severe anterior groin pain + femoral nerve neurology.
Cauda equina syndrome masquerading as bilateral hip pain — saddle anaesthesia, bowel / bladder change, bilateral leg neurology.
Mechanical locking or true giving way — intra-articular loose body / chondral flap / labral interposition. Imaging-led referral, not rehab.
Progressive deep groin pain >6 weeks unresponsive to conservative care — suspect FAI / labral / chondral pathology; imaging + orthopaedic input.

Refer to: A&E for septic arthritis, cauda equina, iliopsoas haematoma. Same-day GP for suspected fracture or malignancy red flags. Orthopaedic surgery for SCFE / Perthes (paediatric), refractory FAI / labral pathology, severe hip OA with surgical candidacy.

The Verdict

“My hip hurts” is the start of seven different stories, and the right exam picks the right story before anyone touches the hip with a treatment.

Imagine a noisy car engine. You can scan the whole engine bay with a thermal camera (the MRI) and find six warm spots, but only one of them is the actual problem. The mechanic who fixes your car listens for where the noise is loudest, watches the belt move, and turns one bolt to test the symptom. The MRI is a wide-net snapshot. A good hip assessment is the mechanic narrowing the search to one part. Treating the wrong warm spot is what makes a hip rehab fail in week 6.

What this actually is:adult hip and groin pain comes from at least seven different sources — arthritis, joint impingement, a labral problem inside the joint, a tendon problem on the outside (gluteal), a hip-flexor tendon problem at the front, an adductor tendon problem on the inside, or a snapping hip. Each one needs a different fix.
What most people get wrong:running every special test on every patient, then trying to weight which positive matters. The cluster of history plus movement plus two or three targeted tests does the work of fifteen single tests, with fewer false positives.
Start here:before you book the appointment, write down where the pain is, what activities aggravate it, and when it shows up. The history does more diagnostic work than any single test or scan.

Best for

Any adult with new or persistent hip / groin / lateral hip / anterior thigh pain who has not yet had a structured examination by a physical therapist.

Skip if

You have any red flag listed above — go to A&E or arrange same-day medical review, not a routine physio booking.

Want the full evidence? Keep scrolling ⌄

Conviction MODERATE-HIGH

CPG-anchored cluster approach for hip OAHIGH
Sub-typing nonarthritic hip painMODERATE-HIGH
Imaging triage by indicationHIGH
Hip-spine rule-out-the-hip-firstMODERATE-HIGH
Stand-alone single-test confirmatory accuracyLOW (rejected)
Snapping-hip sub-typing principleHIGH
Performance-based outcome measures for hip OA trackingHIGH
Handheld dynamometry over manual muscle testingMODERATE

What would change my mind — the comprehensive vs minimum-useful exam trial

A multicentre primary-care physiotherapy diagnostic-accuracy study (N ≥ 800 adults, mixed activity-level and age, prospective presentation-naive enrolment, blinded reference standard = combination of MR-arthrogram for intra-articular and clinical follow-up at 12 months for extra-articular) comparing a 20-minute “minimum useful” exam against a 45-minute “comprehensive” exam against final diagnosis at 12 months. Primary endpoints: (a) diagnostic accuracy by sub-pathway, (b) management-decision concordance with orthopaedic gold standard, (c) patient-reported outcome at 6 and 12 months. If comprehensive outperforms minimum useful by clinically meaningful margins, the tiered recommendation shifts toward “always run the comprehensive battery in that sub-pathway.” If they match, the recommendation strengthens toward “stop running tests that do not change management.”

What would change my mind — the single-test rehabilitation

An independently replicated diagnostic-accuracy study in primary-care physiotherapy populations showing that any one hip special test (FADIR, FABER, Stinchfield, scour) achieves both sensitivity and specificity > 90% against a blinded reference standard. Until that exists, single-test confirmatory use is rejected.

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The Full Picture — Anatomy, Diagnosis & Evidence

What's Actually Going On

Dark cinematic anatomical view of the acetabulofemoral joint and surrounding hip soft tissue

Hip assessment is not a single pathology — it is the clinical workflow that converts a patient's presentation into a working sub-pathway diagnosis. The recurring clinical failure is treating each special test as confirmatory in isolation. The current evidence base, summarised across the 2025 APTA hip OA Revision, the 2024-25 APTA Nonarthritic Hip Pain CPG, the 2024-25 AAOS hip OA guideline, and the Reiman diagnostic-accuracy systematic review literature, all moves the same direction. Single special tests have high sensitivity and low specificity. They function as screens, not confirmations. Cluster reasoning, history, movement, and presentation-driven examination consistently outperform any individual maneuver. The examination is a sequence of probability updates, not a hunt for one pathognomonic sign.

The seven adult hip sub-pathways the assessment must discriminate between:

Hip osteoarthritis (intra-articular, degenerative, dominant over 50)
Femoroacetabular impingement syndrome (intra-articular, cam or pincer morphology, athletic / active 18-50)
Acetabular labral tear (intra-articular, often co-occurs with FAI)
Greater trochanteric pain syndrome / gluteal tendinopathy (lateral hip, common in women over 40 and runners)
Hip flexor / iliopsoas tendinopathy (anterior, athletic populations)
Adductor-related groin pain (medial groin, kicking / cutting athletes — Doha entity)
Snapping hip syndrome — external, internal, or intra-articular sub-types

Plus three differential boundaries that look like hip pain: hip-spine syndrome (lumbar or SI joint referring to the hip region), femoral neck stress fracture (red flag), and adolescent sub-pathway (SCFE, Perthes, osteochondroma — referral track, not adult rehab).

How to Identify It

Cinematic visualisation of clinical hip examination motion through joint range

The two-stage discrimination logic: history + C-sign localisation + pain pattern + capsular-restriction pattern separate intra-articular from extra-articular more cleanly than any single special test. Then the sub-pathway cluster does the second stage.

Top tests per sub-pathway:

FADIR (Flexion-Adduction-Internal Rotation) Sn ~78-96% / Sp ~10-25% — intra-articular SCREEN, not confirmation. Useful negative rule-out.
Palpation of greater trochanter + single-leg stance ≥30 s LEAP cluster — GTPS primary screen.
Adductor squeeze test (0° / 45°) Doha cluster — medial groin / adductor pathology.
Capsular pattern ROM loss (flexion + IR + abduction restricted) hip OA — the OA tell.
Hip flexion-extension while standing snapping-hip sub-typing — reproduces external SHS snap.
FABIR-to-ESIR active sweep snapping-hip sub-typing — reproduces internal SHS snap.

Patient-reported outcomes by population: HOOS for hip OA AND nonarthritic hip pathology. WOMAC for hip OA specifically. HAGOS for athletic hip and groin pain. iHOT-12 / iHOT-33 for young athletic hip pathology. NPRS as universal pain monitor.

Performance-based outcomes (OARSI core): 30-second chair stand, 40-m fast-paced walk, stair climb, TUG, 6MWT. ICC > 0.85 across hip / knee OA cohorts.

The Debate

Older teaching: single special tests confirm intra-articular pathology in isolation. Recent evidence: most hip special tests are HIGH sensitivity, LOW specificity individually — they function as screens, not confirmations. Cluster + imaging-on-indication required (Reiman 2014/15 BJSM SR; Maslowski 2010 PM&R; APTA Nonarthritic Hip CPG 2024/25).

Older teaching: hip OA exam = passive ROM + FABER. Recent evidence: hip OA exam = HOOS or WOMAC + NPRS + ROM + hip strength + OARSI performance core (30-s chair stand, 40-m walk or 6MWT, stair climb, TUG) + FABER as part of cluster. APTA 2025 hip OA Revision CPG.

Older teaching: MRI early for any persistent hip pain. Recent evidence: plain radiograph first for OA pathway; MRI / MR-arthrogram reserved for surgical-decision-realistic non-OA intra-articular suspicion OR red-flag-positive presentations. AAOS 2024-25 + ACR Appropriateness Criteria.

Older teaching: snapping hip is one condition with one rehab. Recent evidence: three conditions (external, internal, intra-articular) that share one symptom and almost nothing else. Sub-typing must precede treatment. (2026-05-16 physio snapping-hip protocol.)

Older teaching: hip and spine assessed independently in older adults. Recent evidence: hip-spine syndrome is common over 50; rule the hip out in any combined buttock-groin-thigh presentation before treating the spine.

Older teaching: manual muscle testing 4/5 vs 5/5 is a strength assessment. Recent evidence: handheld dynamometry where available, functional surrogates otherwise. MMT alone has ceiling effects and poor inter-rater reliability in the 4/5+ range.

Honest Limitations

Test-cluster psychometrics shift by setting. Hip special-test sensitivity and specificity figures (FADIR Sn ~78-96% / Sp ~10-25%) come predominantly from secondary and tertiary orthopaedic populations with HIGH pre-test probability of intra-articular pathology. In primary-care physiotherapy populations the pre-test probability is much lower, which changes the post-test probability of a positive test even with identical sensitivity and specificity. Adjust your imaging-referral thresholds for the population you actually see.

Examiner experience and inter-rater reliability are uneven across tests. Palpation and ROM measurements have only MODERATE inter-rater reliability in adult MSK studies. Two physical therapists examining the same patient on the same day will not always agree on whether internal rotation is “restricted” or whether the greater trochanter is “tender.” Prefer outcomes that are LESS examiner-dependent (PROMs, performance-based tests, handheld dynamometry) for tracking response.

The “comprehensive exam” does not equal “useful exam.” A 60-minute exam that captures everything is rarely deliverable in NHS or private outpatient clinical caseloads. The translational risk is the opposite of what new clinicians often fear — not “I missed a test,” but “I ran twenty tests, two were positive, and I cannot tell which signal to trust.”

The Nuance

Cinematic anatomical view of hip and pelvis differential structures

Most hip and groin pain in adults presenting to primary-care physiotherapy is conservatively managed successfully when assessment is structured and treatment is matched to the correct sub-pathway. The most common surgical-pathway error is over-imaging into an incidental finding (cam morphology, labral signal abnormality) in a patient who would have responded to structured conservative care. The most common conservative-pathway error is treating the wrong sub-pathway — external-SHS ITB protocol applied to an internal-SHS iliopsoas-driven snap; hip-OA rehab applied to a hip-spine-syndrome presentation where the lumbar source goes untreated. Assessment quality drives outcome quality, not exam length.

For adults over 50 with combined buttock-groin-thigh pain, the order of operations matters. The hip is structurally simpler to rule out than the spine: passive internal rotation in supine, FABER, and flexion-IR take 90 seconds and produce an immediate probability update. If those three reproduce the dominant pain, the hip is the primary driver. Treating the back without ruling out the hip first is a documented care-pathway failure.

Sources

APTA Academy of Orthopaedic Physical Therapy. (2025). Hip Pain and Mobility Deficits — Hip Osteoarthritis: Revision 2025 Clinical Practice Guideline. J Orthop Sports Phys Ther.
APTA Academy of Orthopaedic Physical Therapy. (2024/2025 update). Nonarthritic Hip Joint Pain Clinical Practice Guideline. J Orthop Sports Phys Ther.
American Academy of Orthopaedic Surgeons. (2024-2025 update). Management of Osteoarthritis of the Hip: Evidence-Based Clinical Practice Guideline.
Reiman MP, Goode AP, Cook CE, Hölmich P, Thorborg K. (2014/2015). Diagnostic accuracy of clinical tests for the hip joint: a systematic review. British Journal of Sports Medicine.
Maslowski E, Sullivan W, Forster Harwood J, Yu A, Bang H, Cao Y. (2010). The diagnostic validity of hip provocation maneuvers to detect intra-articular hip pathology. PM&R.
Grimaldi A, Mellor R, Hodges P, Bennell K, Wajswelner H, Vicenzino B. (2017). Education plus exercise versus corticosteroid injection use versus a wait and see approach on global outcome and pain from gluteal tendinopathy: LEAP trial. BMJ.
Dobson F, Hinman RS, Roos EM, et al. (2013). OARSI recommended performance-based tests to assess physical function in people diagnosed with hip or knee osteoarthritis. Osteoarthritis and Cartilage.
Griffin DR, Dickenson EJ, O'Donnell J, et al. (2016). The Warwick Agreement on femoroacetabular impingement syndrome. British Journal of Sports Medicine.
Griffin DR, Dickenson EJ, Wall PDH, et al. (2018). Hip arthroscopy versus best conservative care for the treatment of femoroacetabular impingement syndrome (UK FASHIoN). The Lancet.
Weir A, Brukner P, Delahunt E, et al. (2015). Doha agreement on terminology and definitions in groin pain in athletes. British Journal of Sports Medicine.
Roos EM, Roos HP, Lohmander LS, Ekdahl C, Beynnon BD. (1998/2003). Hip disability and Osteoarthritis Outcome Score (HOOS) validation.
Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW. (1988). Validation study of WOMAC. J Rheumatol.
Chiarotto A, Ostelo RW, Turk DC, Buchbinder R, Boers M. (2017). Core outcome sets for research and clinical practice. Brazilian Journal of Physical Therapy. PMID 28460714.