Hip Osteoarthritis
Lower LimbOverview
Hip osteoarthritis is a progressive degenerative joint disease characterized by cartilage loss, osteophyte formation, and joint space narrowing in the hip joint. It results in pain, stiffness, and functional limitation, predominantly affecting middle-aged and older adults. The condition significantly impacts mobility and quality of life, requiring multimodal conservative management.
Pathophysiology
Hip osteoarthritis develops through progressive breakdown of articular cartilage due to mechanical stress, inflammatory processes, and biomechanical dysfunction. Risk factors include age, obesity, previous trauma, femoroacetabular impingement, dysplasia, and repetitive high-impact activities. Cartilage degradation triggers synovial inflammation, osteophyte formation at joint margins, subchondral bone sclerosis, and eventual joint space narrowing. This leads to altered joint mechanics, muscle atrophy, reduced proprioception, and compensatory movement patterns throughout the kinetic chain.
Patient Education
Hip osteoarthritis is a long-term condition requiring active participation in strengthening, flexibility work, and activity modification; while progressive, conservative management can significantly improve function and delay surgical intervention.
Typical Presentation
Site
Hip joint, often unilateral initially; may present in groin, anterior hip, lateral hip, or buttock; pain may refer to knee or lower back
Quality
Deep, aching pain with mechanical characteristics; grinding or clicking sensations; morning stiffness described as 'gelling'
Intensity
Variable 3-8/10, typically worse with activity and improving with rest; morning symptoms often severe but improve with movement
Aggravating
Prolonged sitting or hip flexion, stairs (ascending more than descending), walking long distances, standing from low chairs, internal rotation movements, heavy lifting, lying on affected side
Relieving
Rest, heat application, gentle movement after warm-up, anti-inflammatory medication, hip flexor stretching, sitting with hip supported
Associated
Morning stiffness 30-60 minutes, limited hip internal rotation and flexion, hip muscle weakness (gluteus medius, quadriceps), altered gait with antalgic pattern, clicking/clunking, occasional night pain, compensatory lower back pain
Orthopaedic Tests
FABER Test (Flexion-Abduction-External Rotation)
Procedure
Patient supine. Flex the affected hip and knee, place the lateral ankle on the opposite knee, then gently apply overpressure to the bent knee toward the table. Pain in the groin or anterior hip suggests positive finding.
Positive Finding
Groin pain or anterior hip pain, or inability to achieve full range of motion with overpressure
Related reference: Maslowski E, Sullivan W, Forster Harwood J, Gonzalez P, Kaufman M, Vidal A, Akuthota V. The diagnostic validity of hip provocation maneuvers to detect intra-articular hip pathology. PM R 2010;2(3):174-81; PMID 20359681
Interpretation
Sensitive but not specific (around 0.82 / 0.38 or below) — a negative argues somewhat against intra-articular pathology; a positive does not confirm it. Groin or anterior hip pain is the meaningful finding; lateral or posterior pain points away from the joint, towards extra-articular or sacroiliac sources. Corroborate with loss of internal rotation, the rest of the examination, and imaging.
Log Roll Test (Internal Rotation in Prone or Supine)
Procedure
Patient supine, hip flexed to 90° and knee flexed to 90°. Internally rotate the hip by rolling the lower leg medially. Assess for pain and range of motion restriction.
Positive Finding
Groin or anterior hip pain; restriction of internal rotation ROM (normally 30–45°)
Related reference: Sutlive TG, Lopez HP, Schnitker DE, et al. Development of a clinical prediction rule for diagnosing hip osteoarthritis in individuals with unilateral hip pain. J Orthop Sports Phys Ther 2008;38(9):542-50; doi 10.2519/jospt.2008.2753 (PMID pending STEP 0 confirmation)
Interpretation
Loss of hip internal rotation is the single most useful physical finding in hip osteoarthritis; passive internal rotation of 25 degrees or less is one of five predictors in the Sutlive clinical prediction rule (+LR 24.3 for radiographic osteoarthritis at four of five). The log roll assesses that rotation with the limb relaxed, so pain and end-feel reflect the joint and capsule rather than muscle guarding. Sutlive is a derivation study, not prospectively validated.
Thomas Test
Procedure
Patient supine at end of table. Flex one knee to chest to eliminate lumbar lordosis. Assess hip flexion contracture of opposite hip; measure angle between thigh and horizontal plane.
Positive Finding
Hip cannot extend fully to neutral; thigh remains elevated above the table (positive Thomas angle)
Interpretation
Documents loss of hip extension, common in hip osteoarthritis from capsular tightness and pain-avoidance posturing, but does not diagnose it. No diagnostic-accuracy study establishes sensitivity or specificity for the Thomas test in hip osteoarthritis.
Trendelenburg Test and Gait Analysis
Procedure
Patient standing on one leg (affected side) for 20–30 seconds, or observe during single-leg stance and gait. Look for ipsilateral pelvic drop or trunk lean toward the stance leg.
Positive Finding
Pelvis drops on non-stance side; trunk leans toward stance side to maintain balance
Interpretation
Indicates hip abductor insufficiency — from pain inhibition, gluteal tendinopathy or superior gluteal nerve involvement — and is not specific to osteoarthritis. Often accompanies lateral hip pain and gait dysfunction. No diagnostic-accuracy study establishes sensitivity or specificity for this test in hip osteoarthritis.
FADIR Test (Flexion-Adduction-Internal Rotation)
Procedure
Patient supine. Hip flexed to 90°, knee flexed to 90°. Adduct the hip across the midline while internally rotating. Apply gentle overpressure at the end of range.
Positive Finding
Groin pain or anterior hip pain with this movement pattern
Sensitivity / Specificity
Reference: Reiman MP, Goode AP, Cook CE, Hölmich P, Thorborg K. Diagnostic accuracy of clinical tests for the diagnosis of hip femoroacetabular impingement/labral tear: a systematic review with meta-analysis. Br J Sports Med 2015;49(12):811; PMID 25515771
Interpretation
A near-perfect screening test and a poor confirmatory one. Pooled sensitivity 0.94-0.99, so a NEGATIVE FADIR is genuinely useful — it makes intra-articular hip pathology unlikely. A POSITIVE is close to uninformative on its own, because specificity is very low: it is positive in osteoarthritis, labral tears, impingement and a substantial proportion of asymptomatic hips. Note the pooled figures were derived in impingement and labral tear cohorts rather than osteoarthritis, so they transfer only approximately.
⚠ Red Flags
- •Sudden onset with severe pain and inability to bear weight suggesting acute fracture or dislocation
- •Systemic symptoms (fever, night sweats, unintentional weight loss) suggesting inflammatory arthropathy or infection
- •Progressive neurological deficit or cauda equina symptoms suggesting spinal involvement
- •Signs of septic arthritis (severe pain, warmth, effusion, constitutional symptoms)
- •Rapid progression of pain with acute functional loss suggesting acute exacerbation or occult fracture
- •History of cancer with new hip pain suggesting metastatic disease
⚡ Yellow Flags
- •High pain catastrophizing and fear-avoidance beliefs reducing activity levels
- •Severe obesity limiting treatment options and prognosis
- •Significant psychological distress or depression affecting recovery motivation
- •Unrealistic expectations about treatment outcomes or complete resolution
- •Social isolation or lack of support for rehabilitation compliance
- •Work-related factors limiting activity modification capability
- •Sleep disturbance due to nocturnal pain affecting healing and mood
Osteopathic Techniques
Region
Hip joint and acetabular region
Technique
Rationale
Gentle oscillatory mobilization of the hip joint improves synovial fluid distribution, reduces pain through gate control mechanisms, and maintains joint mobility within pain-free ranges; particularly effective in early to moderate osteoarthritis
Region
Hip flexors (iliopsoas, rectus femoris)
Technique
Rationale
Hip flexor tightness increases anterior hip capsule compression and alters pelvic mechanics; soft tissue release reduces compensatory tension and improves hip extension range, reducing load on arthritic joint
Region
Piriformis and deep hip rotators
Technique
Rationale
Muscle energy technique addressing external rotator tightness restores hip internal rotation, improves hip stability through better muscle balance, and reduces compensatory forces through the joint
Region
Lumbar spine and sacroiliac joints
Technique
Rationale
Hip osteoarthritis commonly causes compensatory stress through the lumbar spine and sacroiliac joints; addressing these areas reduces referred pain and improves global pelvic mechanics
Region
Gluteal region and hip extensors
Technique
Rationale
Soft tissue release of gluteus maximus and medius addresses myofascial restrictions and improves neuromuscular activation patterns essential for pain-free hip function
Region
Whole pelvis and lower limb
Technique
Rationale
Functional technique allows joints to find neutral positions, reducing mechanical stress through the arthritic hip joint while maintaining muscle activation; reduces pain and improves proprioception
Add-On Approaches
Chinese Medicine
TCM approaches focus on Kidney and Liver meridian deficiency causing joint stagnation; acupuncture to GB34, LV3, and local points (GB29, GB30) combined with warming moxibustion may reduce pain and improve circulation
Chiropractic
Chiropractic care may address sacroiliac joint dysfunction and lumbar spine restrictions contributing to hip compensation; diversified adjustments to lumbar and sacroiliac joints may provide adjunctive relief
Physiotherapy
Progressive resistance training for hip abductors and extensors, proprioceptive training, aquatic therapy for pain-free strengthening, and functional movement retraining are evidence-based for improving strength and function
Remedial Massage
Deep tissue massage and myofascial release targeting hip flexors, adductors, and gluteal muscles reduce muscle guarding; trigger point therapy addresses referral patterns contributing to pain perception
Rehabilitation Exercises
Supine Hip Flexor Stretch (Modified Thomas Position)
Piriformis Stretch (Supine Figure-4)
Adductor Longus Stretch (Supine Butterfly)
Supine Glute Bridges
Sidelying Hip Abduction (Clamshells)
Quadruped Hip Extension
Standing Single-Leg Hip Abduction with Support
Single-Leg Stance with Counter Support
Hip Hinge Movement Pattern Training
Sit-to-Stand from Elevated Surface
Aquatic Walking or Swimming
Standing Hip Flexion with Resistance Band
Referral Criteria
- •Persistent severe pain unresponsive to 8-12 weeks of conservative management suggesting need for imaging or orthopedic evaluation
- •Functional limitation affecting activities of daily living or employment requiring specialist assessment for joint replacement consideration
- •Suspected septic arthritis or acute inflammatory process requiring urgent medical investigation
- •Signs of systemic disease or polyarticular involvement suggesting rheumatological condition requiring rheumatology referral
- •Significant obesity limiting treatment efficacy; referral to dietitian and exercise physiologist for weight management
- •Progressive neurological signs or referred pain suggesting lumbar spine or nerve involvement requiring medical imaging and appropriate specialist review
- •Chronic pain with significant psychological component or fear-avoidance behavior requiring psychologist or pain management specialist
- •Failure to progress despite appropriate exercise and manual therapy; consideration for corticosteroid injection or orthopedic surgical consultation