How should I evaluate and manage an 88-year-old woman with a 5-year history of chronic left hip pain without trauma, pain only on mobilization and limited to pivot transfers?

Evaluation and Management of Chronic Hip Pain in an 88-Year-Old Woman

Obtain anteroposterior pelvis and frog-leg lateral hip radiographs immediately as your first diagnostic step, as this 5-year history of mobilization-only pain in an elderly patient most likely represents osteoarthritis, but you must exclude occult fracture, avascular necrosis, or malignancy. 1, 2

Initial Imaging Strategy

• Plain radiographs (AP pelvis + frog-leg lateral hip) are mandatory first-line imaging for any patient presenting with hip pain, regardless of chronicity 1, 3, 2
• These views serve as an excellent screening tool to identify osteoarthritis (most common in this age group), occult fractures, avascular necrosis, and bone tumors 1
• The 5-year chronicity makes acute fracture less likely, but stress fractures and insufficiency fractures can present insidiously in elderly patients 1

Key Clinical Features to Assess

Pain location matters for differential diagnosis:

• Anterior hip/groin pain suggests intra-articular pathology (osteoarthritis, labral tear, femoroacetabular impingement) 3, 2
• Lateral hip pain indicates greater trochanteric pain syndrome (gluteus medius tendinopathy, trochanteric bursitis) 3, 2
• Posterior hip/buttock pain suggests referred pain from lumbar spine, sacroiliac joint, or piriformis syndrome 3, 2

Critical examination findings to document:

• Pain with weight-bearing but relief when lying suggests mechanical/articular pathology rather than inflammatory or infectious causes 3
• Assess gait pattern and ability to perform pivot transfers 4
• Perform FABER (flexion-abduction-external rotation) and FADIR (flexion-adduction-internal rotation) tests to distinguish intra-articular from extra-articular sources 5, 3

Next Steps Based on Radiograph Results

If Radiographs Show Osteoarthritis:

• The diagnosis is confirmed; proceed with conservative management (physical therapy, NSAIDs, assistive devices) 3
• Consider image-guided intra-articular corticosteroid injection for both diagnostic confirmation and therapeutic benefit (rated 8/9 appropriateness) 1
• Orthopedic referral for arthroplasty consideration if conservative measures fail and quality of life is significantly impaired 6

If Radiographs Are Negative or Equivocal:

• Order MRI hip without IV contrast (rated 9/9 appropriateness by ACR) to detect occult fractures, avascular necrosis, soft tissue pathology, or early arthritis 1, 2
• MRI is highly sensitive for detecting stress fractures and basicervical femoral neck fractures not visible on plain films 1
• MRI can also identify periarticular causes: trochanteric bursitis (most common lateral hip pain in elderly), gluteus medius tears, iliopsoas tendinopathy 1, 6

If Pain Pattern Suggests Referred Pain:

• Consider lumbar spine imaging if posterior hip/buttock pain with radiation down the leg 1, 5
• L3 radiculopathy can mimic hip pain but typically includes dermatomal sensory loss along medial lower leg 5
• Negative hip-specific tests (FABER, FADIR) effectively exclude intra-articular hip pathology and point toward nerve root pathology 5

Diagnostic Injection Strategy

Image-guided intra-articular hip injection serves dual purposes:

• Confirms hip joint as pain source versus surrounding structures or referred pain 1, 3
• Provides therapeutic benefit if osteoarthritis is present 1
• Can be performed under ultrasound or fluoroscopic guidance 7, 1

Critical Pitfalls to Avoid

• Never skip plain radiographs and proceed directly to advanced imaging – this violates standard diagnostic algorithms and may miss obvious pathology 1
• Do not assume chronicity excludes serious pathology – occult femoral neck fractures can present with normal initial radiographs in elderly patients and require MRI for diagnosis 1
• Failing to obtain both pelvis and hip views may miss important pathology such as acetabular abnormalities or contralateral hip disease 1
• Do not order bone scan, PET, or CT without contrast for this presentation – these are rated 1/9 appropriateness and provide less diagnostic information than MRI while exposing the patient to unnecessary radiation 1

What NOT to Do

• Avoid peripheral nerve blocks (obturator nerve) as they are experimental/investigational with insufficient evidence 1
• Do not proceed to MR arthrography unless there is specific clinical suspicion for labral tear or femoroacetabular impingement (unlikely in an 88-year-old with 5-year history) 7, 1
• Nuclear medicine techniques are not useful for evaluating chronic hip pain in this clinical scenario 7, 1

Age-Specific Considerations

In an 88-year-old patient, the differential diagnosis prioritizes:

1. Osteoarthritis (most common) 3, 2
2. Greater trochanteric pain syndrome (if lateral hip pain) 3, 6
3. Insufficiency fracture (must exclude) 1
4. Avascular necrosis (less common but serious) 2
5. Referred pain from lumbar spine (common in elderly) 5, 3
6. Malignancy (rare but must consider) 1