A 3-month-old girl with unilateral developmental dysplasia of the hip confirmed on ultrasound has been prescribed a Pavlik harness. What is the maximum age up to which the Pavlik harness is considered appropriate primary treatment?
- A 12 months
- B 9 months
- C 6 months ✓
- D 3 months
Correct answer: C. 6 months
Explanation
The Pavlik harness is effective primary treatment for DDH up to approximately 6 months of age, while the proximal femoral physis is cartilaginous and the hip capsule lax enough for gradual remodeling. Beyond this age, closed or open reduction under anesthesia becomes necessary. The harness must hold the hip in flexion over 90 degrees but avoid forced abduction, because forced abduction risks avascular necrosis of the femoral head, the feared harness complication.
Reference: Tachdjian's Pediatric Orthopaedics, 5th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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