developmental dysplasia of the hip
Also written as: DDH — developmental dysplasia of the hip
A condition where the hip joint forms abnormally, ranging from mild socket shallowness to complete dislocation.
Full Definition
Developmental dysplasia of the hip (DDH) encompasses a spectrum of hip abnormalities present at birth, ranging from mild acetabular dysplasia to frank dislocation of the femoral head. The condition was previously known as congenital hip dislocation, but the current terminology reflects that many cases develop after birth. DDH affects approximately 1-3 per 1,000 births and is more common in females, breech presentations, and first-born children. Early detection through physical examination and imaging is crucial, as treatment outcomes are significantly better when intervention occurs before walking age.
Usage
Usage note: Preferred term over 'congenital hip dislocation' in current medical literature.
In Context
- "Ultrasonography confirmed developmental dysplasia of the hip in the newborn with positive Ortolani sign." — Pediatric orthopedic consultation
- "Treatment of developmental dysplasia of the hip with Pavlik harness should begin before 6 months of age." — Clinical practice guideline