hip dysplasia
Developmental abnormality of the hip joint in infants, typically diagnosed through ultrasound screening in the first months of life.
Full Definition
Hip dysplasia, more precisely termed developmental dysplasia of the hip (DDH), encompasses a spectrum of hip joint abnormalities ranging from mild acetabular dysplasia to complete hip dislocation. This condition is most common in newborn girls and those with breech presentation or family history. Ultrasound is the primary imaging modality for diagnosis in infants under 4-6 months of age, using the Graf classification system to assess hip morphology and stability. After ossification of the femoral head, plain radiographs become the preferred imaging method. Early detection and treatment are crucial to prevent long-term complications.
Usage
Usage note: Avoid the outdated term 'congenital hip dislocation' in favor of DDH.
In Context
- "Ultrasound screening revealed mild hip dysplasia requiring close monitoring." — Pediatric orthopedic consultation
- "The Graf classification indicated Type IIa hip dysplasia on the left side." — Hip ultrasound report