Chronic hip subluxation most common occurs in pediatric patients with neuromuscular disorders (e.g. cerebral palsy). It is considered a form of developmental hip dysplasia.
Epidemiology
Chronic hip subluxation occurs in ~45% of cerebral palsy patients who are not walking by 5 years of age 3.
Radiographic features
Plain radiograph
Features include 1:
-
lateral uncovering of the femoral head by the acetabulum
can be quantified by extrusion/hip migration index 4
complete hip dislocation
Unable to process the form. Check for errors and try again.