Abel Mark F. M.D.; Wenger, Dennis R. M.D.; Mubarak, Scott J. M.D.; Sutherland, David H. M.D.Journal of Pediatric Orthopaedics: May-June 1994 Cerebral Palsy: PDF Only Buy Abstract Summary: Cerebral palsy patients (31 hips) were evaluated using radiographic and three-dimensional (3-D) images to quantify hip anatomy. The 3-D images overcome distortions caused by joint contractures. Changes were more pronounced in the non-ambulators and characterized by shallow sockets with increased neck-shaft angles. These hips tended to subluxate in a posterior-superior direction and most had defects in the femoral heads. Ambulators had increased femoral anteversion but other hip parameters tended to improve with age. The 3-D measures of roof steepness and socket depth were found to correlate strongly with radiographic parameters of subluxation. © Lippincott-Raven Publishers.