Quantitative analysis of hip dysplasia in cerebral palsy: a study of radiographs and 3-D reformatted images.
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 anterversion 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.
Abel
M F
MF
Department of Orthopaedic Surgery, University of Virginia, Charlottesville.
Wenger
D R
DR
Mubarak
S J
SJ
Sutherland
D H
DH
D000077:Acetabulum / Q000473:pathology; D000293:Adolescent; D002547:Cerebral Palsy / Q000150:complications*; D002648:Child; D002675:Child, Preschool; D005270:Femur Head / Q000473:pathology; D006617:Hip Dislocation / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008124:Locomotion; D014057:Tomography, X-Ray Computed