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  • Title: Quantitative analysis of hip dysplasia in cerebral palsy: a study of radiographs and 3-D reformatted images.
    Author: Abel MF, Wenger DR, Mubarak SJ, Sutherland DH.
    Journal: J Pediatr Orthop; 1994; 14(3):283-9. PubMed ID: 8006155.
    Abstract:
    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.
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