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. 1994 Jan-Feb;14(1):48-53.
doi: 10.1097/01241398-199401000-00011.

Evaluation of CT scans and 3-D reformatted images for quantitative assessment of the hip

M F Abel  1 , D H Sutherland, D R Wenger, S J Mubarak
Affiliations

Evaluation of CT scans and 3-D reformatted images for quantitative assessment of the hip

M F Abel et al. J Pediatr Orthop. 1994 Jan-Feb.

Abstract

Hip measurements using three-dimensional (3-D) images and computed tomography (CT) scans were evaluated. The 3-D measurements proved more accurate than CT measurements of femoral and acetabular anteversion. Additionally, accurate 3-D measurements (> 99%) of the femoral neck-shaft angle were provided. Acetabular anteversion determinations by CT scans were systematically decreased as pelvic flexion increased, whereas accuracy was > 96% with 3-D images. The 3-D software allows image rotation in all three reference planes, which minimizes positional errors. A case study is provided to exemplify the shortcomings of conventional imaging techniques and the utility of the quantitative 3-D protocol.

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