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Abstract #4632

Focused shape model assessment of cam-type femoroacetabular impingement: 3D MR cam morphology visualizations with associated surgical reviews

Jessica Marie Bugeja1,2, Ying Xia1, Shekhar Chandra2, Nicholas Murphy3,4, Stuart Crozier2, David Hunter3,5, Jurgen Fripp1, and Craig Engstrom6
1AEHRC, CSIRO, Brisbane, Australia, 2School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, Australia, 3Institute of Bone and Joint Research, University of Sydney, Sydney, Australia, 4Department of Orthopaedic Surgery, John Hunter Hospital, Newcastle, Australia, 5Department of Rheumatology, Royal North Shore Hospital, St Leonards, Australia, 6School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Australia


Evaluating hip shape change with statistical shape models (SSMs) has been reported as a biomarker for OA incidence, progression and end-stage outcomes. However, there have been few MR studies using 3D SSMs for assessing proximal femur shape, encompassing the femoral head-neck region, in patients with conditions such as FAI. To the best of our knowledge, we present the first study to use focused shape models from 3D MR hip images to assess a focal region of (clinical) interest for cam morphology evaluation in patients classified as having an ‘inadequate’, ‘borderline’ or ‘satisfactory’ surgical outcome as determined from expert surgical review.

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