Abstract #4632

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

Jessica Marie Bugeja^1,2, Ying Xia¹, Shekhar Chandra², Nicholas Murphy^3,4, Stuart Crozier², David Hunter^3,5, 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

Synopsis

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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