Keywords: Bone/Skeletal, Modelling
Motivation: Statistical shape models (SSMs) used to quantify musculoskeletal pathologies generally ignore correlations in shape and orientation across bones.
Goal(s): The goal of this study was to investigate alternative approaches for modeling bone shapes in subjects with and without patellofemoral instability (PFI).
Approach: Two models, one using combined point sets and the other using combined SSMs of the knee (femur, patella, and tibia), were created from MRI-based reconstructions and compared in terms of compactness, specificity, generalizability, and separability.
Results: The combined points model was more specific and general while the combined SSMs model showed better separability between control and PFI subjects.
Impact: Better characterization of the shapes and orientations of skeletal morphologies and their correlations could lead to improved diagnosis and more targeted treatments for musculoskeletal pathologies such as PFI.
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