3D Knee Bone Shape Predisposes to ACL Rupture: Data from the Osteoarthritis Initiative and the Kanon Study  M.A. Bowes, S. Lohmander, P.G. Conaghan, R. Frobell  Osteoarthritis and Cartilage  Volume 25, Pages S237-S238 (April 2017) DOI: 10.1016/j.joca.2017.02.404 Copyright © 2017 Terms and Conditions

Figure 1: Sammon Plot of male and female KANON knees vs KLO (including femur, patella and tibia bones) 200 male and 200 female knees were selected at random (see text for details) to produce a legible plot, and a single Sammon plot was prepared using 400 knees, plus the KANON group. Green line shows direction of animation used for shapes in Figure 2, drawn through the mean positions of the non-OA and KANON knees. Osteoarthritis and Cartilage 2017 25, S237-S238DOI: (10.1016/j.joca.2017.02.404) Copyright © 2017 Terms and Conditions

Figure 2: Some characteristic shape differences between Non-OA group and KANON group by bone. This figure shows some of the most striking differences for the femur, patella and tibia, being the shapes at the 95th percentile of the green dotted line in Figure 1. The femur notch is narrower in the KANON group, and the medial and lateral condyles are narrower. The attachments of the lateral ligament are anterior in the KANON group, suggesting a difference in femoral rotation. The lateral tibial plateau slopes upwards in the KANON group. The angle between the medial and lateral facets of the patella form a smaller angle in the KANON group. Red lines indicate the outlines of key features of the Non-OA shape for comparison, overlaid on the KANON shape. Osteoarthritis and Cartilage 2017 25, S237-S238DOI: (10.1016/j.joca.2017.02.404) Copyright © 2017 Terms and Conditions