Mylène Jansen

386 Chapter 18 Figure 5 : Trabecular bone density changes 1 (left) and 2 (middle) years after treatment with knee joint distraction, and 2 years compared to 1 year post-treatment (right), for patients with predominantly medial compartmental osteoarthritis (n=14). Statistically significant changes ( p< 0.05) are indicated by the unmasked regions. Bone shape Exploratory visual shape analyses showed similar general shape changes for both sides of the joint and both the femur and tibia, as seen in Figure 6: the central areas of both compartments showed an outward change (blue color), while the outer ring of both compartments showed inward changes (red color). This means the femoral condyles became more convex while the tibial condyles became less concave, which was the case between both time points, although the largest changes were seen between 1 and 2 years after treatment.