This patient had a knee replacement for severe osteoarthritis about a year ago. Post-surgery it got infected. The patient had severe acute and chronic oateomyelitis and a large non-healing wound (shown in second pic). After about 9-10 months of issues with this, the patient had the hardware from the knee replacement removed in an attempt to resolve the infection. This did not work and so unfortunately the patient had to have an above the knee amputation shown here. My 💣 PA student did this bisection using our band saw. Gorgeous cross section! 😍🤓 if you look at the knee joint (zoom on first pic or look at last pic) you can see that the femoral condyles and the tibial plateau were shaved off during the original surgery so that the joint replacement could be put in. Since they removed that, you can see the knee joint does not articulate properly, hence why this patient used a wheelchair.