Osteochondritis dissecans can lead to the mobility and even partial or total detachment of a fragment of bone and cartilage from the femoral joint surface. According to the age of the patient, as well as the condition and mobility of the fragment, different surgical treatments are possible to relieve the pain and limit the risk of the subsequent onset of osteoarthritis. These treatments include deep cartilage drilling or reattachment of the mobile fragment, as well as more complex procedures such as bone and cartilage grafts or even grafts of cartilage cells grown in a laboratory…