715.16, 715.26, 715.36, 715.96 Osteoarthritis 717.0 – 717.5 Meniscal cartilage derangement 717.7 Chrondromalacia of patella 717.81 – 717.9 Knee ligamentous disruption 727.65 Rupture of tendon, nontraumatic – quadriceps tendon 733.15 Pathologic fracture of femur ...