Cruciate ligament tears are often caused by dive bombing with carving skis. With a particular radius of curvature, the edge grip can cause the individual’s legs to be pulled apart on a slightly uneven surface, resulting in a fall. Tearing of the medial collateral ligament is usually in the area of the femoral insertion and is highly sensitive to pressure, even through clothing. Tearing of the anterior cruciate ligament does not manifest itself immediately. The descent is just about possible, the knee is painful and swelling increases. Medical attention is essential. The x-rays are normal, and a joint tap shows a bloody effusion. Joint stability can then be assessed and an anterior cruciate ligament tear is diagnosed – but what is the best approach to treatment?