A cartilage contusion is an injury caused by external violence acting on the cartilage such as hitting on a hard object after a fall or being hit by a hard object. A pressure injury to the cartilage in the knee joint after jumping from a high place is also called a cartilage contusion because of the uneven force on the knee after a poor landing position. Cartilage contusions can be of varying degrees of injury, either a subtle tear or a partial tear following the injury. Contusions can be localized with tissue fluid as well as blood leaking out, creating swelling as well as releasing pain-causing substances that trigger pain. When a cartilage contusion occurs, a cold compress should be applied quickly to reduce swelling and minimize the exudation of pain-causing substances, as well as oral medication to reduce swelling, and, if the injury is severe, medication to promote cartilage repair at a later stage.