M23: Internal derangement of knee

M23.8: Other internal derangements of knee

The condition cited, "Other internal derangements of knee," usually involves a disorder or dysfunction within the knee joint. Commonly, it results from an injury or trauma that causes damage to the internal structures of the knee. Key features of these derangements may encompass damage to the menisci (cushion-like discs in the knee), injury to the ligaments (bands that connect bones), or issues affecting the tendons (bands that connect muscles to bones). Typical signs and symptoms are pain, swelling, difficulty in bending or straightening the knee, and a sensation of the knee giving way. The severity and type of symptoms can depend on which part of the knee is affected and the extent of the injury. Over time, if left untreated, this condition could lead to knee instability and potential further knee damage.