M25.2: Flail joint

Flail joint, classified under the ICD-10 code M25.2, is a medical condition where there is a loss of stability in a joint due to the disruption of surrounding structures, commonly due to injury or disease. This results in the affected joint moving freely in an abnormal or excessive manner, often resulting in considerable pain and difficulty in utilizing the associated limb. The condition can occur in any joint in the body but is most commonly seen in larger joints such as the shoulder, elbow, or knee. The manifestation of symptoms may include visible abnormalities in the way the joint moves, increased range of motion, persistent pain, and an inability to control movements properly. Disease progression varies based on the severity of structural damage, location of the flail joint, and if underlying causes are adequately addressed. While an uncommon condition, a flail joint can have significant effects on one's mobility and overall quality of life.