What is a dislocation?

A dislocation is specifically defined as the complete loss of contact between the articular surfaces of a joint. This occurs when the bones of the joint are displaced from their normal anatomical position, leading to immobility and significant pain. The structure of the joint—formed by the ends of bones and the surrounding soft tissue—is disrupted, which affects the function and stability of the joint.

In contrast, a partial loss of contact refers to a sprain or a subluxation, where the joint surfaces are not entirely misaligned. A partial tear of a ligament does not describe dislocation but rather indicates an injury in which the ligament is stretched and partially torn. Lastly, the separation of a tendon from its bony attachment involves a disruption of the tendon itself rather than a dislocation of the joints.

Understanding the distinction between these definitions is crucial for diagnosing musculoskeletal injuries properly.