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MCP JOINT. The metacarpophalangeal (MCP) joint most commonly dislocated is that of the thumb. A simple dislocation involves no soft tissue obstruction, and reduction should be attempted. A complex dislocation involves intervening soft tissue (i.e., ligaments, musculature, or fascia) and requires surgical reduction.CP JOINT. The metacarpophalangeal (MCP) joint most commonly dislocated is that of the thumb. A simple dislocation involves no soft tissue obstruction, and reduction should be attempted. A complex dislocation involves intervening soft tissue (i.e., ligaments, musculature, or fascia) and requires surgical reduction.
The shoulder is actually the most commonly dislocated major joint. A subluxation is when the ball starts to come out of place but then immediately slips back. A dislocation is when the ball comes completely out of the socket, usually as the result of an injury. When the shoulder dislocates or subluxates, the stabilizing tissues of the shoulder (the labrum and capsule) are torn.