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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.
Dislocated TMJs: Dislocation of the joint is indicated by popping and cracking noises when the jaw is opened or closed, and may negatively affect movement of the jaw and strain the musculature of the jaw, face, and neck. Clenching and grinding: Bruxism is one of the most common causes of TMJ disorders. The added stress on the jaw joint can cause wear and tear of the cartilage disks, and may cause the jaw joint to become dislocated.