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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.
A dislocated kneecap is an uncommon injury usually caused by a sudden change in direction when the leg is planted on the ground. It often happens during sports or dancing, but can also occur when getting out of a chair.It's mostly seen in teenagers. Normally, the kneecap (patella) sits over the front of the knee joint. It glides over a groove in the joint when you bend or straighten your knee.When the kneecap dislocates, it comes out of this groove and the supporting tissues can overstretch or tear. A dislocated kneecap should be treated promptly and investigated properly. It takes about six weeks to fully heal.t often happens during sports or dancing, but can also occur when getting out of a chair. It's mostly seen in teenagers. Normally, the kneecap (patella) sits over the front of the knee joint. It glides over a groove in the joint when you bend or straighten your knee.