Dislocations - full proof shift of articulate surfaces of bones for limits of physiological norm. Thus integrity of an articulate bag is always broken. Incomplete shift name a subluxation. Distinguish traumatic, habitual, pathological dislocations.

The traumatic dislocation arises at a strong mechanical trauma of a joint. Compound dislocations at which there is a wound in the field of a joint are observed closed and more serious on current and the forecast.

Signs, current: a pain in a joint, impossibility of active and passive movements in itself and disturbance of its configuration. Serious complication of a dislocation can be damage of nearby blood vessels or nerves. If the dislocation is not set within the first 2 hours after a trauma, it name chronic. Its treatment (especially diaplasis) can represent a difficult problem. The compound dislocation can become complicated a purulent arthritis.

The habitual dislocation quite often happens at the premature termination of an immobilization after diaplasis of the first dislocation and is expressed in often arising dislocations in a joint even at a small trauma. The most frequent localization - a humeral joint.

The pathological dislocation comes as a result of destruction of a joint by any pathological process (a tuberculosis, an osteomyelitis). It is more often observed at children. The extremity lags behind in body height, excessive mobility (looseness) in a joint is characteristic.