The shoulder joint is the most movable joint in the body and allows the arm to move in any directions.Dislocations of the shoulder occur when the head of the humerus is located from its socket in the shoulder blade.
Symptoms: A visible deformed or out-of-place shoulder,swelling,intense painand inability to move the joint.
Diagnosis: A diagnosis of shoulder dislocation is often suspected based on patient history and physical examination. Radiographs are made to confirm the diagnosis. Posterior dislocations may be hard to detect on standard AP radiographs, but are more readily detected on other views. After repeated shoulder dislocations, an MRI scan may be used to assess soft tissue damage. Treament: Medical treatment should be done for suspected dislocation. Usually, the shoulder is kept in its current position by use of a splint or sling .A pillow between the arm and torso may provide support and increase comfort. Strong analgesics are needed to allay the pain of a dislocation and the distress associated with it.
Pathophysiology: Often caused by trauma, and 25% are associated with concurrent humeral fractures. Hill-Sachs and Bankart's lesions are possible sequelae of the dislocation if the humerus dislocates anteriorly. Rotator cuff tears are often found after dislocations, particularly in older adults. Some studies have shown up to 100% incidence of cuff tears in patients over 70 years of age. Epidemology: The shoulder is the most commonly dislocated joint in the body. Patients with a previous shoulder dislocation are more prone to redislocation. This occurs because the tissue does not heal properly and/or because the tissue stretches out and becomes more lax. Younger patients have a much higher frequency of redislocation than patients in their 50s and 60sMany physicians believe that age is less of a predisposing risk factor for redislocation than activity level.