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A dislocated shoulder is a condition in which the head of the humerus is detached from the glenoid fossa. [2] Symptoms include shoulder pain and instability. [ 2 ] Complications may include a Bankart lesion , Hill-Sachs lesion , rotator cuff tear , or injury to the axillary nerve .
Dislocations are often caused by sudden trauma on the joint like an impact or fall. A joint dislocation can cause damage to the surrounding ligaments, tendons, muscles, and nerves. [2] Dislocations can occur in any major joint (shoulder, knees, etc.) or minor joint (toes, fingers, etc.). The most common joint dislocation is a shoulder ...
In a typical case of a dislocated shoulder, a strong force that pulls the shoulder outward (abduction) or extreme rotation of the joint pops the ball of the humerus out of the shoulder socket. Dislocation commonly occurs when there is a backward pull on the arm that either catches the muscles unprepared to resist or overwhelms the muscles.
The lesion is associated with anterior shoulder dislocation. [1] When the humerus is driven from the glenoid cavity , its relatively soft head impacts against the anterior edge of the glenoid . The result is a divot or flattening in the posterolateral aspect of the humeral head , usually opposite the coracoid process .
Shoulder reduction is the process of returning the shoulder to its normal position following a shoulder dislocation.Normally, closed reduction, in which the relationship of bone and joint is manipulated externally without surgical intervention, is used.
Acromioclavicular joint dislocation is a common injury to the shoulder and is occurs most often in athletes. [5] This injury has a higher prevalence in men compared to women and approximately 5 men for every 1 women experience this type of injury. [ 5 ]
Anterior shoulder dislocation often is a result of a blow to the shoulder while the arm is in an abducted position. In younger people, these dislocation events are most commonly associated with fractures on the humerus and/or glenoid and can lead to recurrent instability.
A Bankart lesion is a type of shoulder injury that occurs following a dislocated shoulder. [3] It is an injury of the anterior ( inferior ) glenoid labrum of the shoulder. [ 4 ] When this happens, a pocket at the front of the glenoid forms that allows the humeral head to dislocate into it.