Glenohumeral Joint Injury
Instability of the glenohumeral joint is a common disorder of the shoulder. Trauma, repetitive motions or frequent dislocations of the shoulder joint as a child or as an adult can lead to this condition. The glenohumeral joint is one of the most mobile joints in the human body. Because of this, what it gains in mobility it lacks in stability. The humerus or upper arm bone rests in the socket of the shoulder blade called the glenoid. Instability occurs when there is abnormal symptomatic motion of the glenohumeral joint, and can occur from many different possibilities. Sufferers of glenohumeral joint instability typically complain of “loose shoulder”, pain, soreness, and/or hypermobility. Symptoms typically worsen with specific arm movements, such as overhead activities, carrying heavy items, throwing a baseball or swimming.