What is the glenoid labrum?
The glenoid labrum is a fibrocartilaginous structure that attaches to the glenoid fossa and acts like a rim. The labrum works to deepen the shoulder joint to help stabilize, resist anterior and posterior movements and help prevent shoulder subluxation and dislocations. The labrum deepens the socket so the head of the humerus fits better. Multiple structures attach to the labrum such as: biceps brachii long head tendon, and superior, middle and inferior glenohumeral ligaments.
Common Symptoms:
Instability in the shoulder
Clicking, popping, catching, locking
Discomfort and/or pain
Decreased strength
Decreased range of motion
Causes:
Injuries to the glenoid labrum can occur from repetitive motions or acute trauma. Examples of trauma include:
Sudden pull on the arm, like when lifting a heavy object or weight
Falling on an outstretched arm
Direct hit to the shoulder
Aggressive overhead reach
Repetitive motions are common with throwing athletes like baseball players and weightlifters.
Treatment:
Patients can perform nonsurgical treatment, including physical therapy. Oftentimes nonsurgical treatment can help alleviate symptoms and pain. If nonsurgical treatment does not help with symptoms, the patient’s Doctor may recommend surgery. Physical therapy treatment may include manual therapy, range of motion exercises, therapeutic exercises, modalities and patient education.
-Leanne Komoda, PT, DPT
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