Biceps Tendon Subluxation

Biceps Tendon Subluxation



Description


The biceps muscle attaches to bone via three tendons: two at the shoulder and one in the elbow. The long head of the biceps has a tendon that runs in a groove at the front of the shoulder before entering the shoulder joint. The groove is bordered on three sides by bone and is covered by the transverse humeral ligament. The biceps muscle is important for bending the elbow and rotating the wrist. It also plays a role in shoulder function. The tendon may move in and out of the groove; this is called biceps tendon subluxation, which rarely occurs without other shoulder problems. It is most often associated with a partial or complete tear of the subscapularis, one of the rotator cuff muscles.



Common signs and symptoms



• A “clunk” felt as the arm is rotated outward passively or inward against resistance

• Pain and occasional tenderness or swelling over the front of the shoulder

• Pain and clunking that are worse with shoulder and elbow motion, such as when bending the elbow and turning the palm up against resistance while turning the arm outward

• Crepitation (a crackling sound) when the shoulder is moved


Causes


Injury to the rotator cuff, either traumatic or degenerative, causes biceps tendon subluxation.



Factors that increase risk



• Contact sports, throwing sports, weight lifting, and bodybuilding

• Heavy labor

• Poor physical conditioning (strength, flexibility)

• Inadequate warm-up before practice or play
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Jul 18, 2016 | Posted by in SPORT MEDICINE | Comments Off on Biceps Tendon Subluxation

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