Biceps tendonitis is inflammation or irritation of the tendons that connect the biceps muscle to other structures in the arm and shoulder. While athletes are the most prone to the issue, anyone can develop it. Most cases of biceps tendonitis resolve fully with proper care, though some require surgery for complete recovery.

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1. Anatomy

The biceps is a large muscle on the front of the upper arm. A tendon connects the biceps to the scapula of the shoulder while another connects it to the radius bone of the elbow. Both of these tendons are susceptible to biceps tendonitis, though injuries of the upper tendon are more common.

arm anatomy xray Filip_Krstic / Getty Images
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