An hourglass biceps tendon refers to severe enlargement of the intra-articular portion of the biceps tendon which can entrap inside joint during flexion and become symptomatic. It can be associated with accumulation of fluid in tendon sheath within the bicipital groove.
- 1. Boileau P, Ahrens PM, Hatzidakis AM. Entrapment of the long head of the biceps tendon: the hourglass biceps-a cause of pain and locking of the shoulder. J Shoulder Elbow Surg. 2004;13 (3): 249-57. Pubmed citation