Abstract
The biceps brachii muscle is prone to variants but absence of the long head of the biceps (LHB) tendon is an exceptionally rare anomaly. This report concerns the fourth case of bilateral congenital absence of the LHB tendon and presents the ultrasonography (US) and magnetic resonance (MR) findings. Our case has the peculiarity of being the first in which bilateral LHB tendon agenesis is not associated with rotator cuff or labral tears.
Highlights
Absence of the long head of the biceps (LHB) tendon is a very unusual anomaly
We report the fourth case of bilateral congenital absence of the LHB tendon in the English literature
Case Reports in Radiology nonskeletal congenital anomalies in 57% of cases [1, 4,5,6], including at least one case associated with VATER complex [4]
Summary
1. Introduction Absence of the long head of the biceps (LHB) tendon is a very unusual anomaly. We report the fourth case of bilateral congenital absence of the LHB tendon in the English literature. A 29-year-old male, Muay Thai amateur fighter, presented with right anterior shoulder pain at rest that exacerbated with overhead activities. He had no symptoms in the left shoulder.
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