The biceps muscle has two tendons in the shoulder - the long head of biceps tendon (LHB) and short head tendon (see image).
The LHB is the most commonly affected tendon in biceps problems.
The biceps tendon is a common cause of pain at the front of the shoulder. This is known as biceps tendonitis.
Sometimes the LHB tendon in the shoulder may rupture and result in a bunching of the biceps in the upper arm, known as a 'popeye biceps' appearance.
Ruptured right LHB with Popeye sign biceps (arrow)
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