Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooBiceps Tendonitis of the Shoulder

Neck & Shoulder

What It Is

Biceps tendonitis is an irritation or inflammation of the upper biceps tendon, also called the long head of the biceps tendon (AAOS, n.d.a). This strong, cord-like structure connects the upper end of the biceps muscle to the shoulder socket. Pain in the front of the shoulder and weakness when moving the shoulder are some of the common symptoms associated with biceps tendonitis. These problems can often be eased with rest and medication. In severe cases (e.g. when the tendon tears), surgery may be needed.

Research on tendons removed during surgery suggests that, in longer-standing cases, the problem is mainly wear and tear (degeneration) of the tendon rather than ongoing inflammation (Simon et al., 2022). Biceps tendonitis usually occurs along with other shoulder problems, such as rotator cuff wear or tears, arthritis of the shoulder joint, tears in the labrum (the rim of cartilage around the shoulder socket) or repeated dislocations (AAOS, n.d.a).

Biceps Tendonitis of the Shoulder Anatomy

The shoulder is a ball and socket joint. The socket is part of the shoulder blade, and the ball is the top of the upper arm bone. There are many muscles surrounding the shoulder which give the shoulder stability and strength.

The biceps muscle is found in the front of the upper arm. It helps to bend the elbow and turn the forearm, and also helps to steady the shoulder. To find the muscle, simply bend your arm and look for the bulge of the muscle contraction. The biceps muscle has two tendons that attach it to the shoulder blade. The long head attaches to the top of the shoulder socket (the glenoid), which is lined with soft cartilage that helps the head of the upper arm bone fit in the socket. The short head attaches to a bump on the front of the shoulder blade called the coracoid process (AAOS, n.d.a).

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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