Tendonitis of the biceps

Tendonitis of the Long Head of the Biceps:

Long head of biceps tendonitis is an inflammation or irritation of the upper biceps tendon. This strong, cord-like structure connects the upper end of the biceps muscle to the bones in the shoulder.

Pain in the front of the shoulder and weakness are common symptoms of biceps tendonitis. They can often be relieved with rest and medication. In some cases, surgery is necessary to repair the tendon.
Biceps tendonitis usually occurs along with other shoulder problems. In most cases, there is also damage to the rotator cuff tendon. Other problems that often accompany biceps tendonitis include:

Arthritis of the shoulder joint
Tears in the glenoid labrum
Chronic shoulder instability
Shoulder impingement
Other diseases that cause inflammation of the shoulder joint lining.

In the early stages of biceps tendonitis, the tendon becomes red and swollen. As tendonitis develops, the tendon sheath (covering) can thicken. The tendon itself often thickens or grows larger.

The tendon in these late stages is often dark red in color due to the inflammation. Occasionally, the damage to the tendon can result in a tendon tear, and then deformity of the arm (a "Popeye" bulge in the upper arm).

In most cases, damage to the biceps tendon is due to a lifetime of overhead activities. As we age, our tendons slowly weaken with everyday wear and tear. This degeneration can be worsened by overuse — repeating the same shoulder motions again and again.

Swimming, tennis, and baseball and bodybuilding are some sports examples of repetitive overhead activities. Many jobs and routine chores can cause overuse damage as well.

Repetitive overhead motion plays a part in other shoulder problems that occur with biceps tendonitis. Rotator cuff tears, osteoarthritis, and chronic shoulder instability are often caused by overuse.