Biceps Tendinitis

Overview

Biceps tendinitis is inflammation or irritation of the biceps tendon, which connects the biceps muscle of the upper arm to the shoulder. The long head of the biceps tendon runs through a groove at the top of the arm bone and into the shoulder joint, where it is exposed to repeated stress with arm and shoulder movement.

Over time, especially with repetitive overhead activity or age-related wear, this tendon can become irritated and painful. Biceps tendinitis often occurs alongside other shoulder problems, such as rotator cuff irritation or impingement. Most cases improve with rest, activity changes, and physical therapy, although more stubborn cases may need additional treatment.

Symptoms

Symptoms usually develop gradually and center on the front of the shoulder. They include:

• Pain at the front of the shoulder that may spread down the upper arm.
• Pain that worsens with overhead activity or lifting.
• Tenderness along the front of the shoulder.
• An aching that may be worse at night or when lying on the affected side.
• A snapping or catching sensation in some cases.
• Weakness when bending the elbow or lifting.

If the tendon tears, some people notice a sudden pop, a bruise, or a bulge in the upper arm, which should be evaluated.

Causes

Biceps tendinitis usually results from repeated stress or gradual wear on the tendon. Common causes and contributors include:

• Repetitive overhead motion: From sports such as swimming, tennis, or throwing, or from jobs and hobbies involving overhead work.
• Age-related changes: The tendon naturally weakens and frays over time.
• Other shoulder problems: Such as rotator cuff syndrome or shoulder impingement, which often occur together.
• Sudden increase in activity or heavy lifting.

Because the biceps tendon shares the shoulder with other structures, irritation in one often affects the others.

Risk Factors

• Sports or work involving repetitive overhead arm motion
• Older age, with natural tendon wear
• Existing shoulder conditions, such as rotator cuff problems or impingement
• Poor shoulder mechanics or muscle imbalance
• Sudden increases in training or lifting

Diagnosis

Diagnosis is based on the history and a physical examination, sometimes with imaging.

• Physical examination: Checking for tenderness over the biceps tendon and pain with specific movement and resistance tests.
• Assessment of the whole shoulder: Since biceps tendinitis often accompanies rotator cuff or impingement problems.
• Imaging: Ultrasound or MRI may be used to look at the tendon and rule out tears or other shoulder injuries, and X-rays can show bone changes.

Treatment

Most cases respond well to nonsurgical care aimed at calming the irritation and restoring strength and motion.

• Rest and activity changes: Avoiding the movements that aggravate the tendon, at least temporarily.
• Ice: To reduce pain and inflammation.
• Pain relief: Anti-inflammatory medicines can help short term.
• Physical therapy: Stretching and strengthening exercises to restore motion, improve shoulder mechanics, and prevent recurrence.
• Injections: In some cases, a corticosteroid injection may be considered.
• Surgery: Rarely needed, and usually reserved for severe, persistent cases or significant tears.

A key part of recovery is gradually returning to activity rather than stopping all movement, since the tendon needs controlled loading to heal and stay strong. A physical therapist can guide a step-by-step program and correct movement habits that contributed to the problem. Recovery time varies, but many people improve over several weeks to a few months with consistent treatment, and addressing related shoulder problems at the same time improves the result.

Prevention

• Warm up before sports and overhead activity
• Build shoulder and upper-body strength gradually
• Use good technique for lifting and overhead tasks
• Avoid sudden large increases in training load
• Rest and address shoulder pain early before it worsens

When to See a Doctor

See a doctor if shoulder pain lasts more than a couple of weeks, limits your daily activities, or does not improve with rest. Seek prompt evaluation if you have:

• A sudden pop with bruising or a visible bulge in the upper arm, which may signal a tendon tear
• Significant weakness in the arm
• Severe pain or marked loss of shoulder motion
• Pain following a fall or injury

Related Topics

Frequently Asked Questions

References

1. American Academy of Orthopaedic Surgeons (OrthoInfo). Biceps Tendinitis.
2. Mayo Clinic. Tendinitis — Symptoms and causes.
3. MedlinePlus, U.S. National Library of Medicine. Tendinitis.
4. StatPearls, National Library of Medicine. Biceps Tendinitis.