Overview
The long head of the biceps runs up through a groove in the front of the humerus, turns inward across the top of the shoulder joint and anchors to the labrum. That path exposes it to friction, pinching under the acromion, and the pull of every overhead motion. It can become inflamed (tendinitis), fray, slip out of its groove, or rupture outright, and it rarely fails alone: most long-head problems occur together with rotator cuff tears, labral tears or impingement.
Treatment turns on whether the tendon is inflamed or structurally damaged, what else is wrong in the shoulder, and how much the patient asks of the arm. A tennis player with an irritable but intact tendon and a 60-year-old with a complete rupture and a bulge in the upper arm are both biceps problems, and the second often needs less treatment than the first.
Common Symptoms
- Aching pain at the front of the shoulder, over the bicipital groove, that can radiate down the front of the upper arm
- Pain with overhead reaching, lifting with the palm up, and pulling movements such as rowing
- A snapping or catching at the front of the shoulder with rotation, which suggests the tendon is slipping out of its groove
- After a complete rupture, a pop, bruising, and a “Popeye” bulge low in the upper arm, often with relief of the previous ache
Front-of-shoulder pain with palm-up lifting points to the biceps. Pain on the outside of the arm with weakness lifting sideways points to a rotator cuff tear; a painful arc with overhead reaching and a strong arm is more typical of impingement and bursitis; deep pain with catching in a thrower is often a SLAP tear at the biceps anchor itself.
Causes & Risk Factors
Repetitive overhead loading is the usual driver: tennis serving, swimming, baseball, CrossFit, and work above shoulder height. Under 40 the tendon is usually irritated by mechanics, either impingement or an unstable biceps anchor. After 50 it degenerates from within and can rupture with an ordinary load such as lifting a suitcase, nearly always in a tendon that was already diseased and often in a shoulder with an existing cuff tear. A torn subscapularis lets the long head slip out of its groove.
How It Is Diagnosed
Dr. O'Donnell palpates the bicipital groove for point tenderness and performs Speed's test (resisting forward elevation with the palm up) and Yergason's test (resisting supination of the forearm), both of which reproduce groove pain when the tendon is inflamed. He checks for the tendon subluxing with rotation, tests the subscapularis with the belly-press and lift-off tests, and performs O'Brien's test for a labral tear at the anchor. A Popeye deformity makes a complete rupture obvious on inspection.
X-rays are taken to look for spurs, calcification in the groove and arthritis. Ultrasound is particularly useful for this tendon: it shows fluid in the sheath, thickening, partial tearing and whether the tendon subluxes as the arm rotates, and it guides injections precisely into the sheath. MRI is ordered when the exam suggests a cuff or labral tear alongside the biceps, or when symptoms have not settled after six to eight weeks, because those associated injuries change the operative plan. Existing imaging can be uploaded through mymedicalimages.com before a visit.
Treatment Options
Non-operative care
Tendinitis in an intact tendon is treated without surgery first, and most cases settle. Overhead and palm-up loading is reduced for a few weeks, and physical therapy restores motion, stretches a tight posterior capsule and strengthens the cuff and shoulder-blade muscles so load on the front of the shoulder is reduced. When pain blocks progress, Dr. O'Donnell places a corticosteroid injection into the tendon sheath under ultrasound guidance. Most patients improve over six to twelve weeks. A complete rupture in a patient over 50 is also usually left alone: the short head and brachialis do most of the work, the ache resolves, and the bulge is the only lasting consequence.
Biceps tenodesis
Biceps tenodesis releases the long head from its anchor and fixes it to the humerus lower down, out of the joint and out of the groove, which removes the source of pain while preserving the muscle's length and shape. Dr. O'Donnell recommends it when tendinitis has failed a proper course of therapy and injection, when the tendon is subluxing or more than about half torn, and for younger or active patients with an acute rupture who want their strength and contour back. It is often added to a rotator cuff repair when the biceps is found damaged, and it is the preferred treatment for SLAP tears over about 35. The alternative, tenotomy, simply cuts the tendon; it is quicker but leaves a Popeye bulge and some cramping, and is reserved for older, less active patients. Surgery is performed as an outpatient at Bayside Surgery Center.
Recovery & What to Expect
After tenodesis the fixation has to be protected from the one thing the biceps does, bending the elbow and turning the palm up, until it has healed to bone. Shoulder motion is restored in parallel so the shoulder does not stiffen.
| Phase | Timing | What happens |
|---|---|---|
| Protection | Weeks 0–4 | Sling except for exercise. Pendulums and passive shoulder flexion and external rotation within comfort. Elbow moved passively only; no active or resisted elbow flexion or forearm supination, no biceps stretch. |
| Active motion | Weeks 4–8 | Sling discontinued. Full active shoulder motion; unresisted active elbow and forearm motion; scapular and cuff isometrics. No resisted biceps work until 6 to 8 weeks. |
| Strengthening | Weeks 8–12 | Progressive rotator cuff and scapular strengthening; graded biceps curls and supination introduced. Advance at 80% strength of the other side. |
| Return to activity | Months 3–4 | Advanced strengthening and sport- or job-specific progression. Full activity on symmetric strength and painless function. |
Desk work is possible within a few days, driving once the sling is off at 2 to 4 weeks, and overhead sport, climbing and heavy lifting at 3 to 4 months. Patients whose tenodesis is part of a rotator cuff repair follow the slower cuff timeline instead. The full protocol is available as a PDF: Arthroscopic Biceps Tenodesis rehabilitation protocol.
Frequently Asked Questions
Can biceps tendinitis heal on its own?
Usually, provided the overhead and palm-up loading that started it is reduced for a few weeks and the mechanics behind it are corrected. Most patients are comfortable within 6 to 12 weeks of therapy, with an ultrasound-guided injection into the tendon sheath if pain is holding progress back. A tendon that is subluxing or structurally torn does not heal by itself.
Do I need surgery for a torn biceps tendon at the shoulder?
Often not. A complete rupture of the long head in a patient over 50 leaves a bulge but only a small loss of strength, and the ache usually resolves once the tendon has let go. Tenodesis is offered to younger and active patients who want strength and contour back, and to anyone whose rupture comes with a cuff or labral tear that needs repair anyway.
What is the difference between biceps tenodesis and tenotomy?
Both release the long head from its painful anchor inside the joint. Tenodesis then re-fixes the tendon to the humerus, preserving the muscle's length, strength and shape at the cost of 6 to 8 weeks protecting the fixation. Tenotomy leaves the tendon cut, recovers faster, and produces a Popeye bulge and sometimes cramping. Dr. O'Donnell uses tenodesis for most patients.
Will the Popeye bulge go away?
Not without surgery. The bulge is the biceps muscle bunching up after its long-head tendon has retracted. It is harmless and does not enlarge, and many patients accept it. If the appearance or cramping bothers you and the rupture is recent, tenodesis can restore the normal contour.
How long until I can lift weights after biceps tenodesis?
No resisted elbow flexion or forearm rotation for 6 to 8 weeks while the tendon heals to bone. Light curls begin around week 8, progressive loading through week 12, and full weight training and overhead sport at 3 to 4 months once strength matches the other arm.
This page is for general education and is not a substitute for a medical evaluation. Treatment recommendations depend on your individual diagnosis and goals. Kevin O'Donnell, MD sees patients from Coral Gables, Miami, Brickell, Pinecrest and Coconut Grove at 475 Biltmore Way, and out-of-town patients by telemedicine.