Overview
The biceps ends in a single cord of tendon that anchors to the radial tuberosity, a bump on the radius just below the elbow. When it tears off the bone, usually during a heavy lift with the elbow bent, the muscle retracts up the arm and two movements weaken: bending the elbow and turning the palm up. The second matters more than most people expect: supination strength drops by roughly 40%, which shows up turning a screwdriver, opening a jar, or pulling a line on a boat.
Distal biceps repair reattaches the tendon to the tuberosity so it can heal back to bone. Done within a few weeks of injury, it restores flexion and supination strength close to the other side, and it is done as an outpatient at Bayside Surgery Center in Coconut Grove.
Who It's For
Repair is recommended for a complete distal biceps tear in anyone who needs the arm for lifting, sport or manual work, and Dr. O'Donnell advises operating within two to three weeks. After that the tendon retracts and scars, and a straightforward reattachment can turn into a reconstruction with a graft.
Not every tear needs surgery. An older, sedentary patient comfortable with a weaker arm can be treated with rest and strengthening; the elbow still bends well because the brachialis does most of that work, and the main permanent loss is supination power. Partial tears are treated with rest and therapy first and repaired when pain persists. Chronic tears months old can still be treated but usually need a graft, with a longer and less predictable recovery.
An MRI report of a biceps tendon tear does not on its own decide the treatment. Dr. O'Donnell recommends repair when the hook test, the loss of supination strength and the imaging all confirm a complete tear, and the patient needs the strength the repair restores; a partial tear is treated with rest and therapy first. See the distal biceps tear page for how the tear is graded.
What the Procedure Involves
Surgery takes about an hour under a regional nerve block with general anesthesia or sedation. Dr. O'Donnell uses a single incision in the crease at the front of the elbow. The retracted tendon end is found, trimmed to healthy tissue and prepared with strong sutures; the radial tuberosity is cleared of tendon fragments and the tendon is pulled down to its original footprint.
Fixation is with a cortical button, a small metal button passed through a drill hole in the radius that flips and locks on the far side, and the tendon is tensioned down to bone through it. An interference screw can be added for extra hold. Button fixation is the strongest option in laboratory testing, which is why it is the default; suture anchors alone are reserved for revisions or unusual bone. A two-incision technique, with a second cut on the back of the forearm, reduces nerve exposure but carries a higher rate of bone forming between radius and ulna, so it is used selectively.
The elbow goes into a hinged brace at about 90° and you go home the same day; fingers, wrist and shoulder move freely from the first evening.
Risks & How They Are Minimized
The nerve most at risk is the lateral antebrachial cutaneous nerve, which supplies skin on the outer forearm and runs under the incision. Numbness there is the most common complication and usually settles over months; the nerve is identified and protected throughout. The posterior interosseous nerve wraps around the radius near the tuberosity and can be irritated by retractors or the drill, so the forearm is held fully supinated during drilling to move the nerve away from the bone.
Re-rupture is uncommon and almost always follows a forceful contraction before six weeks; the brace and the ban on resisted flexion protect against it. Heterotopic ossification, bone forming between radius and ulna, can limit rotation; it is minimized by gentle tissue handling, washing out bone debris after drilling, and starting rotation early. Stiffness is avoided by the brace schedule, which reaches full extension by about six weeks. Infection is rare and covered by a pre-incision antibiotic. Blood clots after arm surgery are uncommon and need no routine medication.
Recovery & Rehabilitation
The repair has to heal to bone before it can be loaded. A hinged brace limits terminal extension at first and is opened about 10° per week, so the tendon is not stretched before it has healed while the elbow keeps moving.
| Phase | Timing | What happens |
|---|---|---|
| Protection | Weeks 0–2 | Hinged brace with extension limited. Active-assisted flexion within the brace, unresisted forearm rotation, shoulder, wrist and hand motion. No resisted flexion or supination. |
| Progressive motion | Weeks 2–6 | Extension advanced per the brace schedule to full by about week 6. Active, unresisted elbow and forearm motion; scar management. |
| Strengthening | Weeks 6–12 | Light resisted flexion and supination begin at 6–8 weeks and progress gradually; grip and forearm strengthening, endurance work. |
| Return to activity | Months 3–5 | Advanced strengthening, sport- or job-specific progression. Heavy lifting and sport typically at 4–5 months, once strength is symmetric. |
Desk work is possible within the first week with the brace on; driving at two to three weeks, once you are off narcotic pain medication and can extend enough to steer. No lifting with the operative arm for about three months, and full lifting, climbing and contact sport at four to five months.
Protocol summary
The precautions protect a tendon healing to bone: a hinged elbow brace with terminal extension protected and advanced at about 10° per week, no resisted elbow flexion or forearm supination for six to eight weeks, no lifting with the operative arm for about three months, and no sudden or forceful elbow extension. Motion inside those limits starts on day one.
Each phase is entered on criteria: comfort within the allowed range to begin advancing extension, near-full extension with full active flexion to begin strengthening at six weeks, and full motion with improving strength to begin return to activity at three months. Symmetric strength is the criterion for heavy lifting and sport at four to five months; Dr. O'Donnell slows the schedule when tissue quality or fixation at surgery calls for it.
Physical Therapy Protocol
Distal Biceps Tendon Repair PDF ↗Frequently Asked Questions
How soon after a distal biceps tear does surgery need to happen?
Ideally within two to three weeks, while the tendon can still be pulled back to its footprint and reattached directly. After about six weeks the muscle shortens and the tendon scars, and the repair may need a graft to bridge the gap. Dr. O'Donnell sees suspected biceps ruptures the same week for this reason.
Can a distal biceps tear heal without surgery?
The tendon does not reattach to bone on its own. Without surgery the elbow still bends, because the brachialis does most of that work, but supination strength stays down by roughly 40% and endurance drops further. That is acceptable for some sedentary patients and a poor result for anyone who lifts, climbs, sails or works with their hands.
How long do I wear the brace after distal biceps repair?
About six weeks. The hinged brace starts with extension blocked and is opened roughly 10° each week until the elbow straightens fully. You take it off for hygiene and exercises. After six weeks it comes off, but resisted lifting and forceful supination are still prohibited until strengthening is cleared, and there is no lifting with that arm for about three months.
When can I drive and return to work after biceps tendon surgery?
Desk work is fine within the first week with the brace on. Driving is usually possible at two to three weeks, once you are off narcotic pain medication and the brace allows enough extension to steer. Manual work that involves lifting waits for the strengthening phase; heavy work and sport typically come at four to five months per the protocol.
Will my arm be as strong as before after repair?
After a prompt repair and full rehabilitation, flexion and supination strength typically return close to the uninjured side, and most patients get back to full lifting and sport. Repairs done months after the injury, or with a graft, recover less predictably.
This page is for general education and is not a substitute for a medical evaluation. The right procedure depends on your individual diagnosis, anatomy, 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.