Procedure
Distal biceps tendon repair
Anatomic re-attachment of a ruptured distal biceps tendon back to the radial tuberosity at the elbow. A single anterior incision technique with cortical button fixation. Best results come from operating early, within two to three weeks of injury.
Indications
When distal biceps repair is the right operation
Without surgery, a complete distal biceps rupture leaves the arm permanently weaker. Supination strength drops by around 40 percent and elbow flexion strength by around 30 percent. For active patients those losses matter, so repair is the recommended treatment. Surgery is considered when:
- A complete acute rupture in an active patient. The standard indication. Early anatomic repair restores normal strength and function.
- A high-grade partial tear with weakness or persistent pain. Particularly when symptoms have not settled with rest and activity modification.
- A late presentation in a patient who still wants strength back. Late repair beyond six weeks is more complex and may require a tendon graft, but is still worthwhile in motivated patients.
- Manual workers and sportspeople. Anyone whose occupation or activities depend on supination strength benefits most from early repair. Tradespeople, weightlifters, and racquet-sport players are typical examples.
Non-operative treatment is reasonable for older patients with modest functional demand, or when medical comorbidities make surgery higher risk. The arm continues to work after a non-operated rupture, but is permanently weaker for tasks that require turning the palm up against resistance, such as using a screwdriver, opening a tight jar, or carrying a heavy bag.
How it works
How the repair holds the tendon to the bone
The distal biceps normally inserts onto the radial tuberosity, a bony bump on the front of the radius. When the tendon ruptures it detaches from the tuberosity and the muscle belly retracts up the arm. The goal of repair is to bring the tendon back to the tuberosity and hold it there while it heals to the bone.
Fixation is done with a cortical button. The cortical button is a small metal toggle on a strong suture loop. A tunnel is drilled through the radius at the tuberosity, the suture loop is passed through with the tendon tied to it, and the button flips on the far cortex of the bone to hold the tendon down onto the footprint.
The fixation is strong enough at time zero to allow gentle range of motion within the first few days. The tendon then heals back to the bone over the following months as the body lays down new fibres of attachment.
The procedure
What happens in the operating theatre
The procedure is performed under general anaesthetic, usually with a regional nerve block to help with pain control after surgery. The patient lies supine with the arm out on an arm board, and the operative arm is prepped and draped free. A tourniquet is used to minimise bleeding.
A small longitudinal incision is made just distal to the elbow. The retracted tendon is identified and brought back down to length. Occasionally a second incision over the biceps muscle is required when the tendon has retracted a long way. The radial tuberosity is exposed with the forearm in supination, which protects the posterior interosseous nerve by rotating it away from the operative field.
A tunnel is drilled through the tuberosity at the original footprint. The tendon is whip-stitched and pulled into the tunnel using the cortical button system. The button flips on the far cortex to hold the tendon against the bone.
The wound is closed in layers with absorbable sutures. A bulky dressing and a sling are applied at the end of the procedure. Distal biceps repair is usually a day case. Patients go home the same day.
Recovery
What recovery looks like
The sling is worn for six weeks. Gentle passive range of motion of the elbow starts within the first few days under physiotherapy guidance. The aim early on is to keep the elbow moving without putting load through the repair.
Active range of motion progresses after the first six weeks, with light functional use of the arm allowed for everyday tasks. Strengthening begins around eight weeks, starting with very light resistance and building up gradually.
Most patients return to office work within one to two weeks and to driving at six weeks (once out of the sling and with safe two-handed control of the steering wheel). Manual work and sport are usually cleared by four to six months, depending on the demands of the activity. Strength continues to improve for up to a year after surgery.
Outcomes after early anatomic repair are excellent. The vast majority of patients recover full or near-full strength and return to all previous activities without restriction.
Complications and risks
What can go wrong
Distal biceps repair is generally well tolerated, but no surgery is without risk. The specific risks include (but are not limited to):
- Nerve irritation. Temporary numbness or tingling in the forearm, particularly in the distribution of the lateral antebrachial cutaneous nerve, is relatively common and usually resolves within a few months. Permanent injury is uncommon. The posterior interosseous nerve is protected by careful technique and forearm positioning.
- Heterotopic ossification. Bone formation in the soft tissues at the operative site can occur and occasionally limits forearm rotation. Less common with the single anterior incision technique than with the older two-incision approach.
- Re-rupture. Uncommon. Compliance with the rehabilitation protocol matters, particularly avoiding heavy lifting in the first three months.
- Stiffness. A period of mild stiffness after sling removal is normal and improves with physiotherapy. Significant ongoing stiffness is uncommon.
- Infection. Uncommon. Antibiotics are given at induction.
- Hardware-related issues. The cortical button stays in the bone permanently and is usually well tolerated. Removal is rarely needed.
- Complex regional pain syndrome (CRPS). A rare condition that causes pain and stiffness in the hand.
- Anaesthetic and medical complications. Discussed separately by the anaesthetist before surgery.
FAQ
Frequently asked questions
- How quickly does distal biceps repair need to happen?
- Within two to three weeks of injury is the sweet spot. The retracted tendon is still mobile, the tissue planes are still soft, and an anatomic re-attachment to the radial tuberosity is straightforward. Beyond about six weeks the tendon scars in and shortens, and a graft may be needed to bridge the gap. If you suspect a distal biceps rupture, get an early opinion so the timeline does not slip.
- What technique does Dr Piper use?
- A small longitudinal anterior incision just distal to the elbow. The retracted tendon is identified and brought down. The radial tuberosity is prepared, and the tendon is fixed back to the bone with a cortical button. The single anterior approach avoids the second posterolateral incision used in older two-incision techniques and reduces the risk of heterotopic ossification.
- Will I get my strength back?
- After early anatomic repair, most patients recover full or near-full supination and elbow flexion strength compared with the uninjured side. Strength continues to improve for up to a year. The patients who do best are the ones who have surgery within the first few weeks and stick to the rehabilitation plan during the early healing phase.
- How soon can I drive, work, and lift again?
- Office work within one to two weeks. Driving at six weeks, once out of the sling and with safe two-handed control of the steering wheel. Light lifting at six to eight weeks. Full unrestricted heavy lifting and manual work by four to six months, after the tendon has fully healed back to the bone and strengthening has built up.
- What can go wrong?
- The specific risks are nerve irritation in the forearm (usually temporary), CRPS, heterotopic ossification (bone forming in the soft tissues, less common with the single-incision technique than the older two-incision approach), re-rupture (uncommon if rehabilitation is followed), infection (rare, antibiotics given at induction), and the general risks of anaesthesia. Risks are discussed in detail at consultation.
Related on this site
Conditions distal biceps repair is used for
Recent injury to the front of the elbow?
Book an early appointment with Dr Piper
The window for anatomic repair is short. Bring a referral and any imaging you have. Consultations at Lakeview Private Hospital, Norwest.