Biceps tendon rupture (proximal)

What is a proximal biceps tendon rupture?

In the case of a proximal biceps tendon rupture, the long biceps tendon (LBS) usually tears near its course in the shoulder joint. The short biceps tendon on the coracoid process remains intact, so that the flexion strength of the elbow is often only slightly restricted. Typically, there is a visible bulging of the muscle belly on the upper arm (Popeye sign) and a sudden decrease in pain after the tear.

The cause is often degenerative damage caused by wear, inflammation and entrapment (impingement) or the interaction with rotator cuff diseases. Acute trauma can trigger the tear, but it does not have to be present. The proximal rupture differs from the much rarer distal biceps tendon rupture at the elbow, which usually results in a greater reduction in strength in supination and flexion.

Anatomy and function of the biceps tendons

The biceps muscle has two tendon origins: the long biceps tendon (LBS) runs through the shoulder joint and the biceps tendon canal, the short biceps tendon arises from the coracoid process. Both fuse in the muscle belly and attach to the radius bone. The LBS also acts as a dynamic stabilizer in the acromion.

• Tasks of the biceps: elbow flexion, forearm rotation (supination), support of shoulder stability
• Long biceps tendon: intra-articular course – susceptible to irritation, degeneration and entrapment
• Short biceps tendon: remains intact in the event of a proximal rupture - therefore usually minor loss of strength in everyday life

Symptoms: How do you recognize the rupture?

• Sudden “snapping” or tearing with stabbing pain in the front of the shoulder/upper arm
• Visible bulging of the biceps muscle belly (Popeye sign), sometimes with bruising on the upper arm
• Initially pain when lifting, carrying, overhead work; often rapid decrease in pain after the tear
• Usually only slight weakness when bending the elbow, occasionally tiring supination (twisting movement)
• Accompanying complaints due to rotator cuff or bursitis possible (night pain, impingement)

The distal biceps tendon rupture at the elbow must be differentiated: the Popeye sign is often missing on the upper arm and there is typically a significant reduction in strength. a. in supination. A medical examination will reliably clarify this.

Causes and risk factors

In most cases, a previously damaged tendon tears. Over the years, micro-injuries, inflammation and friction in the acromion (impingement) can weaken the LBS. A seemingly harmless trigger – e.g. B. lifting an object - is then sufficient.

• Degeneration/wear of the long biceps tendon, often together with tendinopathies of the rotator cuff
• Repetitive overhead loads (e.g. painting, throwing sports, CrossFit) and sudden tensile loads
• Shoulder impingement, instability or bony tightness in the biceps tendon canal
• Risk factors: older age, smoking, metabolic diseases (e.g. diabetes), muscular imbalances
• Drug influences and cortisone injections near the tendons can weaken tendons - this should be considered individually by a doctor

Diagnosis in the shoulder consultation

The diagnosis is based on anamnesis, physical examination and – depending on the findings – imaging diagnostics. It is important to recognize accompanying lesions (e.g. rotator cuff tears) as they influence treatment planning.

• Clinic: Popeye sign, tenderness in the biceps tendon canal, pain provocation during the speed/Yergason test
• Functional test: shoulder mobility, rotator cuff tests, comparison of strength on both sides
• Ultrasound: dynamic assessment of tendon, hematoma, tendon stump; quickly and radiation-free
• MRI: useful if the findings are unclear or additional damage is suspected (rotator cuff, SLAP lesion)
• X-ray: to assess bony structures and accompanying osteoarthritis

In Hamburg-Winterhude, if necessary, we coordinate further imaging promptly and discuss the results with you in an understandable manner.

Conservative treatment: The standard for many sufferers

Since the short biceps tendon is preserved, many patients achieve very good everyday function with conservative therapy. The aim is to relieve pain, optimize shoulder mechanics and regain a safe level of stress.

• Acute measures: protection, cooling (short-term, gentle on the skin), if necessary elastic fixation; Arm elevation in case of swelling
• Medical pain therapy as recommended by a doctor (e.g. short-term anti-inflammatory drugs, if tolerated)
• Physiotherapy: posture training, scapular stability, strengthening of the rotator cuff, stretching of the anterior shoulder chain
• Manual techniques and measured exercises to improve gliding ability in the biceps tendon canal
• Everyday adjustment: temporarily no heavy lifting/pulling movements, limit overhead loads
• Gradual increase in load: The aim is to return to work and sport in a pain-adapted manner

Injections directly into the tendon are not performed. In the case of painful comorbidities (e.g. subacromial irritation), targeted, carefully considered infiltrations into the surrounding area can be considered - always after weighing up the benefits and risks.

Surgical options: tenotomy or tenodesis of the long biceps tendon

Surgery makes sense selectively - for example, if pain/cramps persist despite consistent conservative therapy, high functional demands (e.g. heavy physical work, overhead sports), significant cosmetic impairment or if there is a simultaneous rotator cuff lesion that requires reconstruction.

• Tenotomy: transection and release of the LBS. Advantages: short procedure, quick pain relief possible. Cons: higher risk of Popeye's sign and occasional cramps.
• Tenodesis: Fixation of the LBS to the humerus (arthroscopic or mini-open). Advantages: better shape retention, lower risk of cramps/deformities. Disadvantages: longer follow-up treatment, surgical risks, need for implants.

• General surgical risks: infection, bleeding, nerve irritation, frozen shoulder, persistent discomfort
• Follow-up treatment: temporary immobilization in a loop bandage, early painless mobilization; No flexion/supination exercises performed against resistance for approximately 6 weeks after tenodesis

We will discuss with you transparently whether and when a surgical procedure makes medical sense and, if necessary, work closely with specialized shoulder surgeons.

Rehabilitation and healing process

The time course depends on the initial findings, comorbidities and the therapy chosen. Close physiotherapeutic support is central to a good result.

Forecast: What is realistic?

Everyday function is often good in cases of proximal biceps tendon rupture. Slight, usually non-limiting strength deficits during rotational movements (supination) may remain. Cosmetic changes persist without surgery but are medically harmless. In the case of combined shoulder diseases, the prognosis depends on the overall damage and consistent rehabilitation.

Prevention and self-help

• Warm up and technically sound training, especially with overhead and pulling loads
• Compensation for muscle imbalances: strong rotator cuff and stable shoulder blade muscles
• Load management: increases gradually; Pauses for warning pain
• Early treatment of shoulder tightness and tendon irritation
• Optimize lifestyle factors (e.g. quitting smoking, controlling metabolism)
• Discuss medications and injections that can affect tendons with your doctor

When should I seek medical advice?

• Sudden pain with audible snapping and visible deformation
• Significant reduction in strength, sensory disturbances or severe swelling/bruising
• New blockages, feeling of instability or suspected shoulder dislocation
• Fever, redness, increasing pain at rest
• Complaints that do not go away despite rest and basic measures

Your treatment in Hamburg-Winterhude

In our orthopedic practice at Dorotheenstrasse 48, 22301 Hamburg, we offer a structured assessment and conservative treatment of shoulder and biceps tendon problems. We rely on understandable information, modern diagnostics (including sonography) and individually tailored therapy planning. If surgery is indicated, we provide neutral advice and coordinate referrals to experienced shoulder surgeons if necessary.

The goal is a safe return to everyday life, work and sport - without unnecessary interventions and with a focus on what you really need.