Standard pre-operative evaluation including blood work, EKG, and chest X-ray. Mandatory NPO status for at least 8 hours prior to surgery. Assessment of coagulation profile and cessation of anticoagulants 5-7 days prior. Patient consent, marking of the operative site, and administration of prophylactic intravenous antibiotics.
Post-operative admission for 2 days for pain management and wound monitoring. Immobilization in a shoulder sling for 4-6 weeks with restricted overhead activity. Progressive physical therapy initiation at week 2. Thromboprophylaxis and monitoring for neurovascular integrity. Discharge upon adequate pain control and mobility status.
Comprehensive Guide: Arthroscopic Biceps Tenodesis and Tenotomy
The long head of the biceps brachii (LHB) tendon is a frequent source of shoulder pain, often secondary to rotator cuff pathology, labral tears, or primary tendinopathy. When conservative management—including physical therapy, non-steroidal anti-inflammatory drugs (NSAIDs), and corticosteroid injections—fails to alleviate symptoms, surgical intervention is indicated. Arthroscopic biceps tenodesis and tenotomy represent the gold standard surgical solutions for refractory LHB pathology.
1. Introduction and Clinical Overview
The LHB tendon traverses the glenohumeral joint, originating from the superior labrum and supraglenoid tubercle. Its unique anatomy makes it highly susceptible to mechanical impingement, inflammatory changes, and degenerative wear.
- Tenotomy: Involves the simple release of the LHB tendon from its attachment site. The tendon is allowed to retract distally into the bicipital groove.
- Tenodesis: Involves the release of the LHB tendon from its attachment site and subsequent reattachment to the humerus (either supra- or sub-pectoral) using suture anchors, interference screws, or cortical buttons.
While both procedures effectively eliminate pain by removing the damaged tissue from the joint, the choice between them involves a careful assessment of patient age, activity level, and aesthetic preferences.
2. Technical Specifications and Mechanisms
The mechanism of pain relief in both procedures is the removal of the LHB tendon from the articular space. By performing a tenotomy or tenodesis, the surgeon eliminates the "pain generator" that causes mechanical catching, snapping, and localized anterior shoulder pain.
Comparison Table: Tenodesis vs. Tenotomy
| Feature | Tenodesis | Tenotomy |
|---|---|---|
| Cosmesis | Normal contour maintained | Risk of "Popeye" deformity |
| Strength | Preserves flexion/supination force | Mild loss of supination strength |
| Recovery | Slower (bone-to-tendon healing) | Faster (soft tissue healing only) |
| Patient Profile | Younger, active, aesthetic concerns | Older, sedentary, low demand |
3. Extensive Clinical Indications
Surgical intervention is indicated only after a rigorous 3–6 month trial of non-operative management.
Primary Indications:
- Refractory Bicipital Tendinitis: Chronic inflammation unresponsive to conservative care.
- SLAP Lesions (Type II, III, IV): Superior Labrum Anterior to Posterior tears where the LHB is unstable.
- LHB Instability: Subluxation or dislocation of the tendon from the bicipital groove.
- Full-Thickness Rotator Cuff Tears: Often performed as an adjunct to rotator cuff repair to prevent persistent anterior pain.
- Failed Previous Procedures: Revision surgery for persistent biceps pain.
Patient Selection Criteria:
- Active Patients: Younger patients (<50) or those involved in heavy lifting/overhead athletics are generally candidates for tenodesis to maintain muscle contour and maximal supination strength.
- Low-Demand Patients: Patients >60 with lower activity levels may be candidates for tenotomy, provided they are counseled on the potential for muscle belly distalization ("Popeye deformity").
4. Pre-Operative Preparation
Preparation is critical to ensure patient safety and surgical success.
- Imaging: MRI is the standard modality to visualize the LHB, labrum, and rotator cuff. Ultrasound may be used for dynamic assessment.
- Clinical Testing: Positive Speed’s test, Yergason’s test, and Neer impingement sign are diagnostic indicators.
- Medical Clearance: Optimization of comorbidities (e.g., blood glucose control in diabetics) is essential to ensure bone healing if a tenodesis is performed.
- Informed Consent: Detailed discussion regarding the "Popeye" deformity and the duration of post-operative immobilization.
5. The Procedure: Step-by-Step
Arthroscopic Tenotomy
- Diagnostic Arthroscopy: Evaluation of the glenohumeral joint and the LHB.
- Debridement: The inflamed tendon is visualized.
- Release: Using an arthroscopic blade or radiofrequency ablation device, the LHB is cut at its origin on the superior labrum.
- Confirmation: The stump is debrided to prevent impingement.
Arthroscopic Tenodesis
- Release: Similar to tenotomy, the tendon is released from the labrum.
- Preparation of the Groove: The bicipital groove is cleared of soft tissue to create a bleeding bone bed.
- Fixation: The tendon is retrieved and secured to the proximal humerus using a chosen fixation device (interference screw or cortical button).
- Verification: Tension is checked to ensure it is anatomic and secure.
6. Post-Operative Recovery Protocol
Recovery is categorized by the procedure type.
Phase 1: Protection (Weeks 0–6)
- Sling Use: Required for comfort; 2–4 weeks.
- ROM: Pendulums and passive ROM allowed. No active biceps contraction.
- Avoid: Lifting anything heavier than a cup of coffee.
Phase 2: Early Strengthening (Weeks 6–12)
- Active ROM: Initiated once the surgeon confirms healing.
- Submaximal Isometrics: Gentle activation of the biceps.
- Progression: Gradual increase in resistance as tolerated.
Phase 3: Advanced Strengthening (Months 3+)
- Sport-Specific Training: Return to overhead activities and heavy lifting.
- Full Function: Typically achieved by 4–6 months.
7. Risks, Side Effects, and Contraindications
While highly successful, these procedures are not without risk.
Potential Complications:
- Popeye Deformity: The muscle belly retracts distally. More common in tenotomy.
- Persistent Pain: Often due to incomplete release or associated undiagnosed pathology.
- Infection: Standard surgical site infection risk (<1%).
- Hardware Irritation: Specific to tenodesis; may require hardware removal.
- Stiffness: Post-operative adhesive capsulitis.
Contraindications:
- Active infection in the shoulder joint.
- Severe medical comorbidities precluding general anesthesia.
- Patient unwillingness to comply with post-operative immobilization.
8. Alternative Treatments
Before proceeding to surgery, ensure all alternatives have been exhausted:
1. Physical Therapy: Focus on scapular stabilization and rotator cuff strengthening.
2. Injections: Ultrasound-guided corticosteroid or platelet-rich plasma (PRP) injections into the bicipital sheath.
3. Activity Modification: Avoidance of overhead loading or repetitive flexion.
4. NSAIDs/Analgesics: Pharmacological management of chronic inflammation.
9. Frequently Asked Questions (FAQ)
1. Will I lose strength in my arm after a tenotomy?
Most patients experience a negligible loss of strength (roughly 5–10%), which is usually imperceptible in daily life.
2. What exactly is the "Popeye deformity"?
It is the distal migration of the biceps muscle belly. While it looks different, it is rarely painful and does not significantly impact function.
3. Is tenodesis better than tenotomy?
Tenodesis is generally preferred for patients who are concerned about aesthetics or require high-level athletic performance. Tenotomy is preferred for simpler, faster recovery.
4. How long do I have to wear a sling?
Typically 2 to 4 weeks depending on the surgeon's preference and the quality of the fixation.
5. Can I drive after the surgery?
Only once you are off narcotic pain medication and have been cleared by your surgeon, usually after the first follow-up visit.
6. What is the success rate?
Success rates for both procedures in alleviating anterior shoulder pain are reported between 85% and 95%.
7. Will I need physical therapy?
Yes, physical therapy is vital to restore range of motion and ensure proper muscle activation without overloading the new fixation.
8. What happens to the cut end of the tendon in a tenotomy?
It retracts into the bicipital groove and eventually scars down into the surrounding tissue.
9. Are there different types of fixation for tenodesis?
Yes, surgeons use interference screws, suture anchors, or cortical buttons. All are highly effective; the choice depends on surgeon experience and bone quality.
10. How soon can I return to work?
Sedentary work can often be resumed in a few days. Manual labor or overhead work may require 3–6 months of recovery.
10. Conclusion
Arthroscopic biceps tenodesis and tenotomy are highly effective interventions for the management of chronic LHB pathology. By understanding the biomechanical implications and matching the procedure to the patient’s lifestyle and goals, orthopedic surgeons can significantly improve quality of life and restore functional capacity. Always consult with a board-certified orthopedic surgeon to determine the most appropriate surgical path based on your specific clinical presentation and diagnostic imaging.
Disclaimer: This guide is for educational purposes only and does not constitute medical advice. Always seek the counsel of a licensed medical professional for individual health concerns.