Muscle Transfer (Shoulder)

Massive rotator cuff tears that cannot be repaired cannot be addressed with classical repair or arthroscopic methods. In these cases, muscle-tendon transfer is performed using a nearby muscle's tendon in place of the torn tendon to try to regain shoulder function. An advanced surgical technique preferred in young, active patients before resorting to shoulder prosthesis.

Symptoms

Characteristics of muscle transfer candidates:

• Irreparable massive rotator cuff tear (retracted, fat infiltration Goutallier 3-4 on MRI)
• Failed previous repair attempts
• Severe difficulty raising arm above shoulder level
• Generally age under 65, active lifestyle
• Arthritis not yet at advanced level
• Patients where movement loss, not pain, is the dominant complaint

Diagnostic Methods

Detailed clinical examination, X-rays, and MRI evaluate tear characteristics (size, retraction, muscle fat degeneration). The Goutallier classification shows muscle regeneration capacity. CT evaluates accompanying bone pathologies.

Treatment Approach

Non-Surgical Treatments

All conservative options must be tried before muscle transfer: long-term physical therapy, intra-articular injections, activity modification. If these are insufficient and the patient is a surgical candidate, muscle transfer is planned.

Surgical Treatment

Different transfers used per tear location: Latissimus dorsi transfer (for posterosuperior tears), pectoralis major transfer (for subscapularis tears), in selected cases lower trapezius transfer or combined techniques. Transfer surgery requires advanced technique; correct patient selection is critical for success.

Surgical Process

Under general anesthesia + interscalene block. Duration is 2-4 hours. Both classical open and arthroscopic-assisted techniques exist.

Hospital Stay

2-3 overnight hospital stay is typical.

Recovery Process

• Weeks 0-6: Special arm-shoulder brace, motion restriction, pain control
• Weeks 6-12: Passive exercises start, gradual active-assisted
• Months 3-6: Active exercises, retraining of transferred muscle
• Months 6-12: Advanced strengthening, reaching maximum function

Return to Work

Desk work in 4-6 weeks, light physical work in 4-6 months, heavy work in 9-12 months. Return to some heavy professions may not be complete.

Potential Complications

Complication rate around 10-15% as it is complex surgery. Possible problems: transfer failure, nerve injury (axillary or thoracodorsal nerve), infection, shoulder motion restriction, donor site problems.