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OVERVIEW
The primary goal of arthroscopic rotator cuff repair is to restore structural continuity to the rotator cuff—a group of four musculotendinous units stabilizing the shoulder joint. By re-anchoring torn tendon tissue back to its anatomical footprint on the humerus, the procedure restores shoulder leverage, halts degenerative joint progression, and alleviates pain. As an orthopedic surgical intervention, it offers a minimally invasive alternative to traditional open repair techniques, resulting in reduced postoperative soft tissue trauma and accelerated early rehabilitation.
PROCEDURE
Arthroscopic rotator cuff repair is conducted in an operating suite under standard sterile conditions. The patient is placed in either the beach-chair or lateral decubitus position. Regional nerve block anesthesia is administered to minimize intraoperative pain signals and postoperative narcotic requirements, supplemented by light general anesthesia.
The surgeon creates 3 to 5 small skin puncture portals (approximately 5 to 7 millimeters each) around the shoulder. A specialized optical camera called an arthroscope is inserted into the joint alongside continuous saline irrigation to clear blood debris and maintain joint distension.
The procedure begins with diagnostic arthroscopy to inspect the glenohumeral joint, biceps tendon, labrum, and articular surface of the rotator cuff. Subacromial bursitis and bone spurs are addressed via subacromial decompression (acromioplasty) to create clearance for the repaired tendon tissue.
The repair site at the greater tuberosity of the humerus is decorticated using a motorized burr to create a bleeding bone bed rich in healing factors. Threaded or expansion anchors carrying high-tensile non-absorbable sutures are inserted into the bone. Specialized suture-passing instruments shuttle the strands through the free margin of the torn tendon. The sutures are tied or secured using knotless techniques to compress the tendon against the bone footprint. Once fixation stability is verified under direct visualization, instruments are removed, skin portals are closed with fine sutures, and a sterile dressing and sling are applied.
BENEFITS
Evidence-based benefits of arthroscopic rotator cuff repair documented in orthopedic clinical trials include:
- Substantial Pain Reduction: High rates of long-term pain relief, particularly resolution of sleep-disrupting nocturnal pain (MOON Shoulder Group, 2020).
- Restoration of Active Mobility: Restoration of functional active range of motion, allowing patients to resume overhead daily living activities.
- Preservation of Joint Integrity: Prevention of progressive tendon retraction, muscle fatty infiltration, and secondary glenohumeral osteoarthritic changes.
- Minimally Invasive Soft Tissue Preservation: Preservation of the deltoid muscle attachment, leading to lower acute postoperative pain and decreased wound complication rates compared to open repair procedures.
RECOVERY
Recovery following arthroscopic rotator cuff repair progresses through distinct biological healing phases over 6 to 12 months:
- Phase 1: Protection & Passive Motion (Weeks 0–6): Continuous sling immobilization. Physical therapy focuses exclusively on passive range of motion to prevent adhesive capsulitis while avoiding active contraction of the repaired muscle.
- Phase 2: Active-Assisted & Active Motion (Weeks 6–12): Gradual weaning from the sling. Patients initiate active-assisted movements (using pulleys or sticks) progressing to unassisted active elevation against gravity.
- Phase 3: Strengthening & Resistance (Weeks 12–24): Initiation of progressive elastic band resistance training and dynamic scapular stabilization exercises. Light occupational work is typically resumed.
- Phase 4: Advanced Functional Return (Months 6–12): Gradual return to heavy manual labor, overhead athletic sports, and unconstrained physical recreation, pending quantitative strength testing showing parity with the contralateral arm.
WHAT WE TREAT
Arthroscopic rotator cuff repair is indicated for structural disruption of one or more of the rotator cuff tendons, including:
- Symptomatic Full-Thickness Tears: Complete detachment of the supraspinatus, infraspinatus, subscapularis, or teres minor tendon from the humerus.
- High-Grade Partial-Thickness Tears: Tears involving greater than 50 percent of tendon thickness (Ellman Class III) that fail non-operative management.
- Acute Traumatic Tears: Sudden full-thickness tendon disruption resulting from high-energy trauma or dislocation in previously asymptomatic shoulders.
- Degenerative Tears with Progressive Dysfunction: Chronic wear tears demonstrating progressive loss of active overhead mobility and persistent nocturnal pain.
PREPARATION
Pre-operative workup begins with a comprehensive physical examination assessing dynamic range of motion, rotator cuff strength tests (such as the Empty Can and Belly Press tests), and neurovascular integrity. Standard three-view shoulder radiographs and an MRI scan are reviewed to document tear dimensions, muscle quality (Goutallier stage), and bone anatomy.
Patients undergo routine medical clearance including blood work, electrocardiogram (ECG), and medication review. Anticoagulant and antiplatelet medications (such as warfarin, clopidogrel, or aspirin) are discontinued 5 to 7 days prior to surgery under specialist direction to reduce perioperative bleeding risks.
Patients must fast from solid foods for 8 hours and clear liquids for 2 hours prior to arrival. Pre-operative skin preparation involves antibacterial body washes the night before and morning of surgery. Patients are counseled on post-operative home modification, including arranging assistance for basic daily activities and setting up a comfortable recliner chair for sleeping during the early sling immobilization period.
RISKS
Complications of arthroscopic rotator cuff repair range from mild transient symptoms to structural procedural failures. Common early side effects include localized swelling, mild wound ecchymosis, and temporary numbness or tingling surrounding the portal sites or regional nerve block distribution.
Structural re-tearing or failure of healing at the tendon-to-bone interface represents the primary long-term biological risk. Large cohort analyses demonstrate re-tear rates ranging from 10% to 15% for small single-tendon tears, increasing to 30% to 50% for massive multi-tendon tears or degraded tissue in patients aged over 70 years (Tashjian et al., 2010).
Postoperative shoulder stiffness or adhesive capsulitis (frozen shoulder) occurs in approximately 5% to 10% of cases, requiring extended physical therapy or capsular release. Infection rates for all-arthroscopic procedures remain exceptionally low (under 0.5% to 1%). Rare neurovascular injuries, such as axillary nerve or musculocutaneous nerve neurapraxia, occur in less than 0.5% of procedures. Deep vein thrombosis (DVT) or pulmonary embolism remains rare in upper extremity arthroscopy (<0.1%).
JOURNEY
Pre-Procedure Evaluation
Patients undergo diagnostic clinical examination, orthogonal shoulder radiographs, and magnetic resonance imaging (MRI) to classify tear topography, tendon retraction, and muscle atrophy. Baseline shoulder range of motion and strength measurements are recorded, followed by medical clearance and pre-operative anesthetic screening.
Surgical Intervention
Conducted as a day-surgery outpatient procedure under regional nerve block and general anesthesia. Arthroscopic portals are established, diagnostic joint inspection is performed, subacromial decompression is completed if indicated, and suture anchors are inserted into the bone to secure the tendon back to its footprint.
Early Post-Operative Phase
For the first 4 to 6 weeks, the arm is immobilized in a protective shoulder sling with an abduction pillow to protect the tendon-to-bone construct. Controlled passive range-of-motion therapy begins under physical therapy supervision to prevent capsular stiffness.
Rehabilitation and Follow-Up
Active-assisted movement begins at 6 weeks, progressing to active strength rehabilitation around week 10 to 12. Complete biological integration of the tendon to the bone requires 6 to 12 months, with ongoing clinical and functional assessments at regular intervals.
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