Rotator Cuff Tears: Repair, Recovery, and Long-Term Function

The rotator cuff is a group of four muscles whose tendons fuse around the shoulder joint to act as both a stabiliser and a power source — keeping the ball centred in the socket while you lift, reach, throw, or carry. Rotator cuff tears are one of the most common reasons adults over forty come to clinic with shoulder pain — and one of the most varied in how they should be treated. Some are accidents in young patients that need urgent surgery. Many are gradual, age-related tears in older adults that respond beautifully to physiotherapy. The art is choosing the right treatment for the right patient.

What the cuff does

The four cuff muscles — supraspinatus, infraspinatus, teres minor and subscapularis — wrap around the head of the humerus and their tendons converge on the upper end of the bone. Together they act like a strap that holds the shoulder joint centred, allowing the larger deltoid muscle to provide the power for lifting. Without a functional cuff, every overhead movement becomes painful and weak.

Two kinds of tears

• Acute (traumatic) tears happen in a single event — a fall on the outstretched arm, a heavy lift gone wrong, a sudden snatch on a lead. Often in younger patients. Sudden pain, immediate weakness, and a clear story.
• Degenerative tears develop gradually as part of age-related tendon attrition. Many begin as partial tears and progress over years to full-thickness tears. Often the patient cannot remember a triggering event. Common in patients over 60.

Symptoms

The classic picture is pain at the front and side of the shoulder, worse with overhead activity, that radiates down the upper arm. Night pain, particularly when lying on the affected side, is characteristic. Weakness develops as the tear progresses — patients describe difficulty lifting a kettle, hanging clothes, reaching for shelves. A small minority have remarkably little pain despite a large tear; weakness brings them to clinic.

Diagnosis

The combination of history, examination (specific tests for each cuff muscle), and imaging gives a complete picture. An MRI is the standard imaging — it shows tear size, location, retraction, muscle quality, and any associated injuries. Ultrasound is a quicker alternative in skilled hands.

Treatment: starts with the patient, not the tear

Treatment depends on three factors: the tear (size, location, chronicity, muscle quality), the patient (age, activity, demands, hand dominance), and the function (how disabling are the symptoms). The same MRI in two different patients can have two very different right answers.

Conservative management

Most degenerative partial-thickness tears and many small full-thickness tears in low-demand patients respond well to a structured 6–12 week physiotherapy programme focused on rotator cuff and scapular strengthening, posture, and movement re-education. Cortisone injections have a useful but limited role — typically one or two during the rehabilitation period to ease pain enough to engage with exercise.

Surgical repair

Surgery is generally recommended for:

• Acute traumatic tears in active patients (early repair prevents progression)
• Full-thickness degenerative tears that have failed 3 months of high-quality conservative care
• Larger tears at risk of progression with muscle atrophy
• Young patients with manual occupations or athletic demands

Arthroscopic repair is the standard modern technique — small portals, high-definition camera, suture anchors that reattach the tendon to its anatomic footprint on the bone. The operation typically takes 60–90 minutes as a day-care procedure.

Recovery after repair

Healing of tendon-to-bone takes months. Rehabilitation is structured to protect the repair while preventing stiffness:

• Weeks 0–6: Sling for protection. Gentle passive range of motion guided by physiotherapy. No active use of the operated arm.
• Weeks 6–12: Sling discontinued. Active assisted movement progresses to active movement. Light functional use.
• Weeks 12–24: Progressive strengthening. Return to overhead activity carefully.
• Months 6–12: Return to manual labour, sport, and full demands. Improvement continues for the first year.

Outcomes

Pain relief is achieved in over 90% of well-selected patients. Strength recovery depends on tear size and tendon quality — small repairs often regain near-normal strength; large or chronic tears regain serviceable strength with some persistent weakness. Patient-reported satisfaction is high.

When repair is not the right answer

Very large, chronic, retracted tears with significant muscle atrophy (fatty infiltration of the muscle on MRI) are unlikely to heal even after repair. For these patients, options include partial repair, biological augmentation (a graft or balloon spacer), tendon transfers, or in elderly patients with secondary arthritis, reverse shoulder replacement — an operation that reverses the geometry of the joint so the deltoid muscle can lift the arm even without a functional cuff. Reverse shoulder replacement has been one of the major orthopedic advances of the last twenty years.