A rotator cuff tear involves damage to one or more of the tendons in the shoulder's rotator cuff.
The rotator cuff is a group of four muscles (supraspinatus, infraspinatus, teres minor and subscapularis) whose tendons wrap around the ball of the shoulder joint. Together they hold the joint stable and power lifting and rotation of the arm. A tear in one or more of these tendons is one of the most common causes of shoulder pain and weakness in adults.
Tears vary enormously. Some are partial-thickness, affecting only part of the tendon; others are full-thickness, where the tendon pulls away from the bone completely. They also arise in two quite different ways: suddenly, through an injury such as a fall or heavy lift, or gradually, as tendons wear with age and use. Degenerative tears become increasingly common from middle age onward, and many people over sixty have some degree of rotator cuff wear without ever knowing it.
That variability matters, because it means there is no single "right" treatment for a rotator cuff tear. A small degenerative tear in a comfortable shoulder is managed very differently from an acute tear in a young, active patient. What a torn rotator cuff can affect is broad: sleep, work, sport and everyday tasks like reaching overhead or behind the back. The goal of assessment is therefore to understand not just the tear itself, but how it is affecting your life, and to match the treatment to both.
Most rotator cuff tears fall into one of two groups.
Degenerative tears develop slowly as the tendon weakens over time. Age is the biggest factor, but repetitive overhead load also contributes, whether in occupations such as painting or carpentry or in overhead sports such as swimming, tennis and cricket. Tears are more common in smokers and in people with a family history of rotator cuff problems. These tears often begin as partial damage and can enlarge gradually.
Acute tears happen in a single event: a fall onto an outstretched arm, lifting something heavy with a jerking motion, or a shoulder dislocation. In older patients an injury often completes a tear in a tendon that was already worn.
Because a weakened tendon can fail with surprisingly little force, a tear should be considered whenever significant shoulder pain or weakness follows even a modest injury.
The most common symptoms of a rotator cuff tear are:
Symptoms do not always match the size of the tear. Some large tears cause surprisingly little pain, while smaller ones can be very limiting. One pattern deserves prompt attention: sudden weakness in the arm after an injury, which may indicate an acute tear that benefits from early assessment, particularly in younger and active patients, where timing can influence treatment options.
Assessment starts with a careful history and examination, usually alongside X-rays. An ultrasound or MRI scan is commonly used to confirm the tear, measure its size, and assess the quality of the tendon and muscle, all of which shape the treatment discussion.
Many rotator cuff tears, particularly degenerative tears, are managed successfully without surgery. Non-surgical treatment centres on physiotherapy to strengthen the remaining cuff and the muscles around the shoulder blade, along with activity modification and simple pain relief. A corticosteroid injection can help settle pain in selected patients, used judiciously.
Surgery is generally considered in three situations: an acute, traumatic tear, particularly in younger or more active patients where early repair can protect long-term function; significant weakness that limits daily life; or ongoing pain that has not responded to a proper course of non-surgical treatment.
Rotator cuff repair is usually performed arthroscopically (keyhole surgery), reattaching the torn tendon to the bone with small anchors.
Some long-standing, large tears are not repairable because the tendon and muscle have deteriorated too far. In appropriate patients, other options can be discussed, which may include tendon transfer procedures or reverse shoulder replacement.
Which path is right depends on the tear, the shoulder, and the person: age, activity, occupation and goals all carry weight in the decision.
Most people with a rotator cuff tear improve substantially with appropriate treatment, whether surgical or not.
After surgical repair, recovery is a staged process: a period in a sling to protect the repair, followed by physiotherapy that progresses from gentle movement to strengthening. Most patients return to the majority of daily activities within a few months, with strength continuing to improve for up to a year.
Outcomes are influenced by the size and age of the tear, the quality of the tendon and muscle, patient age, smoking status, and how closely the rehabilitation programme is followed. It is also honest to say that repaired tendons do not always heal fully. The risk of re-tear is higher with large and long-standing tears, which is one reason timely assessment matters.
Rotator cuff tears are common, and they span a wide spectrum, from incidental wear that needs no treatment to acute tears that benefit from early surgery. Many are managed well without an operation, and where repair is needed, modern arthroscopic techniques aim to restore strength and comfort with a structured recovery. If shoulder pain or weakness is affecting your sleep, work or activities, an assessment is the right first step toward understanding what is going on and what your options are.
