What Is the Rotator Cuff?
The rotator cuff is a group of four muscles and their associated tendons that surround the shoulder joint. Together, they hold the head of the upper arm bone firmly within the shallow socket of the shoulder, enabling you to lift, rotate, and reach with your arm. When any of these tendons become damaged — through acute injury or gradual wear — it's referred to as a rotator cuff injury.
Common Causes
Rotator cuff injuries generally fall into two broad categories:
- Acute tears: Caused by a single event such as a fall onto an outstretched arm, a sudden heavy lift, or a direct blow to the shoulder.
- Degenerative tears: Develop over time due to repetitive overhead movements (common in painters, swimmers, and tennis players), bone spurs, or the natural reduction in blood supply to tendons as we age.
Age is also a significant factor. Degenerative rotator cuff injuries become increasingly common in people over 40.
Recognising the Symptoms
Symptoms can vary depending on the severity of the injury, but typically include:
- A dull ache deep in the shoulder
- Pain that disturbs sleep, particularly when lying on the affected side
- Weakness when lifting or rotating the arm
- Difficulty reaching behind your back or overhead
- A crackling or grinding sensation on movement
Importantly, some rotator cuff tears — especially partial or degenerative ones — cause little or no pain initially. The injury may only become apparent when strength or range of motion is tested.
How Is It Diagnosed?
A physiotherapist or doctor will typically begin with a physical examination, testing your range of motion, strength, and the location of tenderness. Imaging is often used to confirm the diagnosis:
- Ultrasound: A quick, cost-effective way to visualise tendon damage in real time.
- MRI: Provides a detailed view of the soft tissue, useful for identifying the size and exact location of tears.
- X-ray: Cannot show tendon damage directly, but can rule out other causes such as arthritis or bone spurs.
Treatment Options
Not all rotator cuff injuries require surgery. Treatment is guided by the severity of the tear, your age, activity level, and how the injury responds to conservative care.
Conservative (Non-Surgical) Treatment
- Physiotherapy: A structured programme to restore strength and movement — this is the cornerstone of rotator cuff rehabilitation.
- Rest and activity modification: Reducing aggravating movements while maintaining gentle mobility.
- Pain management: Ice, anti-inflammatory medications, or corticosteroid injections in some cases.
Surgical Treatment
Surgery (typically arthroscopic repair) is considered when the tear is large, full-thickness, or hasn't responded to several months of conservative treatment. Recovery from surgery is more involved and usually requires a dedicated post-operative physiotherapy programme spanning several months.
What to Expect from Physiotherapy
Physiotherapy for rotator cuff injuries focuses first on reducing pain and inflammation, then progressively rebuilding the strength and coordination of the shoulder muscles. Your physiotherapist will guide you through exercises targeting the rotator cuff specifically, as well as the surrounding scapular stabilisers. Most people with partial tears see significant improvement within 8–12 weeks of consistent physiotherapy.
Key Takeaway
Rotator cuff injuries are highly treatable, especially when addressed early. If you're experiencing persistent shoulder pain or weakness, a physiotherapy assessment is an excellent first step — it can confirm what's happening and set you on the right path to recovery without unnecessary intervention.