Rotator Cuff Injuries: From Niggle to Tear

Shoulders are the joint people put up with for longest. A twinge reaching into the back seat of the car, a dull ache after decorating, a night where you cannot find a comfortable position — and most people wait months before doing anything about it. By the time somebody books rotator cuff physio in Liverpool with me, the problem has usually been running for half a year and has quietly reshaped how they use the arm.

Understanding what the rotator cuff actually is, and how these problems progress, makes it much easier to know when to act.

What the rotator cuff is

Your shoulder is a shallow ball-and-socket joint, built for enormous range at the cost of inherent stability. Four small muscles — supraspinatus, infraspinatus, teres minor and subscapularis — wrap around the top of the arm bone and blend into a common tendon sheet. That is the rotator cuff.

Its job is less about producing big movements and more about control. Every time you lift your arm, the cuff pulls the ball of the joint snugly into the socket so the large muscles can do their work without the joint sliding around. It is the steadying hand on the ladder, not the person climbing it.

The spectrum, from niggle to tear

Rotator cuff problems are best thought of as a continuum rather than a set of separate diseases.

Reactive tendinopathy. The tendon has been asked to do more than it was ready for — a weekend of painting, a return to the gym, a new job with overhead work. It becomes irritable and swollen. This is the stage where things settle quickest.

Persistent tendinopathy, often with subacromial pain. Symptoms have been present for months. There is a characteristic painful arc when raising the arm to shoulder height, difficulty with overhead reaching, and pain lying on that side at night. The tendon has adapted poorly, the surrounding muscles have weakened through avoidance, and the pattern is now self-sustaining.

Partial-thickness tears. Some of the tendon fibres have given way. Importantly, this often behaves very much like tendinopathy and responds well to loading — a tear is not automatically a surgical problem.

Full-thickness tears. The tendon is through. These divide into degenerative tears, which develop gradually over years and are surprisingly common in pain-free older shoulders, and traumatic tears, which follow a specific incident such as a fall onto an outstretched arm or catching a heavy object.

The reason that spectrum matters: the same scan finding means quite different things depending on how it arose and how the shoulder actually functions.

What it feels like

Typical symptoms include pain on the outer upper arm rather than the top of the shoulder, pain reaching overhead, behind your back or across your body, difficulty with the bra strap or seatbelt, weakness lifting to the side, and night pain when lying on the affected shoulder. That last one is the symptom that finally drives most people to seek help.

Stiffness that affects every direction, including having someone else move your arm passively, points instead towards frozen shoulder, which is a different problem with a different management approach.

What an assessment involves

When I assess a shoulder, I want to establish three things: whether the cuff is intact enough to function, what is driving the irritation, and whether anything else is contributing.

That means taking a proper history — the onset, the aggravating activities, the night pain, your work and sporting demands — then testing active and passive range, strength in each of the cuff's directions, and how your shoulder blade moves. I check the neck, because neck problems refer pain into the shoulder convincingly, and I screen the elbow and thoracic spine. I use a cluster of orthopaedic tests rather than relying on any single one, because individually they are not accurate enough to hang a diagnosis on.

Most rotator cuff problems do not need a scan to start treatment. Imaging becomes worthwhile when there is a suspected traumatic full-thickness tear, when significant weakness persists, or when surgery or an injection is genuinely being considered.

Treatment that actually works

The evidence here is clear and reassuring: for the great majority of rotator cuff problems, including many partial and even some full-thickness degenerative tears, a well-structured exercise programme produces outcomes comparable to surgery.

A good programme has stages. Early on, we reduce the aggravating load without stopping activity altogether, and use isometric holds, which are often well tolerated and can ease pain. Then comes progressive strengthening of the cuff through range, alongside scapular and thoracic work. Finally, we rebuild the specific demands of your life — overhead reaching, lifting, throwing, whatever it happens to be — and load the tendon heavily enough to genuinely change its capacity.

Manual therapy has a role in easing symptoms and improving range so exercise becomes easier, and I use it, but it is a facilitator rather than the treatment. Corticosteroid injections can help in a genuinely irritable shoulder, particularly to open a window for rehabilitation, but repeated injections without a rehab plan tend to disappoint. The realistic timescale for a persistent rotator cuff problem is three to six months of consistent work. People who understand that up front do far better than those expecting a fortnight's fix.

Surgery is worth considering for acute traumatic full-thickness tears in active people, and for those who have genuinely completed a good rehabilitation programme without progress.

Get urgent advice if

• You suffered a specific injury and cannot lift your arm away from your side at all — a sudden loss of active movement after trauma needs prompt orthopaedic assessment
• The shoulder is visibly deformed after a fall, suggesting a dislocation or fracture
• The joint is hot, swollen and very painful with fever or feeling generally unwell
• You have unexplained weight loss, night sweats or a history of cancer alongside new shoulder pain

Do not wait it out

The single most common regret I hear about shoulders is how long people left it. Cuff problems rarely resolve on their own once they have passed a few months, largely because we all unconsciously stop using the arm in the ways that would keep it strong. Autumn tends to be when these appear in my diary across Merseyside — the summer's decorating, gardening and DIY catching up with people.

If your shoulder has been grumbling for more than six weeks, it is worth an assessment. You can read more about how I manage shoulder injury and what a full course of musculoskeletal physiotherapy involves. If getting to appointments is difficult, home visit physiotherapy means I come to you, and for shoulder rehab in particular, online consultations work well once the initial assessment is done.

Book at /portal/book or call me on +44 7443 357020. Home visits across Liverpool and Merseyside, online sessions UK-wide, evenings Monday to Friday, plus Saturday and Sunday daytimes. No GP referral needed.