Rotator Cuff Injuries

The pattern I look for is weakness that is out of proportion to pain, especially when I test one tendon against resistance, plus a story of sudden loss of strength or long-standing trouble with overhead use. Classic signs include the arm dropping when you try to lower it slowly from shoulder height (a drop-arm test), weakness turning the arm outward against resistance, or difficulty lifting the arm overhead without hiking up the shoulder blade. Clinical tests are imperfect, so when knowing whether there is a tear would change the plan, I flag it to your family doctor or specialist and refer you for an ultrasound or MRI.

Many tears can become pain-free and functional without surgery, even if the tendon itself does not knit back together. In the MOON Shoulder Group cohort (Kuhn and colleagues, JSES 2013), about 75% of people with atraumatic full-thickness tears had not had surgery two years after a structured exercise program, and at ten years physical therapy was still successful for more than 70% (Kuhn and colleagues, JBJS 2024). Trial data add nuance. Moosmayer and colleagues randomised 103 people with small to medium tears (up to 3 cm) to tendon repair or physiotherapy, and at 15 years repair gave better shoulder scores, less pain and more pain-free movement, while unrepaired tears had on average grown (JBJS 2024). So many atraumatic tears can be managed without surgery and stay functional, but repair may offer an advantage for selected tears, especially over the long term. Traumatic tears in younger, active people are a different conversation, and I refer on promptly when that applies.

Night pain is common with rotator cuff problems. Lying on the sore side or holding the arm in one position for a long time can aggravate it, but position is not the whole explanation, and a sensitive tendon can simply be more irritable at rest. I usually suggest sleeping on the other side with the sore arm supported forward on a pillow, or on your back with a small pillow under the elbow. Night pain often eases over a few weeks as the shoulder settles, though how quickly varies. Severe, constant pain that does not change with position needs a medical review.

Full recovery after arthroscopic rotator cuff repair generally takes 6 to 12 months, not the 6 weeks patients often expect. Typical milestones, in line with the American Society of Shoulder and Elbow Therapists' consensus statement on rehabilitation after arthroscopic rotator cuff repair (Thigpen and colleagues, J Shoulder Elbow Surg 2016), are: an early period of relative immobilisation, where the arm is only moved gently for you to protect the repair (protected passive range), restoration of active range of motion, progressive strengthening generally introduced around 12 weeks, and a staged return to higher demand activity over the following months. Re-tear rates in the literature range widely depending on tear size and patient factors, which is why graded loading matters.

Often yes, with modifications. Completely resting a painful tendon tends to leave it weaker still (deconditioning). Research from Littlewood and Lewis supports progressive loading as a core treatment. Early on I usually cut overhead pressing, upright rows, and behind-the-neck movements, keep loaded work below shoulder height, and add static cuff holds (isometrics) and shoulder blade work. As symptoms settle and strength returns, I progressively reintroduce overhead loading.

MRI is sensitive, but the bigger issue is the reverse: scans often show cuff changes in people with no shoulder pain. A 2014 review that pooled 30 studies (Teunis and colleagues) found rotator cuff abnormalities on scans in about 10% of people aged 20 and younger, rising to about 62% of those aged 80 and older, and a similar rise with age whether or not people had symptoms. So a scan has to be read alongside your symptoms and examination, and a tear on an image does not automatically mean surgery is needed.

Tendinopathy and partial tears often improve with appropriate loading, activity modification, and time, but unlike a bone, a structurally torn tendon does not reliably knit back together. What research does show is that pain and function can improve substantially even when the tear itself persists, because you are retraining the rest of the cuff and the shoulder blade muscles to share the load. Leaving symptoms entirely untreated tends to lead to moving around the problem and to stiffness that follows from it.

Painless weakness after a fall or sudden pull on the arm is a finding I take seriously. It can indicate a full-thickness traumatic rotator cuff tear, especially in patients under 65 who suddenly cannot lift the arm to shoulder level. Evidence suggests an earlier surgical opinion in this group improves outcomes, as the torn tendon pulls back and the muscle is gradually replaced by fat over months (fatty infiltration). In that situation I will refer for imaging and orthopaedic review quickly rather than watch and wait.