Fixing a torn rotator cuff depends on the size of the tear, your age, and how much it limits your daily life. Many partial tears and even some full-thickness tears improve with physical therapy alone. In one large screening study, 276 out of 954 patients recovered enough with physical therapy that they never needed surgery. When surgery is necessary, both arthroscopic and mini-open techniques produce large improvements in pain and function, with equivalent outcomes between the two approaches.
Partial Tears vs. Full-Thickness Tears
The distinction between a partial tear and a full-thickness tear shapes everything that follows. A partial tear means some tendon fibers are damaged but the tendon isn’t completely severed. These tears often respond well to non-surgical treatment. A full-thickness tear goes all the way through the tendon, creating a hole or completely detaching it from the bone. Full-thickness tears are further classified by how many tendons are involved and how far the tendon has pulled back from its attachment point.
Tear size is measured in centimeters and grouped into four categories: small (under 1 cm), medium (1 to 3 cm), large (3 to 5 cm), and massive (over 5 cm). Size matters because it directly predicts whether the tear will heal after repair. Tears under 2 cm have an 89% healing rate after surgery, while tears 2 cm or larger drop to about 65%.
When Non-Surgical Treatment Works
Conservative treatment typically follows a structured six-month rehabilitation program broken into four phases. The first phase focuses on pain control and gentle self-assisted exercises. In the second phase, you move into passive stretching and active movement in a pool, which reduces stress on the shoulder while allowing motion. The third phase adds strengthening exercises using elastic bands, targeting the muscles that stabilize the shoulder and the front of the deltoid. The final phase is a home maintenance program combining stretching, strengthening, and mobility work.
A typical schedule starts with three sessions per week of guided movement for the first two weeks, then transitions to pool-based therapy three times a week for a month. After that, supervised strengthening drops to twice a week while you begin doing exercises at home. By month four, most of the work shifts to independent home exercise focusing on the muscles that pull the upper arm bone downward (counteracting the upward pull that causes impingement) and the rotators that control shoulder stability.
Anti-inflammatory medications help manage flare-ups of acute pain but aren’t a long-term solution on their own. Avoiding repetitive overhead movements, the kind common in painting, swimming, or throwing sports, reduces ongoing stress on the damaged tendon.
Injections: Steroids vs. PRP
Corticosteroid injections have long been the standard for quick pain relief in rotator cuff injuries. Platelet-rich plasma (PRP) injections, which use concentrated healing factors from your own blood, are a newer alternative. A recent meta-analysis comparing the two found that PRP provides better pain relief in the first three to six weeks. After 12 weeks, pain scores between the two treatments are essentially equal.
Where PRP pulls ahead is in functional improvement. Shoulder function scores at 12 and 24 weeks favor PRP over steroids, and overall shoulder performance at six months is significantly better with PRP. The tradeoff is cost: PRP is rarely covered by insurance, while steroid injections typically are. Neither injection repairs a torn tendon. They manage symptoms while you pursue rehabilitation or decide on surgery.
When Surgery Becomes the Right Call
The American Academy of Orthopaedic Surgeons identifies several scenarios where surgery makes sense:
- Persistent pain that hasn’t improved after 6 to 12 months of conservative treatment
- Large tears over 3 cm where the surrounding tendon quality is still good
- Significant weakness and loss of function that limits daily activities
- Acute injuries where the tear was caused by a sudden event like a fall
If you’re active and rely on overhead arm use for work or sports, your surgeon may recommend repair sooner rather than waiting. Acute traumatic tears in younger patients are often repaired promptly because delay allows the tendon to retract and the muscle to weaken, making later repair more difficult.
What Happens During Surgery
The two main surgical approaches are arthroscopic repair (using small incisions and a camera) and mini-open repair (a slightly larger incision that allows direct access to the tendon). A randomized trial of 274 patients found no meaningful difference between the two. Quality-of-life scores improved from about 40 out of 100 before surgery to 89 (arthroscopic) and 93 (mini-open) at two years. Range of motion and strength recovered similarly in both groups. Opioid use dropped from 21% before surgery to 5% afterward.
Your surgeon’s recommendation usually depends on the tear’s location, size, and their own experience with each technique. What matters most is that the tendon is reattached securely to bone, regardless of how the surgeon gets there.
Healing Rates by Age and Tear Size
Not every surgical repair heals completely. A large randomized trial found an overall healing rate of 56% at 12 months on MRI, though many patients with incomplete healing on imaging still report good pain relief and function. Healing rates vary substantially by age and tear size:
For a 50-year-old, a small tear has about a 74% chance of complete healing, a medium tear 78%, a large tear 63%, and a massive tear 43%. By age 70, those numbers drop to 54%, 60%, 41%, and 24% respectively. Age is an independent factor in healing, meaning it reduces your odds even after accounting for tear size. Massive tears are the only size category that independently predicts failure to heal regardless of age.
Retear rates follow a similar age pattern. In a series of 1,600 patients from a single surgeon, retear rates were 5% for patients under 50, 10% for ages 50 to 59, 15% for ages 60 to 69, 25% for ages 70 to 79, and 34% for those over 80. Revision surgery carries roughly double the failure risk of an initial repair, with retear rates around 40%.
Recovery After Surgery
Recovery from rotator cuff repair is slow by design. The tendon needs time to reattach to bone, and pushing too hard too early is one of the main causes of retear. On the first day after surgery, you’ll begin gentle passive exercises like pendulum swings, where you lean forward and let your arm hang and sway. A therapist may also guide your arm through passive forward flexion, moving it for you rather than having you use your own muscles.
For the first six weeks, your arm stays in a sling, including while sleeping. Sleeping upright in a recliner or propped up in bed is more comfortable than lying flat. Placing a pillow between your body and your arm, and another behind your elbow, keeps the shoulder in a slightly open position that reduces pressure on the repair.
At six weeks, you begin active-assisted motion, meaning you start using your own muscles with some help. At three months, light sports activities are allowed. Full return to demanding shoulder activities, like recreational throwing sports, overhead lifting, or swimming, comes at six months. This timeline can vary based on tear size, repair quality, and individual healing, but the six-month mark is a reliable general target for getting back to normal.
Large and Irreparable Tears
Some tears, particularly massive chronic tears where the muscle has been replaced by fat, cannot be repaired by simply reattaching the tendon. When the bone where the tendon attaches has deteriorated significantly or the muscle itself has wasted away, a standard repair is unlikely to hold. In older patients with this level of damage, a reverse shoulder replacement may be the most reliable option. This type of joint replacement changes the mechanics of the shoulder so that the deltoid muscle takes over the work the rotator cuff can no longer do, restoring overhead reach and reducing pain.