PRP can help a partial rotator cuff tear or a painful, degenerating tendon. It cannot reattach a tendon that has torn all the way through, or a labrum that has pulled away from the bone. Those are mechanical problems, and an injection does not sew anything back together. For partial tears the evidence is genuinely mixed: a 2026 meta-analysis of ten randomized trials found no difference from cortisone at three months and a modest advantage for PRP at six months, and the 2025 orthopedic guideline does not support routine PRP for these tears. That is the honest starting point.
People asking this in Colorado usually have one of two stories: a shoulder that has ached for months with no single injury, or an MRI report that used the word tear. Those are different problems, and they get different answers.
What the trials actually show
The pooled result: similar early, modestly better later
A 2026 meta-analysis in Knee Surgery, Sports Traumatology, Arthroscopy pooled ten randomized trials and 591 patients with rotator cuff tendinopathy or partial tears. Pain and patient-reported outcomes were no different from cortisone at three to six weeks or at three months. At six months PRP scored better on two shoulder function scales, with fewer adverse events, and the authors called the gain statistically significant but clinically modest. Our PRP for shoulder pain page covers how we approach it.
Individual trials disagree
A 2021 double-blind trial in partial-thickness tears found PRP gave better short-term pain relief and function than cortisone. A 2025 double-blind trial of 107 patients found the opposite, with cortisone giving lower pain scores at three and six months. When good trials point in different directions, the right conclusion is uncertainty, and the right plan is one built on your tear rather than on a headline.
What the guideline says
The American Academy of Orthopaedic Surgeons updated its rotator cuff guideline in 2025. It does not support routine PRP for rotator cuff tendinopathy or partial tears, and says routine PRP in the non-operative care of full-thickness tears may not be indicated. Routine is the key word: the guideline argues against PRP as a default, which is one more reason the evaluation comes before the injection. More on rotator cuff tears.
The labrum is a different question
A labrum that is frayed and painful and a labrum that has pulled away from the socket are not the same injury. The first is sometimes managed without surgery; the second is a structural problem an injection cannot reattach, and if your shoulder slips or dislocates, a surgical opinion comes first. We discuss the options, including when surgery is the right call, in surgery or biologics for a torn labrum.
When a surgeon comes first
These point toward a tear an injection cannot fix, and we would send you to an orthopedic surgeon rather than inject.
- A full-thickness rotator cuff tear, especially after a fall or a clear injury
- Sudden loss of the ability to lift the arm
- A labrum that has detached, often with the shoulder slipping or dislocating
- Weakness that is getting worse over weeks rather than holding steady
- A younger, active patient with an acute traumatic tear, where early repair may matter
Before you book, ask
- Is my tear partial or full-thickness, and who read the imaging?
- What do the trials show for my kind of tear, including the ones that disagree?
- Will the injection be placed under live ultrasound?
The answer to be wary of
If a clinic tells you PRP will heal any rotator cuff tear, ask what it would do for a full-thickness tear. The honest answer involves a surgeon. A clinic that never says so is selling an injection, not solving a shoulder.
Frequently asked questions
Can PRP heal a torn rotator cuff?
PRP is discussed for partial-thickness tears and tendinopathy, not for tears that go all the way through. In a 2026 meta-analysis of ten randomized trials it performed like cortisone at three months and modestly better at six months on shoulder function. It does not reattach a completely torn tendon. The 2025 orthopedic guideline does not support routine PRP for these tears, so the honest answer is that it can help some partial tears and tendinopathy, and an evaluation decides whether yours is one of them.
Can PRP fix a torn labrum?
PRP cannot reattach a labrum that has pulled away from the bone, because that is a mechanical injury. A labrum that is frayed and painful but stable is a different situation, and non-surgical care is sometimes discussed there. The question that decides it is whether the labrum is stable. If your shoulder slips or dislocates, a surgical opinion comes first.
Is PRP better than cortisone for a rotator cuff tear?
Not at first, and only modestly later. A 2026 meta-analysis found no difference at three months and a modest PRP advantage at six months, with fewer adverse events. Individual trials disagree: a 2021 trial favored PRP in the short term and a 2025 trial favored cortisone at three and six months. A 2025 review notes that repeated cortisone may impair tendon healing, which is part of why some patients choose PRP.
What does the AAOS guideline say about PRP for the rotator cuff?
The American Academy of Orthopaedic Surgeons updated its rotator cuff guideline in 2025. It does not support the routine use of PRP for rotator cuff tendinopathy or partial tears, and it says routine PRP in the non-operative care of full-thickness tears may not be indicated. It argues against PRP as a default for everyone, which is consistent with using it selectively, after an evaluation, for the tears the evidence fits best.
How do I know if my rotator cuff tear is partial or full-thickness?
An MRI or a diagnostic ultrasound usually tells you, and the report will say partial or full-thickness. Symptoms help too: a sudden loss of the ability to lift the arm after an injury suggests a larger tear. We use diagnostic ultrasound at the evaluation and review any imaging you bring, because the answer changes the plan.
Should I have surgery or PRP for my rotator cuff?
It depends on the tear. A full-thickness tear, especially after a fall or in a younger active person, often needs a surgical opinion, and we will refer you. A partial tear or tendinopathy is usually treated first without surgery, with strengthening at the centre, and PRP is one option to discuss alongside it. We would rather send you to a surgeon than inject a tear that needs repair.
Is PRP for a rotator cuff covered by insurance in Colorado?
Usually not. Most commercial insurers treat PRP for orthopedic conditions as investigational, so the procedure is self-pay, while HSA and FSA funds typically apply. That is one more reason to be sure your tear is one the evidence supports before you pay for it.
How long after PRP will my shoulder feel better?
Expect a few sore days first, because PRP starts a repair response. In pooled trials the difference from cortisone appeared at six months rather than at three, so this is a treatment you judge over months, alongside a strengthening programme, not over the first week.
Find out what your shoulder actually needs
Same-week evaluations in Boulder with Aneesh Garg, DO, CAQ. He examines the shoulder, uses diagnostic ultrasound, reviews your MRI, and tells you whether PRP, strengthening or a surgeon is the right next step. Every Dynamic PRP+ injection is performed by him under live ultrasound.
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1790 30th Street Suite 270 · Boulder, CO 80301 · 303-997-1733