Were You Told You Need a Rotator Cuff Repair? Ask What Happens After.
Every year, hundreds of thousands of rotator cuff repairs are performed in the United States. Most of them follow the same basic approach: anchors placed in the bone, sutures passed through the torn tendon, the tendon pulled back down and secured. It works. Patients wake up from surgery with their tendon reattached.
And then, for a significant number of them, it tears again.
The re-tear rate after rotator cuff repair has been one of orthopedic surgery's most persistent and uncomfortable truths. For small tears, re-tear rates in published studies range from 20% to 40%. For large and massive tears, published failure rates climb as high as 94%. These are not outlier numbers from poor surgeons — they come from peer-reviewed studies examining carefully performed repairs by experienced surgeons using modern techniques and high-strength sutures and anchors.
The problem is not the repair. The problem is what happens to the repair after surgery.
Dr. Raffy Mirzayan has spent more than two decades studying why rotator cuff repairs fail — and what can be done to prevent it. He is a published author on biologic augmentation of rotator cuff repair, with papers in the American Journal of Orthopedics, JSES Reviews, Reports, and Techniques, and the Journal of the American Academy of Orthopaedic Surgeons, among others. He has lectured on this topic at national meetings and co-authored a landmark review article on the rationale for biologic augmentation that has become a reference in the field.
When Dr. Mirzayan repairs a rotator cuff, he does not stop at the repair itself. He addresses the biology.
Why Rotator Cuff Repairs Fail — and When
Understanding the failure pattern is the first step toward preventing it.
Research tracking patients with serial imaging after surgery has shown that most re-tears happen early — the majority within the first three to six months, often while the patient is still in a sling or just beginning physical therapy. The tendon reattaches initially, but before it has fully integrated into the bone, the mechanical load exceeds what the repair can sustain, and it pulls away.
The weakest link is not the anchor. It is not the suture. It is the interface between the suture and the tendon itself — a structure that, in many patients requiring surgery, is already degenerated, fragile, and poorly equipped to hold under stress.
This is why performing a technically excellent repair and then doing nothing more is, for many patients, not enough. The tendon needs help healing. The repair needs to be stronger from the moment the patient wakes up.
What Biologic Augmentation Means — and What Dr. Mirzayan Uses
Biologic augmentation refers to the use of additional materials — applied at the time of surgery — to reinforce the repair, improve healing, and reduce the risk of failure. Dr. Mirzayan is one of a relatively small number of surgeons in the United States who routinely incorporates biologic augmentation into rotator cuff repair, tailored to each patient based on tear size, tissue quality, age, and risk factors for re-tear.
Acellular Dermal Matrix (ADM)
Acellular dermal matrix — also called dermal allograft — is processed human tissue from which donor cells have been removed, leaving behind a collagen scaffold. When incorporated into a rotator cuff repair, ADM serves two purposes simultaneously: it mechanically reinforces the weakest point in the construct (the suture-tendon interface), and it provides a scaffold through which the patient's own fibroblasts, blood vessels, and growth factors can migrate, potentially accelerating and improving healing.
Dr. Mirzayan co-authored a review of ADM in rotator cuff surgery published in the American Journal of Orthopedics, and has used ADM in more than 100 patients across a range of applications including rotator cuff augmentation, superior capsule reconstruction, and as an interpositional graft for massive irreparable tears. He has developed and published a "BioWasher" technique in which small, preshaped pieces of ADM are incorporated directly into the repair construct — sandwiching the rotator cuff between two pieces of allograft to maximize the reinforcement of the suture-tendon interface. In an ongoing series using this technique, postoperative MRI at three months showed no re-tears at the repair site.
Dr. Mirzayan's BioWasher technique for rotator cuff augmentation is featured on the Arthrex website — the world's leading arthroscopic surgery company — whose educational resources are used by orthopedic surgeons in over 100 countries. View the technique here: RCR Repair Using the Knotless SwiveLock Anchor and ArthroFlex BioWasher Decellularized Dermis. Watch Dr Mirzayan demonstrate a Cuffmend augmentation with SpeedFlex for partial thickness rotator cuff tear.
A 2024 meta-analysis of randomized controlled trials published in Arthroscopy — on which Dr. Mirzayan was a co-author — found that patients whose repairs were augmented with acellular collagen matrix patch had a re-tear rate of just 11%, compared to 35% in patients who underwent standard repair without augmentation. Augmented patients also had significantly better shoulder function scores.
Human Amniotic Membrane (HAM)
Human amniotic membrane is a biologic tissue with potent anti-inflammatory properties and the ability to inhibit the enzymes — called matrix metalloproteinases, or MMPs — that have been found at high levels at rotator cuff tear sites and are thought to degrade the repair during the healing period.
Dr. Mirzayan published the first case series describing the interposition of human amniotic membrane at the bone-tendon interface of a full-thickness rotator cuff repair, in JSES Reviews, Reports, and Techniques (2022). His key finding: placing amnion at the repair site did not inhibit healing — a concern given amnion's known role as a scar inhibitor — and all eight patients in the series showed an intact rotator cuff on postoperative MRI. Functional outcome scores improved dramatically, with mean ASES scores rising from 24 preoperatively to 96 at follow-up.
Bone Marrow Aspirate Concentrate (BMAC)
Bone marrow aspirate concentrate delivers mesenchymal stem cells, platelets, and growth factors directly to the repair site. In a landmark study tracking patients for ten years after surgery, repairs augmented with bone marrow-derived stem cells showed an 87% intact cuff rate at final follow-up, compared to just 44% in non-augmented patients.
Dr. Mirzayan's BMAC harvesting technique for proximal humerus bone marrow aspiration is featured on the Arthrex website — the world's leading arthroscopic surgery company — whose educational resources are used by orthopedic surgeons in over 100 countries. View the technique here: Proximal Humerus Bone Marrow Aspiration
Subacromial Bursa
The subacromial bursa is the tissue layer that sits above the rotator cuff. In most rotator cuff surgery it is removed and discarded as debris. It is also one of the best sources of mesenchymal stem cells in the shoulder.
In a head-to-head laboratory comparison of four shoulder tissues - joint lining, subacromial bursa, torn tendon margin, and the residual tendon stump - bursa-derived cells yielded significantly more viable cells and retained their capacity to expand far better than cells taken from tendon. A separate study of 73 patients found that bursa-derived cells maintain high proliferation potential regardless of the patient's age, sex, body mass index, smoking status, tear size, retraction, or degree of fatty infiltration.
That last finding is why Dr. Mirzayan harvests it. In his own series of rotator cuff repairs with postoperative MRI, the single variable that separated the repairs that healed from those that did not was patient age. A cell source that does not decline with age is directly relevant to the patients most likely to fail.
Bone-Side Biologic Augmentation
Tendon-to-bone healing proceeds from the bone upward into the tendon. Most augmentation strategies address the tendon side of that interface. Dr. Mirzayan also treats the bone side.
He combines the harvested bursal tissue with a bone graft substitute and bone marrow aspirate concentrate to produce a flowable slurry, which is injected into the humeral head beneath the greater tuberosity - improving the quality of the bone the tendon has to heal into, rather than only the tissue that has to heal to it.
This is reasoned from established biology rather than established by clinical trial. The closest supporting evidence is Hernigou's ten-year study of marrow-derived cells delivered at the repair site, which found substantially better healing and durability. Dr. Mirzayan describes it to patients in exactly those terms.
Who Should Consider Biologic Augmentation?
Not every rotator cuff repair requires augmentation - but many more do than currently receive it. The patients at elevated risk are those with large or massive tears, significant retraction of the tendon, poor tissue quality found at the time of surgery, fatty infiltration of the muscle, a prior failed repair, older age, or systemic factors that impair healing such as smoking, diabetes or low bone density.
That is the clinical shorthand. The formal version is a published scoring system called the Rotator Cuff Healing Index, which combines six preoperative factors into a number that predicts healing - from a 94 percent healing rate at the low end to 14 percent at the high end. Dr. Mirzayan uses it, and augments any repair scoring above 4, because 0 to 4 is the band with a 94 percent healing rate.
There is no established threshold at which augmentation becomes obligatory, and surgeons who use the score draw the line in different places. Published algorithms put it at 7 or above, which accepts roughly a one-in-three failure rate first. It is a fair question to ask any surgeon which number they use.
When Dr. Mirzayan evaluates a patient for rotator cuff repair, the question he asks is not simply "Can I repair this tear?" The question is "What will it take for this repair to stay intact?" The answer determines what goes into the repair.
What to Expect: The Surgical Approach
Dr. Mirzayan performs rotator cuff repairs arthroscopically, through small portals rather than a large open incision. The specific repair construct — anchor configuration, suture technique, and augmentation strategy — is determined by what he finds at the time of surgery.
When dermal allograft augmentation is used, the graft is introduced through the arthroscopic cannula and positioned either as an onlay on top of the repair, as a biological interposition beneath the tendon, or incorporated directly into the repair using the BioWasher™ technique. When amnion is used, it is placed at the bone-tendon interface before the repair is completed. These steps add a modest amount of time to the procedure but do not change the recovery pathway in most cases.
The repair itself typically takes one to two hours. Most patients go home the same day.
Optimizing the Whole Patient: Why Surgery Is Only Part of the Answer
A rotator cuff repair is only as good as the body healing it.
This is a principle that most surgical practices overlook entirely — and one that Dr. Mirzayan takes seriously with every patient he treats. The biology of tendon-to-bone healing is complex, demanding, and highly dependent on the nutritional environment the body brings to the repair site. Augmenting the repair with allograft or biologics addresses one side of the equation. Making sure the patient's body has what it needs to heal addresses the other.
Nutritional Status and Re-Tear Risk
The evidence connecting poor nutritional status to worse surgical outcomes in orthopedics is growing. A study published in the Journal of Bone and Joint Surgery (2024) examined the relationship between nutritional status and rotator cuff repair outcomes in Japanese patients and found that malnutrition was associated with significantly higher re-tear rates — not because of technical failure, but because the body lacked the building blocks needed to rebuild tendon tissue at the repair site. This finding has meaningful implications for how surgeons prepare patients for surgery, and it is one that most practices have not yet incorporated into their protocols.
Dr. Mirzayan's Approach: Targeted Amino Acid Supplementation
Dr. Mirzayan recommends that his rotator cuff repair patients begin a targeted amino acid supplementation protocol before and after surgery. This is not a protein shake. It is not a general multivitamin. It is a perioperative nutrition program formulated specifically around the metabolic demands of surgical healing — with amino acid profiles designed to support collagen synthesis, reduce muscle breakdown, and provide the substrates the body needs during the critical early healing window.
Dr. Mirzayan recommends Xcelerated Recovery™, a perioperative recovery program designed for surgical patients. He uses the three-week bundle — one week before surgery and two weeks after — timed to coincide with the period of greatest metabolic demand around the procedure. Disclosure: Dr. Mirzayan believes in this product strongly enough to be an investor in the company; he recommends it because the science supports it and because he uses it himself and with his own patients.
The distinction matters: most patients are told to eat well or drink protein shakes and take vitamin C before surgery. What Dr. Mirzayan recommends is a targeted, evidence-informed approach to perioperative nutrition that reflects the same philosophy he brings to every other aspect of the repair — doing everything that can reasonably be done to give the healing process the best possible chance of success.
What This Means for You
When you come to Dr. Mirzayan for a rotator cuff repair, you will receive specific guidance on the supplementation protocol well in advance of your surgery date. The goal is to arrive at the operating room nutritionally prepared — and to spend the two weeks after surgery giving your body the resources it needs to hold the repair together while healing begins.
For out-of-state patients, this is easy to arrange remotely. The supplementation program can be ordered and delivered to your home before you travel to Los Angeles, and Dr. Mirzayan's team will walk you through the protocol during your pre-operative preparation.
Doxycycline
In revision surgery and in patients at high risk of failure, Dr. Mirzayan adds a course of doxycycline. It covers Cutibacterium acnes, an indolent organism that colonizes the shoulder and is a recognized cause of occult failure after revision surgery, and it inhibits matrix metalloproteinases - the enzymes that break down the extracellular matrix a healing repair is trying to build. This is an off-label use reasoned from mechanism rather than established by trial, and Dr. Mirzayan says so when he recommends it.
Traveling to Los Angeles for Your Rotator Cuff Repair
Dr. Mirzayan regularly treats patients from Las Vegas, Henderson, Phoenix, Scottsdale, and across the country who are seeking a level of expertise in rotator cuff surgery that is not available locally.
If you have been told you need a rotator cuff repair — particularly a large or massive tear, a revision surgery, or a repair that has already failed once — a virtual consultation with Dr. Mirzayan is a reasonable and low-commitment first step. Before you commit to surgery anywhere, you can meet him on video, share your imaging, and get his honest assessment of what your repair should include.
Dr. Mirzayan is an out-of-network provider, but many patients with commercial insurance — Blue Cross Blue Shield PPO, Aetna, Cigna, United Healthcare, and similar plans — find that their out-of-network benefits cover a substantial portion of the cost. His team will verify your benefits before your visit so you understand your financial picture before making any decisions.
Call (310) 746-5918 or contact us online to schedule your consultation.
Dr. Mirzayan's Published Research on Rotator Cuff Repair and Biologic Augmentation
Dr. Mirzayan has been a leading voice in the scientific literature on why rotator cuff repairs fail and what can be done to prevent it. The following peer-reviewed publications represent his contributions to this field:
Rationale for Biologic Augmentation of Rotator Cuff Repairs Mirzayan R, Weber AE, Petrigliano FA, Chahla J. Journal of the American Academy of Orthopaedic Surgeons, 2019. A comprehensive review of the evidence for biologic augmentation in rotator cuff surgery, covering dermal allografts, platelet-rich plasma, bone marrow concentrate, and mesenchymal stem cells. This paper has become a foundational reference for surgeons seeking to understand the science behind augmentation.
Acellular Dermal Matrix in Rotator Cuff Surgery Cooper J, Mirzayan R. American Journal of Orthopedics, 2016. A review of the biomechanical and clinical evidence supporting the use of acellular dermal matrix in rotator cuff repair, including augmentation of primary repairs, bridging of massive irreparable tears, and superior capsule reconstruction.
Orthopedic Applications of Acellular Human Dermal Allograft for Shoulder and Elbow Surgery Acevedo DC, Shore B, Mirzayan R. Orthopedic Clinics of North America, 2015. A detailed review of surgical techniques using human dermal allograft across a broad range of shoulder and elbow procedures, including Dr. Mirzayan's BioWasher™ technique for incorporating ADM directly into the rotator cuff repair construct. Postoperative MRI in 19 consecutive patients using this technique showed no re-tears at the repair site at three months.
Interposition of Human Amniotic Membrane at the Bone-Tendon Interface of a Full-Thickness Rotator Cuff Repair Mirzayan R, Suh BD. JSES Reviews, Reports, and Techniques, 2022. The first published case series describing the use of human amniotic membrane interposed between the rotator cuff tendon and bone at the time of repair. All eight patients demonstrated an intact repair on postoperative MRI. Mean ASES scores improved from 24 preoperatively to 96 at follow-up. This paper established that amnion does not interfere with rotator cuff healing and may reduce the destructive enzyme activity known to occur at tear sites.
Acellular Collagen Matrix Patch Augmentation of Arthroscopic Rotator Cuff Repair Reduces Re-Tear Rates: A Meta-analysis of Randomized Controlled Trials Hurley ET, Crook BS, Danilkowicz RM, Buldo-Licciardi M, Anakwenze O, Mirzayan R, Klifto CS, Jazrawi LM. Arthroscopy, 2024. A meta-analysis of five randomized controlled trials examining acellular collagen matrix patch augmentation in arthroscopic rotator cuff repair. Patients receiving augmentation had an 11% re-tear rate compared to 35% in the control group — roughly one-third the failure rate. Augmented patients also demonstrated significantly better Constant and ASES shoulder function scores.
Bone Marrow Stimulation for Arthroscopic Rotator Cuff Repair: A Meta-analysis of Randomized Controlled Trials Hurley ET, Crook BS, Danilkowicz RM, Jazrawi LM, Mirzayan R, Dickens JF, Anakwenze O, Klifto CS. American Journal of Sports Medicine, 2024. Bone marrow stimulation (BMS) is making small holes called microfracture or bone marrow venting to allow blood and bone marrow to come up and cover the tuberosity, the part of the ball where the tendon is repaired to. In theory, this is stimualting a healing response that will aid in healing of the rotator cuff. However, our meta-analysis of seven randomized controlled trials (Level 1 evidence, the highest level of evidence in scientific literature) did not support BMS as a modality to improve retear rates or clinical outcomes. The retear was 18.8% vs 21.0%, not significant, every clinical score equivalent in both groups. Essentially, BMS is not enough to aid in rotator cuff healing and other biologics need to be introduced to aid in healing.
How Dr. Mirzayan Thinks About the Evidence
Most of what happens in an operating room has never been tested in a randomized trial, and it never will be. A surgeon who claims to use only proven techniques is either not being accurate or is doing less than they know how to do. What a patient is entitled to is not a promise that everything is proven — it is an honest account of what is known, what is reasoned, and which is which.
Dr. Mirzayan sorts what he does into three tiers and will tell you which tier any part of your operation belongs to.
Supported by randomized evidence. Dermal allograft augmentation sits here. A meta-analysis of five randomized controlled trials, on which he was a co-author, found an 11 percent re-tear rate with augmentation compared with 35 percent without. He uses it routinely in appropriate patients because the data support it.
Supported by laboratory and mechanistic evidence. Harvesting subacromial bursa for its stem cell content sits here. Head-to-head laboratory comparison shows bursa is the best cell source in the shoulder, and its cells retain their capacity regardless of patient age. That is strong biological evidence without a randomized clinical trial behind it.
Reasoned from mechanism, without clinical trial evidence. Injecting a bursa, bone graft and marrow concentrate slurry into the humeral head sits here, as does doxycycline in revision and high-risk cases. These are extensions of established biology rather than proven protocols, and Dr. Mirzayan says so directly when he recommends them.
The discipline that makes this honest is what happens when something is tested and fails. Bone marrow stimulation — microfracture of the tuberosity, the so-called crimson duvet — is performed by a large proportion of shoulder surgeons. Dr. Mirzayan co-authored the Level 1 meta-analysis that tested it across seven randomized trials and 576 patients and found no benefit in re-tear rates or clinical outcomes. He no longer does it.
Adopting a technique because the mechanism is sound is reasonable. Continuing one after the evidence says it does not work is not. Patients are entitled to know which of those is happening in their operation.
Frequently Asked Questions
Why do so many rotator cuff repairs fail?
The rotator cuff tendon, particularly in older patients and larger tears, is often degenerative and fragile at the time of repair. Even a technically perfect repair places the tendon under load before it has fully healed to bone. The suture-tendon interface — where sutures pass through the tendon — is the weakest point in the construct, and suture pullout through degenerative tissue is the most common mechanism of failure.
What is the difference between a standard repair and an augmented repair?
A standard repair reattaches the tendon to bone using anchors and sutures. An augmented repair does the same — but adds biologic materials that mechanically reinforce the weakest point of the repair and provide a scaffold or biological environment that promotes more reliable healing.
Does augmentation make recovery longer?
No. The recovery timeline after augmented repair is essentially the same as after standard repair. Augmentation addresses the durability of the result, not the speed of early healing.
What if my repair has already failed once?
Revision rotator cuff surgery is one of the most challenging procedures in shoulder surgery, and it is an area where Dr. Mirzayan's experience and approach to augmentation are particularly relevant. The same factors that caused the first repair to fail — poor tissue quality, large tear size, inadequate biology — are still present, and addressing them is essential for a revision repair to succeed.
Does Dr. Mirzayan see out-of-state patients?
Yes. Dr. Mirzayan sees patients from across the United States, with a significant number traveling from Las Vegas, Phoenix, Scottsdale, and other western cities. Virtual consultations are available and are the typical starting point for out-of-state patients.
Does being out-of-network mean I will pay full price out of pocket?
Not necessarily. Many patients with commercial insurance — especially those with PPO plans or self-funded employer plans — have strong out-of-network benefits. Dr. Mirzayan's office will verify your coverage before your consultation so you have a clear picture of what to expect. Many patients are surprised by how affordable the right care can be.
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References:
Utsunomiya H, Uchida S, Sekiya I, Sakai A, Moridera K, Nakamura T. Isolation and characterization of human mesenchymal stem cells derived from shoulder tissues involved in rotator cuff tears. Am J Sports Med. 2013;41(3):657-668.
Muench LN, Baldino JB, Berthold DP, Kia C, Lebaschi A, Cote MP, McCarthy MB, Mazzocca AD. Subacromial bursa-derived cells demonstrate high proliferation potential regardless of patient demographics and rotator cuff tear characteristics. Arthroscopy. 2020;36(11):2794-2802.
Kwon J, Kim SH, Lee YH, Kim TI, Oh JH. The rotator cuff healing index: a new scoring system to predict rotator cuff healing after surgical repair. Am J Sports Med. 2019;47(1):173-180.
Jackson GR, Bedi A, Denard PJ. Graft augmentation of repairable rotator cuff tears: an algorithmic approach based on healing rates. Arthroscopy. 2022;38(7):2342-2347.
Hurley ET, Crook BS, Danilkowicz RM, Jazrawi LM, Mirzayan R, Dickens JF, Anakwenze O, Klifto CS. Bone marrow stimulation for arthroscopic rotator cuff repair: a meta-analysis of randomized controlled trials. Am J Sports Med. 2024;52(12):3167-3172.
About Dr. Mirzayan
Dr. Raffy Mirzayan, MD is a double-board certified orthopedic sports medicine surgeon at DOCS Health in Los Angeles, California. He is a recognized national and international expert in biologic augmentation of rotator cuff repair, with peer-reviewed publications in the American Journal of Sports Medicine, Arthroscopy, the Journal of the American Academy of Orthopaedic Surgeons, and JSES, and invited lectures at major orthopedic meetings across the United States and abroad. He is a Clinical Professor of Orthopaedic Surgery at USC and has performed more than 1,000 rotator cuff repairs over a 25-year career. Virtual consultations are available for patients in Las Vegas, Phoenix, Scottsdale, and nationwide.
DOCS Health | 8436 W 3rd St #800, Los Angeles, CA 90048 | (310) 746-5918 | raffymirzayan.com
