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ACL Tears

70% of ACL tears can be healed without surgery

At Regenexx our goal is to save your ACL, not replace it. Regenexx invented and developed a procedure called the perc-ACLR which stands for percutaneous ACL repair procedure for individuals who may be considering surgery due to a partial or complete non-retracted ACL tear. Skip the ACL surgery and repair your ACL through your body’s natural healing agents.

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Avoid ACL Surgery with Regenexx

Have you been told that invasive surgery is your only option to fix your torn ACL? You have other options when it comes to treating your ACL injury. In fact, your body is built to repair itself. Interventional orthopedics provides a non-surgical alternative that uses your own cells to repair the damage. It uses precise image-guided injections of your own body’s healing agents that can help repair tissue.

An injury to the anterior cruciate ligament (ACL) can cause substantial difficulty with basic mobility and function and is especially common among athletes, including professional ones. From NBA point guard Derrick Rose to U.S. soccer player Alex Morgan, ACL injuries and ACL surgeries occur in just about every sport. Strains or sprains to the ACL typically heal with rest, but at the point of ACL tear, the main treatment option is ACL surgery involving applying a tissue graft taken from elsewhere in the body or a cadaver. This graft attaches at a steeper angle than the original tendon which causes more compression on the cartilage in the knee and greatly increased chance of osteoarthritis while the position sense and strength in the repaired knee are never the same. In addition, as is typical with orthopedic surgeries, patients who get this surgery are significantly more likely to experience additional knee injuries. The Regenexx perc-ACLR procedure is an injection-based procedure that can replace 70% of ACL-repair surgeries. During this outpatient procedure, our expert physicians use precise image guidance to inject custom concentrations of your body’s natural healing agents into the precise areas of damage to tighten and stabilize your knee joint for better function and mobility. Call our patient care coordinators today to get started on your path to ACL recovery.

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Regenexx is a world-wide network of specially trained physicians providing the world's most advanced, research-driven, regenerative-medicine treatments in North America, Europe, the Middle East, Asia and Australia.

How Does the Perc-ACLR Procedure Work?

The procedure usually occurs over the course of one-day, although each patient and their ACL injury varies. There are some situations where a pre-injection will be used to define the status of the ligament architecture to better decide candidacy.

During the stem-cell procedure, a local anesthetic is applied, allowing the physician to draw bone marrow from the back of your iliac crest using precise imaging guidance. This is a specialized draw technique that is specific to Regenexx. This usually takes 30 to 40 minutes and is significantly less invasive than a bone marrow biopsy.

Once the marrow is drawn and processed by a Regenexx lab technician, you will have time to relax before the re-injection of the harvested stem cells into your ACL. The re-injection happens between three to six hours after the bone marrow aspirate is drawn. Specialized stem cell friendly local anesthesia is used before the re-injection takes place, using real-time imaging guidance which in this case is fluoroscopy. The MRI imaging is used to carefully map the torn ligament along with the x-ray contrast during the procedure. All of that provides a roadmap for the doctor to implant the stem cells into the damaged areas of the ligament. This part will usually take about 40 minutes to an hour. Patients may be asked to stay in the clinic 30 to 60 minutes after re-injection.


What does a torn ACL recovery time look like after the outpatient procedure? During the first 24 hours, you should limit your joint activity/range of motion and wear the recommended boot or knee brace.

Your joint will be sore for one to three days, but as most patients note, they see improvement to their ACL within the first month. Pain will become less severe and frequent and within five to seven days, patients can resume light activities and begin physical therapy.

Six to eight weeks later, patients can begin to resume more vigorous exercises and regular routines and will continue to see ACL improvement and healing month after month. We should see maximum ligament repair and tightening in younger patients at 3-6 months and in older patients up to 9-months.

However, results vary by patient and depend on the condition of the area treated, age, and general health of the patient.

Click here to learn more about the procedure experience.

Regenexx Benefits

  • Increased function
  • Pain reduction
  • Most individuals do not experience extensive downtime
  • Minimal time off of work
  • No surgery
  • Minimal use of mobility tools (crutches, etc.)
  • Minimal disruption of regular routine

Regenexx Results

Since 2005 we have conducted research, accumulated patient results data, and obtained direct feedback from our patients. With one purpose in mind. To help you make an informed, confident decision to treat your condition.

Patient Results

Regenexx has performed more than 69,000 procedures worldwide. Regenexx keeps records of Regenexx procedures performed by physicians in our network in our outcomes database.

View Outcomes

Before & After MRI Images

We have accumulated patient imaging before and after a Regenexx procedure to document anatomy change.

MRI Results

The Knee Owner’s Manual

How to Avoid Game Changing, Invasive Knee Surgeries and Stay Active as You Age

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Are You A Candidate for the Regenexx ACL Tears Procedure?

Speak with a Regenexx patient liaison to learn more about how we can help.

  • We listen to your specific situation and concerns.
  • We answer questions related to your condition and Regenexx.
  • We explain the patient process for considering a acl tears procedure.
  • We can schedule a time to meet with a Regenexx physician near you.
Get Started 855-330-5818

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*DISCLAIMER: Like all medical procedures, Regenexx® Procedures have a success and failure rate. Patient reviews and testimonials on this site should not be interpreted as a statement on the effectiveness of our treatments for anyone else.

Providers listed on the Regenexx website are for informational purposes only and are not a recommendation from Regenexx for a specific provider or a guarantee of the outcome of any treatment you receive.