LET'S TALK. 303-429-6448

The Perc-MTI Your Trusted Alternative to Meniscus Surgery

Percutaneous Meniscal Trephination & Implantation  

Looking for “Stem Cell Therapy for Meniscus Tears”? What you really need is the the most trusted alternative to mensicus surgery. 

Want to Avoid Meniscus Surgery?

If meniscus surgery shouldn’t be your first option, what is the alternative? Much like interventional cardiology has gained a foothold over cardiac surgery over the past few decades, interventional orthopedics is providing nonsurgical alternatives to many orthopedic surgeries available today. And meniscus repair is one of them. The procedure is going by the name “Percutaneous Meniscal Trephination and Implantation,” or the “Perc-MTI,” for short. 

This Regenexx procedure is a breakthrough, non-surgical treatment for people suffering from knee pain due to a meniscus tear, or other knee pain resulting from common orthopedic conditions. It is a minimally invasive same-day injection procedure that may help incite healing of the injured tissue and allow the individual to avoid the painful and lengthy recovery that typically follows surgery, as well as the long-term impact to the knee as a result of removing sections of meniscus.

Meet the Perc-MTI



Is Meniscus Surgery a Scam? Do your research. Trust these sources:

Common Knee Surgery Does Very Little for Some, Study Suggests

Read More

Why “Useless” Surgery is Still Popular

Read More

Common Arthrosporic Knee Surgery No Better Than “Sham” Version, Researchers Say

Read More

Types of Meniscus Tears We Treat

The Meniscus is the most commonly injured part of the knee. In young people a meniscus tear is usually caused by a traumatic twisting injury. In older people, in addition to traumatic injury, tears are often caused by weakness of the meniscus caused by degenerative changes in the knee joint.

Medial Meniscus Tear

A tear on medial meniscus often caused traumatically by sudden changes of direction and force in sports like football, soccer, basketball, volleyball and skiing. They can also be caused by repetitive use injuries like distance running and cycling and degenerative changes to the knee in older patients. Medial Meniscus Tears respond very well to our treatments.

Bucket Handle Meniscus Tear

The entire inner rim of the medial meniscus can be torn in what is called a bucket handle tear. These tears usually occur in an area of good blood supply in the meniscus. While these tears when caught very early are the one case that can be sutured, our injections can accomplish the same thing without the risks and recovery time of surgery.

Complex Degenerative Meniscus Tear

Just like other tissues of the body, the tissue that forms the menisci weakens with age, making the menisci prone to degeneration and tearing with just minor injury or no particular injury at all. These tears of the meniscus are usually seen as a part of the overall condition of osteoarthritis of the knees in older adults and cause the menisci to fray and tear in multiple directions. Thankfully, in these cases, there are so many tears, most surgeons won’t even try to repair them surgically.

Meniscus Flap Tear

The meniscus can also have a flap tear from the inner rim. These tears usually involve a small percentage of the meniscus and do not have the ability to heal on their own because they occur in an area that does not have good blood supply. Flap tears are the type most commonly “trimmed” or “shaved”, (removed) leading to long term issues. BEWARE of any removal of meniscus tissue. Instead use our treatments to heal the tear.

Regenexx Alternative to Knee Meniscus Surgery



Get back to doing the things you love,
faster and without surgery.

Request an Appointment Today!

What goes into the Perc-MTI? – 4 Major Things:

1. Flex Lab Platform

We use advanced, proprietary lab-processing techniques to ensure that we have the right concentrations of the right cells to treat your specific injury.

2. Image Guidance

To maximize the efficacy of our procedures, C-Arm Fluoroscopy is utilized to help place the concentrated Orthobiologics directly where they are most needed to bring about the best outcome.

3. Expertise & Training

To perform this precise, image-guided procedure, it takes Board certified physicians trained on specific equipment. The doctors at Centeno-Schultz Clinic are practitioners and instructors of Interventional Orthopedics.

4. Orthobiologics

Orthobiologics refers to substances that are naturally derived substances from the body, e.g. stem cells & blood platelets. These substances, when placed well, have the ability to help bones, joints, muscles, and tendons mend.

Before and After MRI of Perc-MTI Procedure

Patient 1:



Patient 2:



Outcomes in Terms of Function


Patients value getting back to the activities they love, whether that is walking, running, skiing, or high-level sports. Prior to treatment, patients report that they are limited to an average of 52% of their optimal function. After receiving treatment, they report averages up to 74%. The functional questionnaire represented here is the Lower Extremity Functional Scale (LEFS).

Last updated on 2/2/2021

Outcomes in Terms of Joint Pain


A main priority of Regenexx is to decrease joint pain. Prior to receiving treatment, patients report average pain of over 4/10. After only 1-month, pain levels decrease to an average of 2.3/10, a decrease of 47%. Pain levels decrease further over time. The questionnaire used is the Numeric Pain Scale (NPS).

Last updated on 2/2/2021

Outcomes in Terms of Overall Condition

A main priority of Regenexx is to decrease joint pain. Prior to receiving treatment, patients report average pain of over 4/10. After only 1-month, pain levels decrease to an average of 2.3/10, a decrease of 47%. Pain levels decrease further over time. The questionnaire used is the Numeric Pain Scale (NPS).

Last updated on 2/2/2021

Partial knee meniscectomy is a very common surgery that involves removing the torn part of the meniscus, which is a natural shock absorber for the knee. In fact, in America alone, we perform about 700,000 of these surgeries per year, making it one of the most common orthopedic surgeries. While most patients think they’re getting a meniscus repair procedure, in fact, 96% of these surgeries just whack out a piece of the shock absorber, leaving your knee less and not more protected.

If you’re 35 or over, meniscus tears as are as common and about as important as wrinkles. This means that the idea that you hurt your knee and then an MRI shows a meniscus tear and that meniscus tear is causing your pain is no better than chance. This is because many patients over 35 are walking around with meniscus tears and have no pain. Hence, your first job after being told you have a meniscus tear on MRI is deciding whether it’s causing pain!

Your family physician will probably only provide two options: conservative measures to see if the meniscus heals on its own and, if it doesn’t, meniscus surgery. However, you actually have a third option to consider, and that is the interventional orthopedics approach to meniscus tears.

More than 90% of the time meniscus surgery does not actually “repair” the meniscus, but rather removes the torn pieces. Given its shock absorbing function, less shock absorber means more shock gets delivered to the cartilage and bone. After a while, this living tissue reacts, and cartilage is lost, and the knee begins to form new bone spurs. Multiple studies have calculated increased force versus the amount of meniscus removed and its profound negative consequences to the long-term function and stability of the knee. In addition, papers have confirmed that removing parts of the meniscus results in knee arthritis.

Most remarkably, recent research has shown that meniscus surgery, on average, is no more effective than a sham surgery or physical therapy in its positive effects, however physical therapy has no negative impact. Despite this, almost a million meniscectomies are still performed every year.