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Meniscus Tear MRI?-Please Read This

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Meniscus tear MRI

Key points:

  • Meniscus tears in middle-aged or older people are as important as wrinkles – they are a sign of normal aging
  • New research shows that all sorts of once serious findings exist in the knees of patients without pain
  • Many studies now show that the most commonly used surgery to treat meniscus tears doesn’t work

Meniscus tear MRI is a common imaging technique used when patients have knee pain. Regrettably, when a meniscus tear is seen on MRI, what happens next is often surgery. However, many research studies have been done in this area including a new one using the best MRI machine currently available and they all say the same thing. Take your meniscus tear finding on MRI with a big grain of salt and stay away from surgery. Let me explain.

What is Meniscus Tear MRI?

MRI uses magnetic fields to see tissue. It’s often used to visualize a tear in the meniscus, which is a figure-8 shaped structure that cushions the bones of the knee joint. Regrettably, this is often where the problems start. Why? Turns out meniscus tears may be one of the biggest medical scams ever devised. Surprised? Read on.

The History of MRI Findings and Knee Pain

You would think that if your doctor sees a problem like a meniscus tear on your MRI that this would be the cause of your knee pain. After all, something or nothing happened and your knee began to hurt. Hence, it makes sense that the cause of that pain could be seen on an MRI scan. However, the hard truth is more complex.

Back in 2008 researchers publishing in the New England Journal of Medicine reported that most people over age 35 without knee pain had everything from meniscus tears to cartilage loss on their MRI’s (1). These findings began the first major questioning of whether meniscus tear MRI had much value. Meaning, were meniscus tears a problem or just a function of normal aging like wrinkles?

As more research came together, Scandinavian scientists in 2014 published an editorial that physicians and patients alike should look at meniscus tears with the same diagnostic weight we give wrinkles (2). Again, that meniscus tears were about as important as wrinkles on your face, they are simply of a sign of normal aging.

Do you want to learn more about how to read your knee MRI? See my video below:

The New Meniscus Tear MRI Study

The new research used 3 Tesla MRI in 230 knees of patients without knee pain (9). These MRI scanners are the most powerful scanners with double to triple the resolution of the MRI machines in current use. Hence, these machines see more stuff that could be wrong with the knee when compared to most MRI’s.

What did they find? The MRI’s showed abnormalities in 97% of the non-painful knees. 30% had meniscus tears, cartilage and bone marrow lesions at the knee cap area (patellofemoral). About 1/3 of the knees had severe cartilage lesions.  Tendon damage was detected in about 1 in 5 patients.

Remember, these were patients who had NO knee pain. Hence if so many patients have big problems on their knee MRI’s and have no pain, why are we freaking out about meniscus tears on MRI’s when patients have knee pain? Let’s dig in further.

Do All Meniscus Tears Need Surgery? Should I Get Meniscus Surgery?

So if most meniscus tears in patients who are middle-aged and older aren’t likely to be causing pain and are simply signs of normal aging, should you get surgery? No. In addition, we now have multiple large high-level studies that the most common surgery performed, Arthroscopic Partial Meniscectomy, doesn’t work (10-12). Why then is it offered to millions? Great question.

What Else Can be Done if My Knee Hurts?

Steroid Injections

These are medications that can reduce swelling, also known as cortisone. The problem is that recent research shows that the injections don’t work as well as we thought and destroy normal cartilage (13).

Viscosupplementation

This is a fancy word for an injection of a specialized lubricating gel. These products mimic the natural fluid (synovial fluid) in the knee. Brand names include Orthovisc, Synvisc, Supartz, and Euflexxa. Do these injections work? That research is all over the map at this point, meaning some studies are positive and others negative (14, 15). However, overall, these shots seem to work for about 6 months. The good news? There isn’t research that shows they hurt cartilage and most studies point in the direction of these products helping arthritis (16).

PRP

PRP is created by concentrating platelets from the patient’s blood. The platelets in PRP then release growth factors that can help reduce swelling and help damaged cartilage cells. The research on PRP as a knee arthritis treatment is very good with multiple studies showing that PRP beats viscosupplementation (17). However, these injections are not yet covered by most insurance plans, with costs ranging about $1-2,000 USD per PRP injection. Despite this, Regenexx has been able to obtain coverage from large self-insured employers.

The upshot? Meniscus tear MRI findings are not as big a deal as we once thought. Hence, please be careful about choosing procedures that don’t chop out your meniscus based on a tear that was likely there before your knee began to hurt! You meniscus tears are simply a sign of normal aging!

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References:

(1) Englund M, Guermazi A, Gale D, et al. Incidental meniscal findings on knee MRI in middle-aged and elderly persons. N Engl J Med. 2008;359(11):1108–1115.
(2) Risberg MA, Degenerative meniscus tears should be looked upon as wrinkles with age—and should be treated accordingly. 
(3) Montgomery, SR. Cross-sectional analysis of trends in meniscectomy and meniscus repair. Orthopedics. 2013;36(8):e1007-e1013
(4) Finnish Degenerative Meniscal Lesion Study (FIDELITY) Group. Arthroscopic Partial Meniscectomy versus Sham Surgery for a Degenerative Meniscal Tear. N Engl J Med 2013; 369:2515-2524
(5) Katz JN, Brophy RH, Surgery versus Physical Therapy for a Meniscal Tear and Osteoarthritis. N Engl J Med 2013; 368:1675-1684
(6) Sihvonen R, Englund M, Mechanical Symptoms and Arthroscopic Partial Meniscectomy in Patients With Degenerative Meniscus Tear: A Secondary Analysis of a Randomized Trial. Ann Intern Med. [Epub ahead of print 9 February 2016]164:449–455. doi: 10.7326/M15-0899
(7) Stahel PF, Wang P, Hutfless S, et al. Surgeon Practice Patterns of Arthroscopic Partial Meniscectomy for Degenerative Disease in the United StatesA Measure of Low-Value CareJAMA Surg. 2018;153(5):494–496.
(8) Roemer FW, Kwoh CK, Hannon MJ, et al. Partial meniscectomy is associated with increased risk of incident radiographic osteoarthritis and worsening cartilage damage in the following year. Eur Radiol. 2017;27(1):404–413.
(9) Horga LM, Hirschmann AC, Henckel J, Fotiadou A, Di Laura A, Torlasco C, D’Silva A, Sharma S, Moon JC, Hart AJ. Prevalence of abnormal findings in 230 knees of asymptomatic adults using 3.0 T MRI. Skeletal Radiol. 2020 Feb 14. doi: 10.1007/s00256-020-03394-z.
(10) Katz JN, Brophy RH, Chaisson CE, et al. Surgery versus physical therapy for a meniscal tear and osteoarthritis [published correction appears in N Engl J Med. 2013 Aug 15;369(7):683]. N Engl J Med. 2013;368(18):1675–1684. doi:10.1056/NEJMoa1301408
(11) Sihvonen R, Paavola M, Malmivaara A, Itälä A, Joukainen A, Nurmi H, Kalske J, Järvinen TL; Finnish Degenerative Meniscal Lesion Study (FIDELITY) Group. Arthroscopic partial meniscectomy versus sham surgery for a degenerative meniscal tear. N Engl J Med. 2013 Dec 26;369(26):2515-24. doi: 10.1056/NEJMoa1305189.
(12) Sihvonen R, Englund M, Turkiewicz A, Järvinen TL; Finnish Degenerative Meniscal Lesion Study Group. Mechanical Symptoms and Arthroscopic Partial Meniscectomy in Patients With Degenerative Meniscus Tear: A Secondary Analysis of a Randomized Trial. Ann Intern Med. 2016 Apr 5;164(7):449-55. doi: 10.7326/M15-0899.
(13) McAlindon TE, LaValley MP, Harvey WF, et al. Effect of Intra-articular Triamcinolone vs Saline on Knee Cartilage Volume and Pain in Patients With Knee Osteoarthritis: A Randomized Clinical Trial. JAMA.2017;317(19):1967–1975. doi: 10.1001/jama.2017.5283
(14) Rutjes AW, Jüni P, da Costa BR, et al. Viscosupplementation for Osteoarthritis of the KneeA Systematic Review and Meta-analysis. Ann Intern Med. 2012;157:180–191. doi: 10.7326/0003-4819-157-3-201208070-00473
(15) Strand V, McIntyre LF, Beach WR, Miller LE, Block JE. Safety and efficacy of US-approved viscosupplements for knee osteoarthritis: a systematic review and meta-analysis of randomized, saline-controlled trials. J Pain Res. 2015;8:217–228. Published 2015 May 7. doi:10.2147/JPR.S83076
(16) Altman RD, Dasa V, Takeuchi J. Review of the Mechanism of Action for Supartz FX in Knee Osteoarthritis. Cartilage. 2018;9(1):11–20. doi:10.1177/1947603516684588
(17) Xing D, Wang B, Zhang W, Yang Z, Hou Y1,2, Chen Y, Lin J. Intra-articular platelet-rich plasma injections for knee osteoarthritis: An overview of systematic reviews and risk of bias considerations. Int J Rheum Dis. 2017 Nov;20(11):1612-1630. doi: 10.1111/1756-185X.13233.
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1 thought on “Meniscus Tear MRI?-Please Read This

  1. terrence o'neill

    Good info. I had Dr. Centeno oinject my stem cellsion my right knee… whoch has causing me pain and makong me hobble, not able to walk or carry anything, do steps one at a time, etc..
    The procedure worked beautifully, and in weeks I was walking almost normally, and completely normal in a few months. Now a couple of years later I am beginning to have some pain which seems this time to come from the inner front part of the knee, and plan to visit the clinic in a month or so and ask if PRP will help this.

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