A new 10-year study found that the most common knee surgery for worn cartilage often leaves patients worse off — and it backs up what Intecore has been telling South Orange County patients for years: try physical therapy first.
A New 10-Year Study Changed How I Talk to Patients About Knee Surgery
I’ve spent close to two decades treating knees — from professionals and high-level athletes to weekend hikers in South Orange County who just want to get back on the trail without their knee barking at them. So when a study like this comes out, I read it closely, because it changes what I tell patients sitting across from me.
Researchers in Finland just published 10-year results on arthroscopic surgery for degenerative meniscus tears — the kind of “torn cartilage” surgery that’s one of the most common orthopedic procedures in the world.1 Half the patients got the actual surgery. The other half got sham surgery — a skin incision, nothing repaired. A decade later, the surgery group had more pain, faster-progressing arthritis, and a higher rate of ending up in a second surgery, usually a total knee replacement.
One of the study’s authors, Teppo Järvinen, called this a case of “medical reversal” — a widely used treatment turning out to be ineffective, or even harmful.2 I’ll say it plainer: the patients who had a real surgeon cut into their knee did worse, over 10 years, than the patients who just got stitched up and sent home. That’s not a small finding. That’s a procedure failing its own test.
This isn’t new information landing out of nowhere, either. This same research group ran a version of this trial back in 2013 and found the surgery didn’t beat sham surgery at two years.3 I’ve been steering patients away from unnecessary arthroscopy since well before this new data came out — this study just gives me a stronger hand to do it with.
This Doesn’t Apply to Every Knee — And That Distinction Matters
I want to be precise here, because headlines flatten nuance and I don’t want a patient reading this and canceling a surgery they actually need.
This study is about degenerative meniscus tears — the kind that show up on an MRI in a knee that’s simply aged, not one that got hurt in a specific incident. It’s not about an ACL tear from a bad landing, or a clean meniscus tear from a twisting injury on the court. Those are different problems and sometimes surgery is exactly right for them.
Here’s what I tell patients: tears like the ones in this study are common in people over 50, and plenty of those knees don’t hurt at all. I’ve reviewed MRIs where the tear looks dramatic on paper and the patient has zero symptoms. The tear on the scan and the pain in your knee are often two separate stories. Cutting out the tear doesn’t automatically fix the pain, because the tear was frequently never the actual cause.
My Stance: If You Haven’t Done Real PT First, You’re Not Ready to Decide on Surgery
Here’s where I’ll say something most clinics won’t put in writing: if you’re over 40, your MRI shows a degenerative meniscus tear, and nobody has put you through a real, structured course of physical therapy first, you don’t have enough information to consent to surgery yet. Not “you shouldn’t have surgery” — you don’t yet know if you need it.
I see this constantly across our clinics in Foothill Ranch, Aliso Viejo, and San Juan Capistrano. A patient gets an MRI for knee pain, the radiology report flags a meniscus tear, and surgery gets presented as the logical next step — sometimes in the same visit. What usually doesn’t get said out loud: that same tear pattern shows up on knees that don’t hurt, and a real trial of strengthening and movement correction resolves pain for a large share of these patients without a scalpel ever coming out.
Even the surgical societies are catching up to this, slowly. A joint consensus statement from major U.S. and European orthopedic groups now says degenerative meniscus tears can be treated with comparable results either operatively or nonoperatively, including PT, and recommends a trial of PT before surgery.4 But as of this year, the American Academy of Orthopaedic Surgeons and the British Association for Surgery of the Knee still formally endorse the procedure.5 Järvinen’s read on that gap is one I agree with: it’s hard for medicine to let go of an established therapy, even once the evidence turns against it.5
What I Mean by “Real PT” — Because It’s Not Ice Packs and a Handout
When I say try PT first, I don’t mean go through the motions. I mean:
- A one-on-one evaluation that figures out what’s actually driving your pain, not just what the MRI report says
- A specific strengthening and movement plan built around the muscles that stabilize your knee
- Regular reassessment over several weeks so we can tell, with real data, whether you’re improving
- An honest conversation about surgery if PT genuinely isn’t working
If you’ve done that and you’re still stuck, surgery may be the right next move — and plenty of patients do benefit from it. I’m not anti-surgery. I’m against skipping the step that would tell you whether you need it.
If a Surgeon Has Already Told You That You Need This Surgery
Call a physical therapist first. It costs you nothing and takes ten minutes on the phone.
Ask two questions: is this tear from a specific injury or is it degenerative wear and tear, and has anyone actually tried loading and strengthening the knee before booking the OR.
To Get A Second Opinion Before Booking Knee Surgery Talk To Us First
Talk to a PT on the phone first. Call (949) 597-2103, or inquire about cost and availability at one of our three South Orange County locations. And if you want the questions I get asked most often before a patient starts PT, grab our free Top 51 FAQs of Physical Therapy report for free when you click here.
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