The Knee Operation That’s WORSE Than Fake Surgery

Your knee starts hurting.

Maybe it clicks when you stand up. Maybe it catches when you walk.

An MRI reveals a torn meniscus—the small piece of cartilage that helps cushion your knee.

The surgeon says he can “clean it up.” Just a quick procedure. A little trimming.

Back on your feet in no time.

But what if I told you one of the most common knee surgeries performed in older adults just failed one of the longest and most rigorous tests ever conducted?

And the patients who got the surgery actually ended up worse off than those who didn’t.

For decades, surgeons have performed a procedure called arthroscopic partial meniscectomy.

In plain English, they insert tiny instruments into the knee and trim away the damaged portion of the meniscus.

The logic sounds reasonable.

If the cartilage is torn, remove the torn piece. Problem solved.

Except that’s not what happened.

A remarkable Finnish study followed 146 adults ages 35 to 65 with degenerative meniscal tears.

Every participant underwent arthroscopy.

But only half received the actual meniscus-trimming surgery.

The other half received a sham procedure—the surgeon went through the motions but left the meniscus untouched. (Crazy, I know.)

The patients didn’t know which group they were in.

Researchers then followed them for five years. And later for ten years.

After both five and ten years:

• No meaningful difference in knee pain
• No meaningful difference in physical function
• No meaningful difference in quality of life

In other words, patients who had the surgery did no better than those who never had the damaged cartilage removed.

But the surprises didn’t stop there.

The surgery group showed more progression of knee osteoarthritis over time.

They were also more likely to need additional knee procedures later on.

Some eventually progressed to major interventions such as knee replacement.

So they were actually worse off for having had the surgery, as compared to the folks who didn’t.

That’s especially concerning because the meniscus is already one of the body’s most difficult structures to heal.

Unlike many tissues, cartilage has very little blood supply.

Once it’s damaged, repair is challenging. Removing part of it may relieve symptoms temporarily in some patients—but it also reduces the knee’s natural shock absorber.

And that can accelerate wear and tear on the joint.

Yet despite years of evidence, hundreds of thousands of these procedures continue to be performed worldwide.

Why? Money, of course. But also, old habits die hard. And surgery often feels like action.

Patients want relief. Doctors want solutions.

But sometimes the best treatment isn’t more intervention.

It’s targeted physical therapy, strength training, weight management, and giving the body an opportunity to adapt naturally.

If you’re told you need surgery for a degenerative meniscus tear, don’t assume the decision is automatic.

Ask:

• What happens if I try physical therapy first?
• Is this tear causing true mechanical locking, or simply age-related wear?
• What does the evidence say about long-term outcomes?

A second opinion could save you from a procedure that, according to ten years of follow-up data, may not improve your pain, function, or quality of life—and could potentially increase your odds of arthritis down the road.

Sometimes the most important question in medicine isn’t “What can we do?”

It’s “Do we need to do anything at all?”

To asking questions,

Ray Thatcher
Research Director, Health Sciences Institute

Sources:

Christensen, L. (2026, June 11). Surgery for a torn meniscus appears to offer no benefit. Harvard Health Publishing. https://www.health.harvard.edu/bones-and-joints/surgery-for-a-torn-meniscus-appears-to-offer-no-benefit