PRP and Orthobiologics in Des Peres, MO

I-270 NORTH

A meniscus tear on an MRI is not automatically the reason your knee hurts, and operating on one is not automatically the answer.

Getting here from Des Peres

I-270 north to Natural Bridge Road — a straight nineteen-minute run. Parking outside the door, ground-floor entrance.

The most over-attributed finding in the knee

Degenerative meniscal tears are extremely common in middle-aged and older knees, including in people with no pain at all. Finding one on a scan therefore establishes very little on its own.

That is not a fringe position. Multiple randomised trials of arthroscopic partial meniscectomy for degenerative tears have found no meaningful advantage over structured exercise, which is why the operation is performed far less than it once was.

Meniscus tear covers which tears behave differently — a genuine mechanical block, a locked knee, or an acute traumatic tear in a younger patient are separate situations.

Mechanical symptoms are the discriminator

The question that matters is not whether a tear is present but whether the knee is doing something mechanical: truly locking, giving way, or blocking short of full extension.

Pain and swelling alone, in a knee with degenerative change, usually reflect the arthritis rather than the tear. Treating the tear in that situation removes tissue and leaves the actual problem.

When the scan is normal and it still hurts

The opposite presentation is just as common and considerably more demoralizing. A normal scan with real pain covers what to look at when imaging is unhelpful.

Imaging shows structure. It does not show how a joint behaves under load, and it does not show sensitization.

The knee that gives way

True giving way — the knee buckling without warning — is different from the knee feeling unreliable, and the distinction matters. The first suggests a mechanical or ligamentous problem; the second usually reflects quadriceps inhibition from pain.

The second is far more common and it responds to strength work rather than to surgery.

Swelling as a signal

A knee that swells after activity is telling you the load exceeded what the joint currently tolerates. It is the most useful feedback available and it is usually ignored.

We use it to calibrate the program rather than treating it as a symptom to suppress.

Locking that is not locking

Many people describe a knee as locking when it is catching or hesitating. True locking is an inability to fully straighten it, and the distinction changes the management entirely.

It is worth being precise about, because that single word drives surgical decisions.

What we offer instead

Where the diagnosis is degenerative change with a coincidental tear, the plan is loading, offloading and where appropriate an intra-articular orthobiologic aimed at the joint environment rather than at the tear.

The preparation for a joint is deliberately leukocyte-poor — the distinction — because a leukocyte-rich preparation inside a joint tends to produce a painful flare without benefit.

What to bring

The imaging itself rather than the report, and a clear account of what the knee actually does — not just where it hurts but what movement produces it and whether it ever genuinely locks.

That history does more diagnostic work than the scan in this presentation, and it is the part most often skipped.

The evidence, stated plainly

The strongest evidence in this area is what does not work — arthroscopy for degenerative tears. Why the trials disagree.

The ceiling nobody measures

A joint that keeps swelling is frequently responding to more than mechanics, and the systemic picture is worth measuring before it is dismissed. The metabolic side.

The degenerative tear and the arthritic knee are usually one problem

This is the single most useful reframe for a knee that has a meniscal tear on the report and no clear injury behind it. In a knee with established cartilage loss, a horizontal or complex degenerative tear is generally part of the same degenerative process rather than a separate event layered on top of it.

That matters because the two are treated differently. A traumatic tear in an otherwise healthy knee, particularly one causing genuine mechanical locking, is a surgical conversation. A degenerative tear in an arthritic knee is not, and the trials of arthroscopic partial meniscectomy in that population are among the clearest negative results in orthopedics — repeatedly no better than placebo surgery or structured exercise at one year and beyond.

The tear is real, the pain is real, and the operation still does not help. Those three statements sit together uncomfortably, which is why the finding gets resisted, but they have held up across multiple independent trials.

What follows from it is that the knee is treated as an arthritic knee: quadriceps and hip strength, load management, weight where it is relevant, and the injection options assessed on what they can realistically do for that joint. Removing the torn fragment does not address why the joint hurts.

What Des Peres patients ask

My MRI shows a meniscus tear. Do I need surgery?

Usually not, if the symptoms are pain and swelling rather than true mechanical locking: which tears matter.

What counts as a mechanical symptom?

Genuine locking, giving way, or an inability to straighten the knee fully — not pain or stiffness alone.

Can PRP repair a meniscus?

It does not knit a degenerative tear. Where it helps, it is acting on the joint environment: what that means.

How far is it from Des Peres?

About nineteen minutes straight up I-270.