Meniscus Tears: Surgery Isn't Always the Answer

Few sentences land as heavily as being told you have torn your meniscus. It sounds structural and final, the sort of thing that surely needs fixing, and most people arrive at their first appointment already picturing a keyhole operation and a set of crutches.

That picture is often wrong. Over the last decade or so, the evidence around meniscal tears has shifted substantially, and meniscus tear physio has gone from being the thing you do after surgery to being, for a large group of people, the thing you do instead of it. Here is what is actually going on inside the knee, and how to think about your options.

What the meniscus is and what it does

Each knee has two menisci: C-shaped wedges of tough fibrocartilage sitting between the thigh bone and the shin bone, one on the inner side and one on the outer. They spread load across the joint surface, absorb shock, help the knee track properly and contribute to stability.

One detail matters enormously for prognosis. The outer third has a blood supply. The inner two-thirds has very little. A tear at the periphery can genuinely heal; a tear in the central portion largely cannot, which is why the conversation about central tears is about managing symptoms and building capacity rather than about repair.

Two very different injuries with the same name

This is where most of the confusion comes from, because a scan report says "meniscal tear" for both.

Traumatic tears happen to a healthy meniscus during a specific event, usually a twist on a planted foot. Football, rugby, netball, skiing, a bad step off a kerb. These are more common in younger, active people and sometimes come alongside a ligament injury.

Degenerative tears happen gradually as the tissue changes with age. There is often no incident at all, or a trivial one such as standing up from a low sofa. These are extremely common from the forties onwards, and are best understood as part of the same process as early wear in the joint, rather than as an acute injury.

Here is the part people find genuinely surprising: meniscal tears show up on the scans of large numbers of people who have no knee pain whatsoever. Finding a tear on an MRI does not automatically mean the tear is causing your symptoms. It is a normal finding in a middle-aged knee in much the same way that grey hair is a normal finding on a middle-aged head.

What it feels like

Typical symptoms include pain along the joint line on the inner or outer side, swelling that builds over hours rather than instantly, a catching or clicking sensation, difficulty with deep squatting or kneeling, discomfort turning in bed, and the knee occasionally feeling as though it might give way.

True locking is different and important. That means the knee physically cannot straighten fully because something is caught inside the joint. If your knee will not straighten, that needs an orthopaedic opinion promptly.

What the evidence actually says about surgery

For degenerative tears, this is one of the clearest bodies of evidence in musculoskeletal medicine. Multiple large randomised trials have compared keyhole surgery to trim the torn tissue against a structured exercise programme, and they have consistently failed to show a meaningful advantage for surgery at twelve months. Some trials have compared surgery to a placebo operation with the same result.

NICE guidance now reflects this, advising against arthroscopic procedures for degenerative knee disease in most circumstances. That does not mean surgeons are doing anything wrong; it means the profession as a whole updated its position when the data came in, which is exactly what should happen.

For traumatic tears in younger people, the picture is more nuanced. Some peripheral tears are repairable, and repairing a meniscus is very different from removing part of it. Removing meniscal tissue reduces the knee's shock absorption permanently, which is worth weighing carefully in a twenty-five-year-old.

What a proper assessment involves

When I assess a suspected meniscal problem across Liverpool and Merseyside, the history does most of the work. Was there a twisting incident? How quickly did it swell? Does it catch, and does it truly block?

Then the examination: joint line tenderness, whether full extension is available, the size of any effusion, quadriceps bulk and control, hamstring and glute strength, and how you manage a single-leg squat, a step-down and a controlled twist. The classic meniscal tests are useful but far from perfect on their own, so I use them as part of a picture rather than as a verdict.

Just as importantly, I am ruling other things in or out. Patellofemoral pain, referred pain from the hip, a ligament injury and early osteoarthritis can all masquerade as a meniscal tear.

What meniscus tear physio looks like in practice

The programme has a fairly predictable shape.

Early phase. Settle the irritability. Relative rest rather than complete rest, because a knee that stops moving stiffens and the quadriceps waste quickly. Restore full straightening as a priority, keep the quads switched on with static contractions and inner-range work, and get comfortable walking normally.

Building phase. This is the real treatment and it is unashamedly strength work. Leg press or sit-to-stand progressions, step-ups, split squats through a range you tolerate, hamstring and calf loading, and hip strength, because a knee that collapses inwards is usually being let down from above.

Return phase. Gradual reintroduction of the things that provoked it: deeper squatting, kneeling, hopping, change of direction. For anyone going back to five-a-side or a Sunday league pitch, this stage is not optional. If you want more on that side of things, my approach to sports injury rehabilitation covers it in more detail.

Expect roughly three months for a degenerative tear to settle meaningfully. Progress is rarely linear and a flare after a busy weekend does not mean you have undone anything.

What you can do this week

Keep walking. Reduce the aggravating movements rather than eliminating all movement. Start straight-leg raises and sit-to-stands daily. Ice for twenty minutes if the knee is swollen and hot after activity. Stop on sharp pain; work through mild discomfort that settles within a day.

When to seek help urgently

See a doctor or attend A&E if your knee locks and will not straighten, if you cannot weight bear at all after an injury, if the knee became hot, red and very swollen with fever or feeling unwell, or if there was significant trauma with obvious deformity. Sudden severe swelling within an hour of a twisting injury also warrants prompt assessment, as it can indicate a ligament tear or fracture.

Otherwise, book an assessment if the pain has not improved after a few weeks, or if the knee is limiting what you want to do.

More general information sits on my knee pain page, and you can read about how I work through musculoskeletal physiotherapy across Liverpool.

If you have a scan report in your hand and no clear plan, that is exactly the situation worth an hour of proper assessment. Book at /portal/book or call me on +44 7553 370300. Home visits across Liverpool and Merseyside are £90 a session, online consultations £60, evenings Monday to Friday, plus Saturday and Sunday daytimes, and no GP referral is needed.