Pain along one side of the knee, most often the inner side, at the joint line.
Catching, clicking or a sense of something moving inside the joint.
Locking — the knee sticks and will not fully straighten until you wiggle it free.
Swelling that comes on over a day or two, rather than within hours.
Pain on squatting, twisting, or getting out of a car.
Difficulty with stairs, particularly going down.
Giving way, which happens because the knee pain briefly switches the thigh muscle off.
Why it happens
A twisting injury with the foot planted — the classic sports mechanism.
Deep squatting or standing up from a squat, which is a very common cause in India.
Kneeling and twisting at work.
Gradual degeneration, where the meniscus becomes brittle with age and tears with a minor movement or none at all.
Alongside an ACL tear, in which case both are usually injured in the same moment.
Repeated giving-way episodes in a knee whose ACL is already torn.
See someone sooner if…
Your knee is locked and will not straighten. A displaced tear blocking the joint should be seen promptly rather than left for months.
The knee gave way and swelled within a few hours, which suggests a ligament injury as well.
You cannot bear weight on the leg.
The knee is hot, red and you feel unwell — this needs urgent assessment for infection today.
Pain and swelling are not improving after six weeks of sensible self-care.
What the meniscus is and why it matters
Each knee has two menisci — tough, rubbery, C-shaped wedges that sit between the thigh bone and the shin bone, one on each side. They are the reason your knee tolerates decades of load. They spread your body weight across a wide area of cartilage, absorb shock, help the joint stay stable, and distribute the fluid that lubricates it.
Take a meniscus out, and the same body weight is concentrated onto a much smaller patch of joint surface. That is why people who had their whole meniscus removed in the 1970s and 80s so often developed early arthritis, and why modern surgery works hard to keep as much of it as possible.
Two very different kinds of tear
Aspect
Traumatic tear
Degenerate tear
Typical age
Teens to forties
Over forty-five
How it started
A specific twisting injury
Gradually, or with a trivial movement
Tear pattern
Clean, often vertical or radial
Frayed, horizontal, complex
Repairable
Often, if in the outer third
Rarely
Accompanying arthritis
Usually none
Frequently present
First treatment
Assessment for repair, especially if young
Physiotherapy — most settle without surgery
Surgery helps most when
The tear blocks the joint or is repairable
There is genuine mechanical locking, not just pain
The same words — 'meniscus tear' — describe two conditions with different treatments.
This distinction is why the advice you find online is so contradictory. Studies showing that meniscus surgery does not help were largely done in older patients with degenerate tears and arthritis — and for that group the conclusion is right. It does not follow that a 24-year-old with a repairable tear should be left alone.
Can it get better without surgery?
Often, yes — and this surprises people. A degenerate tear frequently stops causing symptoms even though the tear itself remains exactly as it was on the scan. The pain settles, the swelling goes, and the knee gets on with life. Physiotherapy is genuinely worth three months of your effort before considering an operation.
What does not settle is a tear that is physically blocking the joint. If a fragment has flipped into the middle of the knee and you cannot straighten it, no amount of strengthening will move it back. That is the situation where waiting causes harm rather than avoiding it.
How it is diagnosed
Your history: how it started, whether it locks, and what movements reproduce the pain.
Examination, including specific rotation tests and pressing along the joint line — tenderness exactly at the joint line is a useful sign.
X-ray, which does not show the meniscus but shows whether arthritis is present. This matters enormously to the plan.
MRI, which shows the tear, its pattern, its position and the state of the surrounding cartilage.
One caution about MRI: meniscal changes are found on scans of a great many people over forty who have no symptoms at all. A tear on a report is not automatically the cause of your pain, and treating the scan rather than the patient is a common way to end up with an unnecessary operation.
First, without surgery
What to try before an operation
This list comes first on purpose. For most people reading this page, it is the whole treatment — and where it is not, having genuinely worked through it makes the decision to operate a much clearer one.
A progressive strengthening programme for the quadriceps, hamstrings and hips — the best-evidenced treatment for degenerate tears.
Relative rest from the specific movements that aggravate it: deep squatting, twisting, kneeling.
Ice and a short course of anti-inflammatory medication for a flare.
Weight management, which reduces the load passing through the torn area with every step.
A corticosteroid injection where swelling and pain are limiting your ability to do the exercises.
Modifying how you get to floor level — using a low stool rather than a deep squat can transform daily comfort.
Reassessment at three months, so a plan that is not working is changed rather than continued.
If surgery is needed
And when it genuinely is
Each option below says when it applies, not just what it is. If your situation does not match, that is a good reason to ask more questions.
“My MRI said meniscus tear and I had been told to book the operation. I came for a second opinion mostly to confirm it. Instead I was told my knee did not lock, that the tear was degenerate, and that twelve weeks of proper strengthening would probably settle it. It did. I appreciated being told the truth rather than being sold a procedure.”
Kalpesh T., 52 · Bank manager
Piplod · 18 months after treatment
Outcome. No surgery. A twelve-week supervised strengthening programme and load modification. Pain resolved, walking and stairs normal, reviewed and discharged.
Representative journey
Chose the longer recovery to keep her meniscus
“I was given a genuine choice: trim it and be back on court in six weeks, or stitch it and wait five months. It was explained that keeping the meniscus would protect my knee for the next forty years. At nineteen, that was not a difficult decision once someone actually laid it out.”
Aditi V., 19 · Badminton player, student
Surat · 10 months after treatment
Outcome. Arthroscopic meniscus repair rather than trimming. Six weeks in a brace on partial weight, full movement by three months, back to competitive badminton at five months with the meniscus preserved.
A consultation means your imaging on the screen, a plain explanation of what is actually wrong, and an honest opinion on whether you need surgery — including when the answer is no.