Meniscus tear
Also called: torn cartilage, knee cartilage tear. Clinical name: Meniscal tear.
A meniscus tear is torn knee cartilage, often from a twist. Small or outer-edge tears can settle over weeks to months with rest and rehab; larger tears that lock the knee may need a clinician's assessment for surgery.
What it actually is
A meniscus tear is damage to one of the two pieces of cartilage that cushion your knee. Each meniscus is a tough, C-shaped pad of rubbery cartilage that sits between your thigh bone and shin bone, spreading load across the joint and helping it glide smoothly. When people say they’ve “torn the cartilage” in their knee, this is almost always what they mean.
Tears happen in two broad ways. One is a sudden twist under load — planting the foot and turning, or awkwardly changing direction — which is why it’s common in sport but can equally come from something as ordinary as twisting while standing up. The other is gradual: as cartilage wears with age it becomes more brittle, and a degenerative tear can appear with little or no obvious injury. The two often behave quite differently in how they’re managed.
The typical story is a twist followed by pain along the joint line — the crease on the inner or outer side of the knee — often with swelling that builds over the following hours, and sometimes a catching, clicking or locking feeling when you move. Not every tear causes drama; some are quietly present for a long time. What it actually is, and which type of tear you have, is something a clinician works out by examining the knee and sometimes scanning it — not something to diagnose from symptoms alone.
How bad is it?
Meniscus tears aren't cleanly graded 1–2–3 for patients the way a muscle strain is — what matters far more is the type of tear and where it sits. Broadly: small or degenerative tears (often from gradual wear rather than one injury) are frequently managed without surgery, with rest, rehab and time. Larger acute tears — especially ones that lock or catch the knee — are the ones a clinician may assess for surgery. The other key point is blood supply: the outer third of the meniscus has a rich blood supply and a tear there may heal on its own or be repaired, while the inner two-thirds has little to no blood supply and tears there largely cannot heal (AAOS).
How long will it take?
Recovery moves in phases. This is the typical shape of it — yours may run faster or slower, and the numbers below are general ranges, not a forecast for your specific injury.
When to get it looked at
Most cases settle with time and sensible loading. Get it assessed by a professional if any of these apply — they can point to something that needs hands-on care:
- Your knee locks or won't fully straighten (a piece of torn cartilage may be caught in the joint)
- The knee gives way or buckles under you
- Marked or rapid swelling, especially soon after the injury
- You can't put weight through the leg or walk on it
- You heard a crack at the moment of injury, or the knee has changed shape (seek urgent assessment)
- Severe pain that isn't settling with rest and ice over a few days
This is a list of warning signs, not a diagnosis. If you are worried, or the pain is severe, see a GP, physiotherapist or urgent care.
What to track while you recover
A meniscus tear is confusing to read day to day — some mornings the knee feels almost normal, others it catches or swells after nothing obvious. A simple daily record turns that noise into a pattern, and it's exactly what a clinician asks about when deciding between rehab and referral.
- Whether the knee locked, caught or gave way that day — and what you were doing when it happened
- Swelling: none, mild or obvious, and whether it followed activity
- Pain on the joint line, 0–10, and where exactly it sits
- How far you could bend and fully straighten the knee
- What clearly aggravated it — twisting, squatting, stairs, kneeling — and what helped
This is exactly what InjuryLog does.
Log each of these in seconds, watch the trend build day by day, and keep every scan and receipt tied to this one injury. Free to start.
What to tell your physio
The first appointment moves faster when you can describe the pattern instead of just today's knee. Bring the history, the mechanism, and what makes it lock or swell.
- How it started — a specific twist or awkward movement, or a gradual ache with no clear injury
- Whether it locks, catches or gives way, and how often
- The swelling pattern: how soon after the injury, and whether it comes back with activity
- What movements reliably provoke it — deep squats, pivoting, stairs, kneeling
- Whether it's improving, static or worsening since it started, and any previous knee injuries
Walk in with the whole picture.
InjuryLog turns your daily logs into a clean Physio Visit Pack, a one-page summary your physio can actually read, so the first appointment starts with facts, not guesswork.
The questions people actually ask
What is the meniscus in the knee?
The meniscus is a piece of tough, rubbery, C-shaped cartilage that sits between your thigh bone and shin bone. You have two in each knee, and they act as cushions or shock absorbers, spreading load and helping the joint move smoothly. When people talk about "torn cartilage" in the knee, this is usually what they mean. A tear is damage to that cushion, either from a sudden twist or from gradual wear.
Does a torn meniscus heal on its own?
It depends heavily on where the tear is. The outer third of the meniscus has a good blood supply, so a tear there may heal on its own or be repairable; the inner two-thirds has little blood supply and tears there largely cannot heal by themselves (AAOS). The NHS notes a meniscus tear can get better without treatment, but it can take a while. A clinician assessing the knee is the only way to tell which kind of tear you're dealing with.
How long does a meniscus tear take to heal?
There's no single figure, because it depends on the tear and the treatment. Smaller or degenerative tears managed with rest and rehab are usually a matter of weeks to a few months. If surgery is involved, the timelines split sharply: trimming the torn part (partial meniscectomy) is roughly a 3–6 week recovery, while stitching a tear (repair) is protected for longer, around 3–6 months, so the tissue can knit (AAOS).
Do I need surgery for a meniscus tear?
Not necessarily — many tears are managed without an operation. The AAOS notes that if symptoms settle and there's no locking or swelling, a clinician may recommend non-surgical treatment. Surgery is more often considered for larger tears, ones that lock or catch the knee, or those that don't respond to rehab. This is a decision to make with a clinician who has examined and often imaged the knee, not something to judge from symptoms alone.
What is a grade 2 meniscus tear?
Grading of meniscus tears comes from what's seen on an MRI scan, and it describes signal changes within the cartilage rather than a neat patient-facing 1–2–3 scale. A grade 2 signal generally reflects change inside the meniscus that hasn't clearly reached the surface, and it doesn't always mean a full tear needing surgery. What matters clinically is your actual symptoms and examination, so the grade is best interpreted by the clinician who ordered the scan.
Why does meniscus tear pain come and go?
Because it's movement- and load-sensitive. The pain tends to spike with the positions that stress the torn area — twisting, deep squatting, stairs, kneeling — and quieten when you avoid them. A flap of torn cartilage can also catch intermittently, so the knee feels fine until a certain movement provokes it. That on-off pattern is common and doesn't tell you much on its own; tracking what precedes each flare is more useful than any single bad day.
What exercises help a meniscus tear?
For many tears, especially smaller or degenerative ones, building strength around the knee is a core part of recovery — quadriceps, hamstrings and glutes all help support and offload the joint. The NHS notes physiotherapy may be recommended to reduce pain and improve movement. That said, the right exercises depend on your specific tear, and pushing into sharp pain or forcing a locking knee can set you back, so a physio-guided plan is safer than a generic routine.
How do I know if my meniscus tear is healing?
The encouraging signs are gradual: less swelling after activity, the knee locking or catching less often, more comfortable bending and straightening, and being able to do more before it complains. Day to day it will still fluctuate, so judge it by the trend over a couple of weeks rather than a single morning. If it's static or worsening despite rest and rehab — or it keeps locking — that's the point to have a clinician reassess.
When can I drive after meniscus surgery?
There's no fixed date, and it depends on the type of surgery, which knee, and how well you can control the car safely — including an emergency stop. It's often sooner after a simple trim than after a repair, which is protected for longer. Recovery varies a lot between people, so this is a question for your surgeon or physio, and it's worth checking your insurer's position before you drive.
Sources
- Meniscus tear — NHS
- Meniscus Tears — AAOS OrthoInfo