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Health condition · Clinically reviewed

Knee meniscal tear, from a twisting injury to a clear plan.

Not every torn meniscus needs an operation - and not every knee that clicks is torn. A modern, guideline-led plan sorts one from the other.

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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against NICE NG226, BASK and peer-reviewed sources you can see at the end.

  • 03

    Current for 2026

    Reflects the post-METEOR shift toward physiotherapy first for degenerative tears, and repair-first surgery for young traumatic tears.

Key facts

Meniscal tears at a glance.

The essentials, in plain English - what it is, the patterns, and how UK knee surgeons think about it in 2026.

  • What it is

    A tear of the medial or lateral meniscus, the two crescent-shaped cartilage cushions that share load and stabilise the knee joint.

  • Two broad patterns

    Traumatic tears in younger knees, usually from a twisting injury on a planted foot, and degenerative tears in knees over 40, often alongside early osteoarthritis.

  • Tear patterns

    Horizontal, oblique, longitudinal, radial, complex, and displaced bucket-handle tears - each has a different repairability and urgency.

  • Locked knee

    A displaced bucket-handle tear can physically block the knee from straightening. This is a specialist commissioned surgical emergency.

  • Investigation of choice

    MRI is the gold standard - a specialist commissioned scan that confirms the tear pattern, location and repairability.

  • Modern treatment

    For degenerative tears, physiotherapy first. For young traumatic tears, meniscal repair wherever the tear will heal - saving the meniscus preserves the knee.

Why this guide matters

The knee has changed its mind about surgery.

The post-METEOR era has quietly rewritten meniscal care. The three points below shape every decision on this page.

  • Degenerative tears - physio first

    Per NICE NG226 and the METEOR trial, degenerative tears in over-40s do as well with structured physiotherapy as with arthroscopy - the knee benefits more from strength than from a scalpel.

  • Traumatic tears - preserve the meniscus

    In younger knees, especially with a repairable tear pattern in the vascular zone, a specialist commissioned meniscal repair protects the joint for decades.

  • Locked knees are urgent

    A displaced bucket-handle tear is a specialist commissioned surgical emergency - not a routine outpatient MRI.

How the diagnosis is made

From the moment it twisted to a settled plan.

The steps a UK GP or knee surgeon will normally follow, in order - so you know what to expect and why.

  1. 01

    Assessing

    History and mechanism

    A twisting injury on a planted foot points to a traumatic tear. A gradual, activity-related ache in an older knee points to a degenerative tear.

  2. 02

    Assessing

    Mechanical symptoms

    Locking, catching, clicking or giving way are typical - and important, because they change how urgently the knee needs to be seen.

  3. 03

    Assessing

    Joint-line examination

    A specialist musculoskeletal exam looks for joint line tenderness, effusion and reduced range of movement.

  4. 04

    Confirming

    Provocation tests

    McMurray, Thessaly and Apley tests reproduce meniscal symptoms - a specialist musculoskeletal assessment interprets them alongside the history.

  5. 05

    Confirming

    MRI scan

    The gold-standard investigation - a specialist commissioned MRI (see our guide to a private MRI scan) confirms the pattern, size and location of the tear.

  6. 06

    Planning

    Specialist MDT review

    A specialist orthopaedic team decides on repair, resection or conservative care - shaped by age, tear pattern, vascular zone and associated ligament injury.

  7. 07

    Planning

    Urgent pathway if locked

    A locked or bucket-handle knee is a specialist commissioned surgical emergency and needs urgent orthopaedic review, not a routine MRI wait.

Typical timeline: first visit to a specialist plan in weeks - faster if the knee is locked.

Symptoms

What a torn meniscus actually feels like.

A recognisable mix of joint-line pain, swelling and mechanical symptoms - and the features that mean it is time to escalate.

  • Joint-line pain

    A sharp, well-localised pain along the inner or outer joint line - the classic meniscal symptom.

  • Swelling

    An effusion that appears hours after the injury, or a low-grade swelling that comes and goes with activity.

  • Clicking and catching

    Mechanical symptoms as a torn flap moves inside the joint - often reproducible with a squat or twist.

  • Locking

    A physical block to full extension - a displaced fragment sitting in the joint. Needs specialist commissioned review.

  • Giving way

    The knee buckles unexpectedly - a sign of pain inhibition, or of an associated ligament injury.

  • Reduced range of movement

    Difficulty fully straightening or bending the knee, often with an end-range block or pinch.

  • Activity-related ache

    In degenerative tears, a deeper ache with kneeling, squatting and stairs - closely overlapping with early osteoarthritis.

  • Red flag - locked knee

    A knee that will not straighten, especially after a twist, is a specialist commissioned surgical emergency until proven otherwise.

Treatment

How meniscal tears are treated in the UK.

Physiotherapy first for degenerative tears, meniscal repair for young traumatic tears, and urgent surgery for a locked knee.

  • Physiotherapy first

    For degenerative tears, targeted physiotherapy is first-line per NICE NG226 - see our guide to spinal physiotherapy and musculoskeletal rehab. Most people improve without surgery.

  • NSAIDs and simple analgesia

    Short courses of anti-inflammatories, alongside activity modification, calm the joint enough for rehab to work.

  • Intra-articular injection

    A steroid or hyaluronic acid injection can quieten an irritable joint - a specialist musculoskeletal option in degenerative tears with early osteoarthritis.

  • Meniscal repair

    In young traumatic tears sitting in the vascular red-red or red-white zone, repair is preferred - a specialist commissioned procedure that preserves the meniscus.

  • Partial meniscectomy

    Trimming the torn portion at knee arthroscopy - reserved for tears that cannot be repaired, keeping resection as small as possible.

  • Meniscal root repair

    Root tears destabilise the joint and behave like a total meniscectomy - a specialist commissioned repair restores load-sharing and protects the cartilage.

  • Urgent surgery for bucket-handle

    A displaced bucket-handle tear needs urgent reduction and repair - a specialist commissioned emergency, ideally within days.

  • Meniscal transplant (allograft)

    For a small, carefully selected group with prior meniscectomy and pain, a meniscal transplant using donor tissue - a specialist commissioned option.

What this guide is based on

The sources behind every claim on this page.

UK national guidance, knee-surgery society standards and the landmark trial data that shaped modern practice.

Key references

Guidelines and trials we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP or knee surgeon knows your knee and history and can tell you which parts apply to you. If in doubt, get seen.

  • NICE. Osteoarthritis in over 16s: diagnosis and management (NG226).

  • British Association for Surgery of the Knee (BASK). Meniscal tear guidance.

  • ESSKA. Consensus on the management of degenerative and traumatic meniscal lesions.

  • The METEOR trial (Katz JN et al., NEJM 2013) and later follow-up on surgery vs physiotherapy for degenerative tears.

Red flags

When a meniscal tear needs urgent attention.

Most meniscal tears settle with a good plan. These are the situations that will not - and where a specialist opinion cannot wait.

  • Locked knee

    A knee that will not fully straighten after a twisting injury - a displaced bucket-handle tear until proven otherwise. Needs specialist commissioned emergency review.

  • Suspected bucket-handle tear

    Sudden mechanical block, a large effusion and pain with attempted extension - do not wait for a routine MRI slot.

  • Meniscal root tear

    Older adults with a sudden pop, medial pain and a rapidly developing effusion - a specialist commissioned repair preserves the joint.

  • Associated ACL injury

    A twisting injury with an audible pop and immediate swelling suggests combined ligament and meniscal injury - see our guide to knee ligament injury.

  • True joint instability

    The knee giving way on flat ground, not just with sport, needs urgent specialist musculoskeletal assessment.

  • Hot, red, swollen knee

    A joint infection can mimic a meniscal flare - fever, systemic upset or an acutely inflamed knee needs same-day medical review.

  • Progressive quadriceps wasting

    Rapid thigh wasting after a knee injury is a signal that rehabilitation is falling behind and the knee needs review.

  • Failed conservative care

    Persistent mechanical symptoms after 3 months of good rehabilitation deserve a specialist orthopaedic opinion - not another round of the same programme.

  • Deep vein thrombosis features

    Calf swelling, warmth or disproportionate pain after knee injury or surgery needs urgent assessment - not to be dismissed as a meniscal flare.

Living with it

A treatable injury, with a clear ladder.

Four things that make the biggest difference - patience with rehabilitation, sensible load, watching for warnings, and preserving the meniscus where you can.

A quiet reminder

A strong knee is a forgiving knee.

Whether or not you have surgery, the quality of your rehab is the single biggest predictor of how the knee feels a year from now.

  1. 01 Rehab

    Trust the physiotherapy

    For most degenerative tears, a structured 12-week programme is as effective as surgery - and safer. Give it real time before escalating.

  2. 02 Load

    Manage load, not just pain

    Modify twisting and deep squatting for a period, but keep moving - a knee that stays strong recovers faster.

  3. 03 Watch

    Know the mechanical warnings

    True locking, giving way on flat ground or a new large effusion are reasons to escalate, not push through.

  4. 04 Preserve

    Save the meniscus if you can

    If surgery is offered, ask whether repair is possible. Preserving meniscal tissue protects the knee decades down the line.

Frequently asked

Everything we get asked about meniscal tears.

Quick answers on tear patterns, MRI, physiotherapy, repair and when surgery cannot wait.

  • What is a meniscal tear?

    A meniscal tear is an injury to one of the two crescent-shaped cartilage cushions in the knee - the medial or lateral meniscus. They act as shock absorbers, share load across the joint and add stability. Tears range from small, degenerative fraying in older knees to displaced bucket-handle tears in young twisting injuries.

  • What are the different tear patterns?

    Meniscal tears are classified by their shape and location. Horizontal, oblique, longitudinal, radial and complex tears each behave differently. A displaced longitudinal tear is called a bucket-handle tear and can lock the knee - a specialist commissioned surgical emergency. Meniscal root tears, where the meniscus detaches from bone, disrupt load-sharing and need specialist commissioned repair.

  • Do I need surgery for a meniscal tear?

    Not usually. For degenerative tears in adults over 40, NICE NG226 and the METEOR trial support physiotherapy as first-line care - most people do as well without surgery. For young traumatic tears, particularly with locking or a bucket-handle pattern, a specialist commissioned meniscal repair is often preferred to preserve the meniscus and protect the knee long term.

  • What does a meniscal repair involve?

    A specialist commissioned arthroscopic procedure through small incisions - the surgeon stitches the tear back together, most successful when the tear sits in the vascular red-red or red-white zone. Recovery involves a period of restricted weight-bearing and a structured rehabilitation programme, usually four to six months back to sport.

  • When is a meniscectomy still the right operation?

    When a tear cannot be repaired - typically in the avascular white-white zone, or with a complex degenerative pattern in an otherwise irritable knee. A specialist orthopaedic surgeon will remove only the torn portion at knee arthroscopy, keeping as much meniscus as possible. Preserving meniscal tissue matters because meniscectomy is linked to earlier osteoarthritis.

  • Is a meniscal transplant an option?

    For a carefully selected group - usually younger patients with pain after a previous meniscectomy and a knee that is otherwise well aligned and stable - a meniscal transplant using donor tissue is a specialist commissioned option. It is not a routine procedure, but for the right person it can meaningfully reduce pain and protect the joint.

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