Treatment decision6 min read
Is meniscus surgery necessary? What the decision rests on
The surgical decision in a meniscus tear rests not on the size of the tear on MRI but on the type of tear, the person's age and the response of symptoms to physiotherapy. Those criteria are set out below.
When surgery comes to the fore
A mechanically locked knee that cannot fully straighten is the clearest indication for surgery. Here the torn fragment is caught in the joint and is not expected to reduce with exercise.
Traumatic tears in young, active people are suitable candidates for repair, especially in the vascular outer zone. Repair preserves meniscal tissue and is therefore valuable for long-term joint health.
Repeated giving-way and persistent joint effusion are also grounds for surgical assessment. These findings indicate the joint is being mechanically disturbed.
When physiotherapy takes priority
In degenerative tears over the age of forty, physiotherapy is the first option. Numerous studies show surgery offers no clear advantage over an exercise programme in this group.
Cases without locking, with preserved range and pain as the main complaint also belong here. A significant proportion of these patients return to daily and sporting activity without surgery.
Where cartilage wear is also present, the contribution of surgery is further limited. Removing meniscal tissue can increase joint load, so the conservative approach is preferred.
How the decision should be made
Where there is no locking, a trial of a structured eight-to-twelve-week physiotherapy programme is a reasonable start. At its end, the decision rests on a measured outcome rather than a prediction.
If locking persists, pain limits daily life, or no meaningful strength progress is achieved despite the programme, surgical assessment becomes appropriate.
Rehabilitation is essential even when surgery is chosen. Surgery resolves the mechanical problem; strength, balance and gait are regained only through a programme.
Key points
- Mechanical locking is the clearest indication for surgery.
- In young, traumatic tears, repair preserves meniscal tissue.
- In degenerative tears over forty, physiotherapy is the first option.
- With cartilage wear present, surgery's contribution is further limited.
- Rehabilitation is essential even when surgery is chosen.
Frequently asked questions
Does delaying surgery cause harm?
Without locking, a few months' trial of physiotherapy is not harmful to the joint. In a locked knee, waiting can damage the cartilage surface, so early assessment is appropriate.
What happens if the meniscus is removed?
The more tissue removed, the greater the load on the joint surface and the higher the long-term risk of arthritis. Where possible, repair is therefore preferred over removal.
How long is recovery after surgery?
Where the torn fragment is removed, return to daily life takes a few weeks. Where a repair is performed, healing of the tissue is awaited and the process extends to three to six months.
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This content is for information only and does not replace medical diagnosis or treatment. Response to treatment varies between individuals. Please consult a healthcare professional about your symptoms.