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The meniscus is your knee's shock absorber, and every millimetre counts. Repairing it when possible — instead of trimming it — is one of the decisions that most shapes the future of the joint.
The menisci distribute load between the femur and tibia and protect the cartilage with every step. When meniscal tissue is lost, that load concentrates: studies show that after a meniscus injury the risk of developing osteoarthritis multiplies roughly six-fold. That's why the European expert consensus (ESSKA) sets meniscus preservation as the primary goal — and why my first question in front of any tear is not "what do I trim?", but "can it be repaired?".
The first distinction is fundamental. Traumatic tears appear acutely after a specific event — a twist, a tackle, an awkward landing — often in younger people and frequently alongside an ACL rupture. Degenerative tears, on the other hand, come from wear, without a clear injury, and in most cases are not operated on initially: their first-line treatment is conservative. This article is about the former — the ones we consider repairing.
Meniscus healing depends above all on the blood supply of the torn zone and the tear pattern. Repair has the best chances when these conditions are met:
Location isn't everything: the ESSKA consensus notes that even tears in the innermost zone have shown good results in selected patients — so no tear is ruled out without a detailed assessment.
The more peripheral the tear, the better its blood supply and the better the repair heals (87–91% in the outer zone).
When the tissue is too damaged or the tear pattern is not repairable, the right option is a minimal partial meniscectomy: removing only the essential fragment while preserving the whole peripheral rim. What the consensus makes clear is the order of priorities: trimming should not be the first choice in a repairable tear, because its long-term outcome is worse than repair.
| Meniscus repair | Partial meniscectomy | |
|---|---|---|
| The meniscus | Is preserved | Part is lost |
| Recovery | Slower: healing must be protected (sport ~4–6 months) | Fast (weeks) |
| The knee's future | Less osteoarthritis, more activity long-term | Higher osteoarthritis risk |
| Reoperation | Possible if the repair doesn't heal | Less frequent short-term |
Orientative synthesis of the ESSKA consensus (see references). Every case needs individual assessment.
The 2019 ESSKA consensus on traumatic meniscus tears — drawn up by Europe's knee experts — summarises the evidence like this:
And one central recommendation: partial meniscectomy should not be the first-line treatment for repairable tears — repair offers less osteoarthritis, higher activity levels and greater satisfaction in the long term. The consensus itself points out that in everyday practice, fewer menisci are repaired than could be.
Because every fragment lost concentrates load on the cartilage: osteoarthritis risk multiplies by ~6 after a meniscus injury. In repairable tears, trimming should not be the first choice — its long-term outcome is worse than repair.
No: repair works best in recent traumatic tears, vertical or longitudinal, in the peripheral vascular zone and with good-quality tissue; root tears are also repaired. If the tissue is not repairable, only the essential part is removed.
It may need a second arthroscopy, usually to remove the fragment. Even with that risk, repair is worth it in the right tears: it heals in around 87–91% of cases in the peripheral zone and protects the knee long-term.
That's a different condition: it appears without a clear injury and in most cases is not operated on initially — first-line treatment is conservative, with exercise and symptom control. Telling the two apart is key to treating you well.
The sooner a traumatic tear is studied, the better the chances it can be repaired — and your meniscus preserved.
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