Should a Torn Meniscus Be Repaired or Removed?

Overview

Meniscus repair sutures a torn meniscus back together to preserve its shock-absorbing tissue, rather than trimming the torn portion away in a partial meniscectomy. Dr. Raffo, whose practice across Bethesda and Montgomery County includes a regular volume of meniscus surgery, repairs the meniscus whenever the tear pattern and tissue quality make it possible, because the long-term difference in arthritis and knee replacement risk between repair and removal is one of the largest effects in all of orthopedic sports medicine.

Who this is for

• Patients with a repairable tear pattern — typically in the vascularized outer red-red or red-white zones — are candidates for repair, especially when the tear is diagnosed and treated within about 6 months of injury.
• Patients undergoing ACL reconstruction with a concurrent meniscus tear are strong repair candidates, since repairs performed alongside ACL reconstruction heal substantially better than repairs done in isolation.
• Patients with posterior meniscus root tears are candidates for root repair specifically, since the biomechanical consequence of an untreated root tear is essentially the same as removing the entire meniscus.
• Patients with a tear confined to the avascular inner white-white zone, longstanding degenerative tears in an already arthritic knee, or tissue too damaged to hold a suture are generally not repair candidates and are more realistically treated with partial meniscectomy or nonoperative care.
• Age alone is not a firm cutoff. Repair failure in patients 40 and older is 12%, not meaningfully different by age group (relative risk 0.73, P=.22) — tear location and whether the ACL is also reconstructed matter far more than age (Sedgwick et al., OJSM 2024; von Essen et al., KSSTA 2025).

How I approach it

My default is to repair the meniscus whenever the tear pattern and tissue allow it, because the long-term data on the alternative are stark. In a 10-year decision model of posterior medial meniscus root tears, osteoarthritis developed in 53.0% of knees after root repair compared with 99.3% after meniscectomy and 95.1% with nonoperative care; total knee replacement occurred in 33.5% after repair versus 51.5% after meniscectomy (Faucett et al., AJSM 2019). Across meniscus tears generally, not just root tears, a meta-analysis of 20 studies and 31,783 patients found repair meaningfully reduced progression to advanced arthritis and knee replacement compared with resection (odds ratio 0.51) (Migliorini et al., KSSTA 2023). When people ask why I go to the extra length to repair rather than simply trim a torn meniscus, that comparison is the entire answer.

I also don't shy away from repairing tears in the red-white zone that used to be considered marginal. Contrary to older teaching, red-white zone repairs healed clinically in 83% of a series of 1,232 patients (Barber-Westin & Noyes, Arthroscopy 2014). Where I am selective is isolated repairs done without a concurrent ACL reconstruction — those fail at more than twice the rate of repairs done alongside ACL surgery (hazard ratio 2.63), which tells me the biological environment of a reconstructed, stable knee matters as much as my technique does (von Essen et al., KSSTA 2025).

The operation

Meniscus repair is performed arthroscopically, most often using an all-inside technique with specialized suture devices passed through small portals, or an inside-out technique with sutures tied over the back of the knee through a small incision, depending on the tear's location. Root tears are repaired by anchoring the meniscus root back to its native footprint on the tibia, restoring the tension that keeps the meniscus functioning as a load-sharing structure rather than letting it extrude out of the joint. When repair is not feasible because of tear pattern or tissue quality, a partial meniscectomy trims only the torn, unstable fragment, preserving as much of the remaining meniscus as possible. If the tear is found at the time of ACL reconstruction, it is addressed in the same surgical setting.

Ramp Lesions

A ramp lesion is a tear at the back of the medial meniscus, where it attaches to the capsule — a tear pattern that is easy to miss because it sits behind the meniscus, out of the direct line of sight during standard arthroscopy. It is common: pooled data put the prevalence at 21.9% of ACL reconstructions, and it can be found in up to 55% of medial meniscus tears in ACL-injured knees, though a large multicenter registry found a somewhat lower rate of 15.3% across 5,359 patients (Siboni et al., Curr Rev Musculoskelet Med 2023; Lambrey et al., KSSTA 2024). MRI is not reliable for finding these tears, with pooled sensitivity of only 65–71%, which is why Dr. Raffo routinely inspects the posteromedial compartment directly during ACL reconstruction rather than relying on imaging alone (Siboni et al., Curr Rev Musculoskelet Med 2023).

Not every ramp lesion needs to be sutured. In a robotic cadaveric study, only lesions at least 3 centimeters long significantly increased anterior tibial translation and rotation in an ACL-deficient knee, and after simulated ACL reconstruction, ramp lesions of any size tested had no significant effect on knee kinematics (Deichsel et al., AJSM 2024). Randomized and comparative studies of stable ramp lesions treated with abrasion or trephination versus formal suture repair found no meaningful difference in outcomes, and even leaving small stable lesions untreated showed no difference in laxity, functional scores, or complications at a minimum of 3 years, though return to sport took somewhat longer (Siboni et al., Curr Rev Musculoskelet Med 2023). Dr. Raffo looks for ramp lesions in every ACL reconstruction and treats unstable ones, but does not automatically suture every stable lesion he finds.

Risks and honest tradeoffs

• Repair failure is real and worth naming plainly. In the largest available registry series, overall meniscal repair failure was 20.2% at 3 years across 2,264 repairs (von Essen et al., KSSTA 2025).
• Isolated repair without ACL reconstruction fails more often. Repair done without a concurrent ACL reconstruction carries more than twice the failure risk of repair done alongside one (hazard ratio 2.63) (von Essen et al., KSSTA 2025).
• Medial meniscus tears fail more often than lateral. Medial location carries a hazard ratio of 2.57 for failure compared with lateral tears (von Essen et al., KSSTA 2025).
• Failure varies sharply by tear zone. Failure rates were 10.4% in the red-red zone, 21.4% in red-white, and 50% in the white-white zone in one meta-analysis of repairs in patients 40 and older (Sedgwick et al., OJSM 2024).
• Bucket-handle tear repairs have a meaningfully higher failure rate, roughly 33% at a median of 19 months to failure in one series, with medial location again increasing the odds of failure (odds ratio 4.8) (Kalifis et al., KSSTA 2022).
• Age alone is a much smaller risk factor than tear location or concurrent ACL reconstruction. Age over 40 carries a hazard ratio of just 1.22 for failure, far smaller than medial location or isolated repair (von Essen et al., KSSTA 2025).
• Even without meniscus injury, ACL injury alone carries an osteoarthritis risk, and that risk rises substantially with meniscal damage — reported prognosis is 0–13% without meniscus injury versus 21–48% with it (Grindem et al., BJSM 2016).
• ACL reconstruction itself does not prevent osteoarthritis, and meniscal status is a major reason why. Roughly 36% of patients have radiographic osteoarthritis at approximately 10 years after ACL reconstruction, and the odds of OA after reconstruction are not clearly lower than after the injury alone (OR 7.7 vs 6.81) — meniscal preservation is one of the few factors in this picture that surgery can actually influence (Webster & Hewett, Clin J Sport Med 2022).

Recovery and rehabilitation

Recovery after meniscus repair is slower and more protected than after meniscectomy, because the repaired tissue needs time to heal rather than simply recovering from a trimming procedure. Return to play after meniscus surgery broadly ranges from 65% to 100% of patients returning at 4 to 7 months, and reported time off work is longer after repair (about 55 days) than after partial meniscectomy (about 37 days) (AAOS Acute Isolated Meniscal Pathology CPG, 2024).

• Weeks 0–4: Protected weightbearing, often with a brace limiting deep flexion, to protect the healing repair.
• Weeks 4–8: Progressive weightbearing and range of motion as the repair matures.
• Months 3–4: Gradual return to straight-line activity and strengthening.
• Months 4–7: Return to sport for most patients, once strength and functional criteria are met (AAOS Acute Isolated Meniscal Pathology CPG, 2024).
• Note for combined ACL and meniscus repair cases: Rehabilitation follows the more conservative of the two protocols, generally the meniscus repair timeline, to protect the healing meniscal tissue.

1. Weeks 0–4

   Protected weightbearing, often with a brace limiting deep flexion, to protect the healing repair.

2. Weeks 4–8

   Progressive weightbearing and range of motion as the repair matures.

3. Months 3–4

   Gradual return to straight-line activity and strengthening.

4. Months 4–7

   Return to sport for most patients, once strength and functional criteria are met (AAOS Acute Isolated Meniscal Pathology CPG, 2024).

Alternatives I considered

For tears confined to the avascular white-white zone, or degenerative tears in an already arthritic knee where repair is unlikely to succeed, I discuss partial meniscectomy as the more realistic option, understanding that it trades a faster recovery for a meaningfully higher long-term risk of arthritis and knee replacement. For patients with an already meniscus-deficient knee from a prior meniscectomy who develop pain, meniscal allograft transplantation is a separate option worth discussing in appropriately selected patients under 50, with survivorship of about 73.5% at 10 years (Novaretti et al., Arthroscopy 2019).