A torn meniscus can be treated with physical therapy, injections, or surgery, depending on the type and location of the tear. Many tears, particularly those linked to age-related wear, respond well to nonsurgical treatment. The key factor that determines your options is blood supply: the outer third of the meniscus has good blood flow and can heal on its own or be surgically repaired, while the inner third has almost none and generally cannot.
Why Blood Supply Determines Your Options
The meniscus is divided into three zones based on how much blood reaches them. The outer edge, called the red-red zone, has a rich blood supply and heals the way most tissues do. The middle section, the red-white zone, has some blood flow. The innermost portion, the white-white zone, has virtually none. Tears in the outer zone have the best chance of healing, whether on their own or after surgical repair. Tears in the inner zone are far less likely to heal because blood carries the oxygen and nutrients tissue needs to knit back together.
This is why two people with a “torn meniscus” can get completely different treatment plans. A young athlete with a tear near the outer edge is a strong candidate for repair. An older adult with a degenerative tear in the inner zone may do just as well, or better, with physical therapy alone.
How a Meniscus Tear Is Diagnosed
Your doctor will likely start with a physical exam, bending and rotating your knee in specific ways to reproduce pain or a clicking sensation. The most accurate of these hands-on tests is the Thessaly test, which has about 91% sensitivity and 91% specificity. The more commonly known McMurray test is less reliable, catching roughly 72% of tears.
An MRI is the gold standard. It correctly identifies meniscus tears about 94% of the time and rules them out with roughly 96% accuracy. If the physical exam strongly suggests a tear, your doctor will typically order an MRI to confirm the diagnosis and determine the tear’s exact location, shape, and size, all of which guide the treatment decision.
Nonsurgical Treatment
For degenerative tears (the kind that develop gradually with age), physical therapy is now considered the first-line treatment. A 2024 systematic review found that exercise-based physical therapy provides comparable or superior short-term pain reduction and better knee strength compared to surgery, with fewer risks. At three months, patients who did physical therapy had greater pain reduction at rest and stronger quadriceps muscles than those who had surgery alone. Beyond three months, outcomes between the two approaches evened out, which makes a strong case for trying therapy first.
Conservative treatment typically involves ice, compression, and anti-inflammatory medication to manage initial symptoms, followed by a rehabilitation program that includes knee mobility work, progressive strengthening, and gradual return to activity guided by how your knee feels. There are no strict weight-bearing restrictions with this approach. Stable vertical tears, horizontal cleavage tears, and tears that aren’t causing mechanical symptoms like locking or catching are all candidates for this route.
Injections for Pain and Healing
Hyaluronic acid injections can provide meaningful relief for meniscus tears managed without surgery. In a randomized controlled trial of 50 patients, those who received two hyaluronic acid injections two weeks apart had significantly less pain starting at day 14, and the improvement held at every follow-up. Even more notably, 92% of the injection group showed a reduction in the length and depth of their tear on MRI by the final evaluation, compared to just 20% in the group that received standard conservative care alone. Side effects were minimal, limited to brief pain at the injection site.
Stem cell therapy is an emerging option but remains experimental. The only randomized controlled trial to date, involving 55 patients who received stem cell injections after partial meniscus removal, found that 24% of those in the lower-dose group showed increased meniscus volume on MRI at 12 months. Several smaller studies and case reports have shown promising results, including near-complete tear resolution on imaging and improved pain scores lasting over a year. But the evidence base is still too small to consider this a standard treatment.
When Surgery Makes Sense
Surgery is typically recommended when the knee locks, catches, or gives way, when a tear is in a repairable zone with good blood supply, or when several weeks of physical therapy haven’t improved symptoms. The two main surgical options are meniscus repair and partial meniscectomy (removing the damaged portion), and the distinction between them matters a great deal for your long-term knee health.
Surgeons decide between the two based on several factors: where the tear sits relative to the blood supply zones, the tear pattern, how long symptoms have been present, and patient age. Younger patients with tears in the vascular outer zones are better candidates for repair. Older patients and those with degenerative changes are more likely to undergo meniscectomy because their tissue has less blood supply and is less likely to heal after stitching. Complex tears tend to be treated with meniscectomy, while bucket-handle tears (a specific pattern where a flap displaces into the joint) are more commonly repaired.
Smoking also worsens outcomes after repair, likely because it further reduces blood flow to the healing tissue.
Why Repair Is Preferred Over Removal
Whenever a tear can be repaired, that option is strongly favored. A meta-analysis found that patients who had their meniscus repaired were significantly less likely to develop advanced knee osteoarthritis compared to those who had tissue removed, at an average follow-up of about four years. The repair group also had a significantly lower rate of eventually needing a knee replacement.
This makes intuitive sense. The meniscus acts as a shock absorber between your thigh bone and shin bone. Removing even a portion changes how force distributes across the joint, accelerating cartilage breakdown over time. Preserving as much meniscus tissue as possible protects the joint for years to come.
Recovery After Partial Meniscectomy
Recovery from partial meniscus removal is relatively fast. You can bear weight on the leg almost immediately, using crutches for the first few days. Most people wean off crutches within a week and begin stationary cycling and strengthening exercises by weeks one to two. Squats, leg presses, and hamstring curls typically start around weeks two to three. Running begins at four to six weeks, and full return to sports is possible by six to eight weeks.
Recovery After Meniscus Repair
Repair requires a longer, more cautious rehabilitation because the stitched tissue needs time to heal. How much weight you can put on your leg in the early weeks depends on the type of tear that was repaired:
- Longitudinal tears: Toe-touch to partial weight bearing initially, with full weight bearing allowed at one to two weeks.
- Horizontal tears: Non-weight bearing to partial weight bearing, reaching full weight bearing at about five weeks.
- Radial tears: Non-weight bearing to toe-touch, with full weight bearing at four to six weeks.
- Root tears: Non-weight bearing, with full weight bearing not allowed until six to eight weeks.
The first two weeks focus on protecting the repair with limited motion (typically 0 to 90 degrees of bending) and gentle quad activation. Light resistance exercises and stationary cycling begin around weeks three to four. Treadmill walking and step-ups start at weeks four to five. Jogging typically begins around weeks six to eight, and cutting or pivoting drills start after week eight. Full return to sport generally takes at least 12 weeks, sometimes longer depending on the sport and how the knee responds.
Throughout this process, the guiding principle is the same whether you had surgery or not: progression is driven by how the knee feels and functions, not by a rigid calendar. Swelling, pain, and instability are signals to slow down, while consistent strength and confidence under load are signs you’re ready for the next phase.