Meniscal Tear: Repair, Root Repair & Allograft

If you have been told you have a meniscus tear, the question worth asking is "do I need surgery." If the answer is yes, then it is: what type of tear do I have, can it be repaired, and what is the long-term cost of removing it. The answer to those three questions is what determines the right operation — or whether non-surgical care is appropriate. Decades of follow-up data have made one thing clear: the meniscus matters. A patient with a subtotal meniscectomy at age 30 is at significantly higher risk for arthritis at age 50 than a patient who had the same tear repaired or who tolerated it without surgery. The meniscus-preservation principle drives modern meniscal surgery, and it drives Dr. Strickland's practice in particular.

This page covers what the meniscus is and why it matters, how a torn meniscus feels, how tears happen, the main tear patterns, the special case of root tears, how the diagnosis is made, when non-surgical care is appropriate, the surgical options compared, the MISHA-augmented root repair Dr. Strickland published, meniscal allograft transplantation, recovery for each procedure, what to expect on surgery day, risks, common patient concerns, insurance and cost, access and office locations, patient outcomes, and frequently asked questions. For closely related topics, see ACL tear surgery (often torn alongside the meniscus — especially the lateral meniscus in acute injuries and the medial meniscus in chronic ACL deficiency); MACI cartilage repair and cartilage transplantation when the tear is associated with cartilage damage; joint preservation and osteotomy when alignment correction is needed alongside meniscus work; the medial meniscus root repair with MISHA shock absorber page for the published combined technique; and medial meniscus posterior root tears for a deeper dive on MMRTs.

Why the Meniscus Matters

Each knee has two menisci — a medial meniscus on the inner side and a lateral meniscus on the outer side. They are C-shaped wedges of fibrocartilage that sit between the femur (thighbone) and the tibia (shinbone). Their job is to:

• Absorb shock — the meniscus distributes load across a much larger contact area than bone-on-bone contact would, reducing peak pressures on the cartilage
• Provide stability — the meniscus deepens the effective socket of the tibial plateau and resists shear forces during cutting and pivoting
• Lubricate the joint — the meniscus contributes to synovial fluid distribution
• Protect the cartilage — functioning menisci slow the rate of cartilage wear over decades

The meniscus has a limited blood supply — only the outer one-third (the "red zone") receives meaningful vascular supply from the joint capsule. The middle third has marginal supply ("red-white zone"), and the inner two-thirds are essentially avascular ("white zone"). This anatomy drives the repair decision: tears in the outer vascular red zone have biological capacity to heal with repair. Tears in the inner avascular white zone typically do not heal with repair and are addressed with conservative debridement of only the unstable torn portion.

The clinical implication is straightforward: removing meniscus tissue can accelerate cartilage wear in that compartment. Long-term studies consistently show higher rates of compartmental arthritis after subtotal meniscectomy than after meniscus-preserving treatment of the same tear. Modern meniscal surgery prioritizes repair whenever the pattern, location, and tissue quality allow it. For a patient-friendly walk-through of the symptoms that suggest a tear may improve with non-operative care, see 5 symptoms of a torn meniscus that will self-heal.

How a Meniscal Tear Feels

Symptoms vary with tear pattern, location, and whether the torn fragment has displaced into the joint:

• Joint-line pain — pain on the inner side of the knee (medial meniscus) or outer side (lateral meniscus) is the most common symptom
• Pain with twisting and pivoting — sports cuts, getting in and out of a car, deep squatting
• Swelling — often appearing hours to a day after the inciting event in acute tears, or coming and going in degenerative tears
• Mechanical symptoms — catching, locking, or a sensation that something is moving in the joint when the torn fragment displaces
• Inability to fully extend — particularly with bucket-handle tears that have flipped into the notch (a true mechanical block to extension)
• Clicking or popping with motion
• Sense of giving way — usually quadriceps inhibition rather than true ligamentous instability in most cases
• Pain at end-range flexion — the meniscus is loaded most in deep flexion

Acute tears in younger patients usually present with a clear inciting event — a twist, a deep squat, a contact injury — followed by the symptom pattern above. Degenerative tears in patients over 40 often present without a discrete event. Many degenerative tears are incidental findings on MRI in patients over 50 who have no symptoms — the presence of a tear on imaging does not, by itself, mean surgery is needed. The clinical picture matters more than the MRI report. Patients sometimes confuse meniscus pain with an ACL injury — for the distinction, see the difference between ACL and meniscus tears.

How Tears Happen

Acute tears (younger patients)

Forceful twisting or rotation with a planted foot is the classic mechanism. Soccer cuts, basketball pivots, skiing falls, and deep squatting under load are common backstories. The femur rotates one direction while the tibia is fixed in another, and the meniscus — caught between the two — tears under the shear load. Direct impact (a fall onto the knee or a tackle) is a less common but real mechanism. Acute tears are often associated with concurrent ligament injury, particularly ACL tears — lateral meniscus tears are especially common in acute ACL injuries, while medial meniscus tears are more common in chronic ACL deficiency. For a real-world example of combined ACL plus meniscus injury, see a skier with combined ACL and meniscus tears.

Degenerative tears (patients over 40)

The meniscus weakens with age, and small tears can develop with everyday activities or no discrete trauma at all. Patients often present with insidious-onset joint-line pain that has been building for weeks. Many degenerative tears respond well to conservative care — for activity guidance during recovery, see Dr. Strickland's patient-education posts on 6 exercises to do with a torn meniscus and exercises to avoid with a torn meniscus.

Tear Patterns and What They Mean

The Root Tear — a Special Case

A meniscal root tear is a tear of the meniscus at its bony attachment to the tibia. Unlike a tear in the body or horn of the meniscus — where the surrounding intact tissue still provides some shock absorption — a root tear destabilizes the entire meniscus. The hoop-stress fibers that allow the meniscus to compress and distribute load are disrupted at the attachment, and the meniscus extrudes outward under load. The biomechanical effect is essentially equivalent to having the entire meniscus removed.

The clinical consequence is significant. Untreated medial meniscus posterior root tears (MMRTs) cause rapid degeneration of the medial tibiofemoral compartment with high rates of conversion to arthroplasty — that statement is taken directly from Dr. Strickland's published article on the topic. For this reason, root tears in patients with otherwise reasonable cartilage and good alignment warrant prompt surgical evaluation for transtibial pull-through repair. For the deeper clinical discussion, see medial meniscus posterior root tears.

Transtibial pull-through repair restores the bony attachment by drilling a tunnel through the tibia, passing sutures from the torn root through the tunnel, and tying them over a button on the front of the tibia. When the tissue is acceptable, this restores meniscal function and protects the cartilage. Recovery historically requires 6 weeks of non-weight-bearing — a rate-limiting step that has been particularly challenging for working-age patients to tolerate. Dr. Strickland's MISHA-augmented technique (covered below) addresses that constraint directly.

How the Diagnosis Is Made

History and Physical Exam

Mechanism of injury (twist, deep squat, contact event, or insidious onset), location of pain (medial vs. lateral joint line), mechanical symptoms (catching, locking, inability to fully extend), prior knee injuries or surgeries, and current activity level.

The exam includes:

• Joint-line tenderness — the most sensitive single physical finding
• McMurray's test — rotation under axial load to elicit pain or a click
• Thessaly test — standing pivot to load the meniscus
• Range of motion assessment — particularly looking for a true mechanical block to extension (suggesting a displaced bucket-handle tear)
• Effusion assessment
• Ligamentous stability — meniscus tears commonly accompany ACL injury
• Patellar exam — to distinguish from patellofemoral pain

Imaging

• Standing weight-bearing x-rays — rule out arthritis, assess overall alignment, look for joint-space narrowing or extruded meniscus (a finding that suggests a root tear or absent meniscal function)
• MRI — the definitive imaging study for meniscal tears. Characterizes tear pattern, tear location relative to the red, red-white, and white zones, associated cartilage status, and concurrent ligament injury. Required before any surgical decision-making
• CT arthrogram — reserved for patients who cannot have MRI (pacemaker, certain implants)

When Non-Surgical Care Is Appropriate

Many meniscal tears, particularly degenerative tears in patients over 40 without true mechanical locking, respond well to non-surgical care. Per Dr. Strickland's patient-facing guidance, the symptoms most likely to settle with conservative management are intermittent pain without locking, swelling that resolves quickly, and pain that responds to a structured rehab and strengthening program.

• Activity modification — reduce or substitute activities that load the affected meniscus (deep squatting, twisting under load, high-impact pivoting)
• NSAIDs and ice for inflammatory control during flares
• Structured PT — quadriceps and hip-stabilizer strengthening, range-of-motion preservation, gait training. Cycling, swimming, and elliptical training are usually well tolerated
• Selective injection therapy — cortisone for flares; hyaluronic acid for arthritic pain in selected patients

Surgery is considered when:

• Symptoms persist despite 6 to 12 weeks of well-executed non-surgical care
• There is true mechanical locking from a displaced tear (a bucket-handle tear flipped into the notch is one of the few reasons to operate sooner rather than later)
• The tear is a repairable tear pattern in a younger active patient — meniscus preservation is the priority and earlier repair gives better tissue quality for healing
• The tear is a root tear that will accelerate arthritis if left alone
• There is concurrent ACL injury requiring surgery and the meniscus tear can be addressed in the same operation

Surgical Options Compared

MISHA-Augmented Root Repair — Dr. Strickland's Published Technique

The traditional bottleneck after a medial meniscus posterior root repair has been the 6 weeks of non-weight-bearing required to protect the repair while it heals. For working-age patients with jobs, families, and obligations that don't pause for surgery, that protocol is genuinely difficult to comply with — and non-compliance is the most common reason a root repair fails biologically.

In 2024, Dr. Strickland published Medial Meniscus Root Repair with Implantable Shock Absorber Placement: A Combined Technique for Early Partial Weightbearing in Arthroscopy Techniques. The technique combines two elements in one operation:

1. Transtibial pull-through repair of the medial meniscus posterior root, restoring the bony attachment and hoop-stress function
2. Placement of the MISHA Knee System (Moximed, Fremont, CA) — an implantable shock absorber that sits outside the joint and mechanically unloads the medial tibiofemoral compartment

By unloading the medial compartment with the implant, the root repair is mechanically protected and the patient can begin partial weight-bearing earlier than the traditional 6-week non-weight-bearing protocol. The combined technique was developed specifically for the patient population whose alternatives would otherwise be limited to high tibial osteotomy or arthroplasty (partial or total knee replacement) — younger working-age patients with a root tear and early medial compartment arthritis.

For the full clinical detail, the surgical video, and the published case description, see the dedicated page on medial meniscus root repair with implantable shock absorber placement. Candidacy is determined after MRI review, standing alignment films, and a careful examination of cartilage status.

Meniscal Allograft Transplantation

Meniscal allograft transplantation is a meniscus-replacement procedure for patients who have had a prior subtotal meniscectomy and now have persistent pain in the affected compartment. The classic candidate is a patient in their 30s or 40s who had a meniscectomy years earlier (often for an injury that pre-dated the modern preservation-first approach) and is now experiencing compartmental joint pain in a knee that still has reasonable cartilage and stable ligaments.

The procedure replaces the missing meniscus with a size-matched donor meniscus, secured with fixation at the anterior and posterior horns and sutured at its periphery. When the conditions line up, allograft transplantation can restore meniscal function and substantially relieve compartmental pain.

Candidacy depends on:

• Prior meniscectomy with persistent compartmental symptoms in that compartment
• Intact cartilage — the procedure does not work in arthritic knees
• Good alignment — or correctable with concurrent osteotomy (see joint preservation and osteotomy)
• Stable ligaments — concurrent ACL reconstruction is sometimes needed (see ACL tear surgery)
• Realistic expectations — allograft is a salvage procedure for a meniscus-deficient knee, not a routine first-line option

For patients with medial meniscus posterior root tears and early medial compartment arthritis who are not allograft candidates, the MISHA-augmented root repair covered above is often the more appropriate joint-preserving option.

What to Expect on Surgery Day

Arthroscopic meniscus surgery is performed as an outpatient procedure — you go home the same day. This is the typical patient experience and your specific protocol is reviewed at consultation:

• Arrival and pre-op — you arrive a couple of hours before the procedure for intake, change into a gown, and meet the anesthesia team
• Anesthesia consultation — the anesthesiologist reviews your history and discusses the anesthesia plan. For Dr. Strickland's meniscus procedures, this is typically regional anesthesia (a spinal block with sedation) rather than general anesthesia. During surgery, a periarticular block is also placed around the knee joint to help reduce pain during the first day after surgery as part of an opioid-sparing protocol.
• Surgery — arthroscopic meniscectomy or simple repair typically takes 30 to 60 minutes; transtibial root repair takes longer; combined root repair with MISHA placement takes longer still
• Recovery room — you wake up in the recovery area; physical therapy begins reviewing your post-operative protocol the same day
• Going home — you go home with crutches (and a hinged brace if you had a repair), ice, prescribed pain medication, and clear written instructions. A responsible adult must drive you home
• First 48 hours — ice, elevation, prescribed medications, gentle motion within the limits of your brace and protocol

For a meniscectomy, weight-bearing as tolerated begins immediately and most patients are off crutches within a few days. For a repair, the brace and protected weight-bearing protocol is important — non-adherence is the most common reason a repair fails. Your specific protocol depends on the procedure performed and is reviewed in detail at the pre-op visit.

Recovery Timeline

The repair recoveries are slower than meniscectomy because the repair must heal — protected weight-bearing and restricted motion in the early phase prevent disruption of the suture construct. The trade-off is preserving the meniscus and protecting the cartilage for decades, which makes the slower recovery worth it for the right patient. For a real-world recovery story, see back in the game after a torn meniscus.

Risks of Meniscus Surgery

Arthroscopic meniscus surgery is a well-established procedure with predictable outcomes for most patients, but no surgery is risk-free. The risks reviewed at consultation include:

• Re-tear of a repaired meniscus — the most relevant procedure-specific risk after repair, particularly with non-adherence to weight-bearing and motion restrictions in the early healing phase
• Failed healing of a root repair — the medial meniscus posterior root repair is biologically demanding and protected weight-bearing protocols matter
• Stiffness or arthrofibrosis — reduced by structured early-phase PT and adherence to motion progression
• Progression of arthritis — the long-term consequence of meniscus tissue loss; reduced by repair when feasible
• Infection — uncommon but a serious complication if it occurs
• Blood clot (DVT or pulmonary embolism) — mitigated by early mobilization and individualized prophylaxis
• Nerve or vessel injury — rare; the saphenous nerve is particularly relevant during medial-side inside-out repair techniques
• Anesthesia-related risks — rare allergic reactions, nerve injury or irritation from a regional block. During surgery, local anesthetic is also placed around the knee joint to help reduce pain during the first few hours

The specific risk profile for your case depends on the procedure performed, your tear pattern, alignment, cartilage status, and any prior surgery on the knee. These are reviewed at consultation, and several of the risks above are modifiable by adherence to the post-operative protocol.

Common Patient Concerns

The three concerns we hear most often before meniscus surgery, with honest answers:

Insurance and Cost

Arthroscopic meniscus surgery is covered by all major commercial insurance plans, Medicare, and most self-funded and union plans when the diagnosis and indication for surgery meet medical-necessity criteria. The variables that drive your specific out-of-pocket cost are:

• Your plan's deductible and coinsurance — the structure of cost-sharing differs significantly between plans
• In-network vs. out-of-network status — for the surgeon, the facility (Hospital for Special Surgery or affiliated outpatient surgery center), and the anesthesia group
• The bundled vs. separate billing for the surgeon, facility, anesthesia, imaging, physical therapy, and any concurrent procedures (ACL reconstruction, cartilage work, alignment correction)
• Specific implant coverage — the MISHA Knee System is reviewed for coverage on a case-by-case basis depending on payer; we discuss this directly with you before surgery if MISHA is part of the plan
• Out-of-network benefits — if you have them and choose to use them; we can provide the codes you need to verify your benefits in advance

Before surgery, our office verifies your benefits, obtains pre-authorization where required, and reviews the estimated out-of-pocket cost with you. If your plan doesn't cover a specific aspect, we discuss it openly before the operation, not after. For benefits verification or to discuss self-pay arrangements, call us at (646) 960-7227 or contact the office.

When to Seek a Sub-Specialty Second Opinion

A sub-specialty second opinion is particularly worth seeking when:

• You have been told you need meniscectomy and want to know whether your tear can be repaired instead
• You have a meniscal root tear and want a clear answer on whether transtibial repair is appropriate — and whether the MISHA-augmented technique is right for your situation
• You have symptoms after a prior meniscectomy and want to understand allograft transplantation candidacy
• You have a combined meniscus and ACL injury and want a comprehensive plan that addresses both in one operation
• You have been told you need a knee replacement for compartmental arthritis after meniscectomy and want a second opinion on joint-preserving options first
• You are an active patient facing the decision between meniscus preservation (slower recovery) and meniscectomy (faster recovery, long-term cost)

Access & Office Locations

Dr. Strickland sees meniscus patients at two offices, both of which work with patients traveling in from outside the immediate area:

• New York City (primary): Hospital for Special Surgery, East River Professional Building, 523 East 72nd Street, 2nd Floor, New York, NY 10021. On the Upper East Side, accessible from Manhattan, the outer boroughs, Long Island, Westchester, and northern New Jersey via the Queensboro and Triboro bridges and the FDR Drive. Phone: (646) 960-7227.
• Stamford, CT (satellite): Stamford Chelsea Piers, 1 Blachley Road, Stamford, CT 06902 — convenient for patients in Fairfield County, lower Connecticut, and Westchester.

For patients traveling to New York from out of state for sub-specialty meniscus care, we coordinate consultation and surgery scheduling to minimize travel and align with imaging review and pre-operative work-up. Many out-of-state patients travel to HSS specifically for second opinions on repair candidacy, root tear evaluation, MISHA-augmented root repair, and meniscal allograft transplantation.

Patient Outcomes

The point of all of the above — repair-first philosophy, root repair, MISHA augmentation, allograft when needed — is to get the right patient back to the activity that matters to them while protecting the cartilage for the next several decades. A few of Dr. Strickland's meniscus patient stories on this site:

• Brenda Yee — medial meniscus tear and arthroscopic repair
• How to know when your torn meniscus should be surgically repaired
• Back in the game after a torn meniscus
• A skier with combined ACL and meniscus tears

For the full collection of patient outcomes across knee specialties, see Dr. Strickland's success stories.

Frequently Asked Questions

Related Specialty Care

For combined meniscus and ACL injuries, see ACL tear surgery. For alignment correction when meniscus loss has produced compartmental wear, see joint preservation and osteotomy (HTO and DFO). For cartilage repair when the meniscus tear is associated with focal cartilage damage, see MACI cartilage repair and cartilage transplantation. For broader sports trauma context, see sports injuries. For the long-term consequences of meniscus loss, see knee arthritis. For the published combined root-repair technique, see the medial meniscus root repair with MISHA shock absorber page.