Meniscus Surgery
What Is Meniscus Surgery and When Is It Used?
Meniscus surgery repairs torn meniscal tissue or reshapes an irreparable unstable fragment inside the knee. Most procedures are performed arthroscopically through small portals with a camera and fine instruments. The goal is not simply to remove an abnormal MRI finding; it is to resolve a painful mechanical problem while preserving as much functional meniscus as possible.
Not every meniscus tear needs an operation. Tears that do not lock the knee or substantially limit daily function can often be managed through load modification and rehabilitation. Tear location, tissue quality, associated cartilage or ligament damage and the patient's goals guide the decision.
A knee that is physically blocked from straightening, a displaced bucket-handle tear or a recent traumatic tear with healing potential may need early surgical review. Persistent joint-line pain and catching despite appropriate non-surgical care may also justify assessment. The word “tear” on an MRI report alone is not an indication for surgery.
Who Is a Candidate and Who Should Try Non-Surgical Care First?
Repairable longitudinal tears, acute tears near the better-vascularised outer edge, root injuries and displaced fragments that lock the knee may be surgical candidates. A suitable tear found alongside anterior cruciate ligament surgery may also be repaired during the same operation. Age alone does not determine repairability; tear pattern and the tissue's ability to hold sutures matter.
Arthroscopy is generally not the first treatment for a degenerative tear in an osteoarthritic knee without true locking. Exercise, weight and load management, pain control and treatment of the wider joint problem come first. The assessment asks whether the tear is actually responsible for the symptoms or is one part of general degeneration.
- A displaced tear that physically locks the knee
- An acute tear in vascular tissue with realistic healing potential
- Painful catching and functional limitation that persist after suitable rehabilitation
- A root tear or associated ligament injury that substantially alters joint loading
Preparing for Meniscus Surgery
Preparation includes reviewing the history, examination and images, then discussing how repair and partial meniscectomy lead to different recovery plans. X-rays show joint space and osteoarthritis; MRI defines the tear and surrounding cartilage or ligaments. Final repairability may only become clear when the surgeon directly probes the tissue during arthroscopy.
Tell the surgical team about all medicines, blood thinners, allergies and any previous blood clot or anaesthetic problem. Smoking can impair tissue healing, so stopping is encouraged. Follow the anaesthetic team's individual instructions about fasting, medicines and arrival time rather than using generic advice.
- Clear safe pathways at home for moving with crutches
- Prepare an accessible place for rest, elevation and cold application
- Plan work, school and transport around expected weight-bearing limits
- Arrange an escort and support for the first day at home
How Is Meniscus Surgery Performed?
During knee arthroscopy, several small portals provide access to the joint. The camera gives an enlarged view while a probe, suture devices and trimming instruments enter through the other portals. Both meniscal surfaces, the root attachments, articular cartilage and ligaments are inspected systematically.
For meniscus repair, the tear edges are prepared and secured with sutures. Depending on location, the surgeon may use all-inside, outside-in or inside-out techniques. Each method aims to bring viable edges together so they can heal while maintaining the natural meniscal contour.
Partial meniscectomy removes only irreparable, unstable tissue that continues to catch; the stable peripheral rim is retained. Complete removal is avoided because less meniscal tissue means greater load on a smaller cartilage area. The choice between repair and trimming depends on tear pattern, vascularity and tissue quality.
Anaesthesia and Procedure Time
The operation may use general anaesthesia or regional anaesthesia that numbs the lower body. Selection reflects the patient's health, procedure and anaesthetic assessment. Pain is controlled during surgery, and a combination of medicines and local anaesthetic techniques may be planned for the early postoperative period.
A straightforward partial meniscectomy and a complex repair do not take the same time. Tear location, suture technique and additional ligament or cartilage work all affect duration. Many patients go home the same day, although health needs or combined procedures may require longer observation.
The First Days After Surgery
Early priorities are controlling pain and swelling, approaching full knee extension and reactivating the thigh muscles. Keep the dressing dry, use a wrapped cold pack rather than applying ice directly to skin, and elevate the leg while resting. Take prescribed medicines only at the stated dose and duration.
Weight bearing often begins early as comfort allows after partial meniscectomy. After repair, the tear location and fixation may require crutches, a brace, partial weight bearing and a flexion limit. Copying another patient's protocol can place a different repair at unnecessary risk.
- Use ankle pumps to support circulation
- Begin quadriceps contractions and permitted range-of-motion exercises
- Monitor the wound, temperature, calf and circulation in the foot
Meniscus Surgery Rehabilitation Timeline
Rehabilitation progresses at different speeds after trimming and repair. Motion, loading and strength can advance more quickly after partial meniscectomy. Repair must be protected while the tissue heals, so deep flexion and pivoting are limited early and the overall programme commonly lasts three to six months.
- Protection: control swelling, regain extension, activate the quadriceps and walk safely
- Motion: increase permitted flexion and prepare for stationary cycling
- Strength: add controlled squats, step work and hip and trunk exercise
- Advanced control: develop single-leg balance, running preparation and low-level jumping
- Return to sport: meet strength, agility and cutting criteria before gradual participation
Time alone does not authorise progression. Swelling, full movement, strength, walking quality and the knee's response the next day are reviewed together. Root and complex repairs may need a different protection period.
Returning to Work, Driving and Sport
A desk job and work involving prolonged standing, stairs, kneeling or heavy lifting require different return plans. Pain, swelling, safe walking and medication use are considered. Before driving, the patient should no longer rely on crutches or a restrictive brace and must be able to perform an emergency stop safely.
Return to sport is not based only on weeks since surgery. Full motion, no reactive swelling, adequate thigh and hip strength, single-leg control and sport-specific cutting ability are needed. Return can be earlier after partial meniscectomy, while biological healing after repair makes pivoting sports a months-long process.
Risks and Possible Complications
Meniscus surgery is commonly performed but is not risk-free. Potential complications include infection, bleeding, a deep-vein blood clot, stiffness, injury to nearby nerves or vessels and anaesthetic problems. Individual risk depends on health, the exact procedure and any additional surgery.
- Failure of the repair to heal or a recurrent tear
- Persistent pain, swelling or mechanical symptoms
- Muscle loss and restricted motion during a prolonged protection phase
- Higher cartilage loading after loss of meniscal tissue
Increasing redness or drainage, fever, new painful calf swelling, chest pain or shortness of breath are not expected recovery findings. Do not wait for a scheduled follow-up if these symptoms occur.
Factors That Influence the Result
Repair healing is influenced by vascularity, tear pattern, injury age and tissue quality. Alignment, cartilage condition, associated ligament damage, smoking and adherence to rehabilitation also matter. When a knee cartilage injury or advanced osteoarthritis is present, not all pain may come from the meniscus.
Repair takes longer to rehabilitate but preserves tissue when the tear is suitable. Partial meniscectomy allows faster progression, yet only the smallest necessary portion should be removed. No technique can guarantee healing or return to a previous sporting level; outcomes are specific to the patient and tear.
Alternatives to Meniscus Surgery
For many tears without locking, first-line care includes activity modification, control of pain and swelling, and progressive physiotherapy. Exercise does not suture the tear, but better movement, strength and load tolerance may restore function without surgery. Injections do not close a structural tear and are considered only for selected associated joint problems.
Meniscus transplant may be an option for selected younger, active people who have already lost most meniscal tissue and do not have advanced arthritis. It is not standard treatment for a new acute tear and requires a separate candidacy assessment.
When Should You Contact a Doctor?
Before surgery, a knee that cannot straighten, swells rapidly or cannot bear weight needs early assessment. After surgery, uncontrolled pain, fever, wound drainage, calf swelling, shortness of breath, a cold or pale foot, or new numbness may require urgent medical help.
For an overview of knee procedures, visit the Knee page. To request an individual assessment or appointment, use the Contact page. This information is educational; treatment is selected after the examination and images are considered together.