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Meniscus Refixation: Procedure, Technique & Recovery

Meniscus refixation is a surgical procedure in which a torn meniscus in the knee joint is reattached to its original position, aiming to preserve the natural meniscal tissue.

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Things worth knowing about "Meniscus refixation"

Meniscus refixation is a surgical procedure in which a torn meniscus in the knee joint is reattached to its original position, aiming to preserve the natural meniscal tissue.

What is Meniscus Refixation?

Meniscus refixation is a surgical procedure in knee surgery in which a torn meniscus is not removed but instead reattached to its original position within the knee joint. The meniscus is a crescent-shaped cartilage disc that acts as a cushion between the femur (thigh bone) and the tibia (shin bone). It protects the articular cartilage, stabilizes the knee, and evenly distributes body weight. Whenever anatomically feasible and the blood supply to the tear site is sufficient, refixation is preferred over removal (meniscectomy) to preserve the long-term function of the knee.

Causes and Indications

Meniscus refixation is indicated when a meniscal tear has sufficient healing potential. Common causes of meniscal tears include:

Sports injuries, particularly involving twisting or pivoting movements
Traumatic impacts such as falls or accidents
Degenerative changes in older adults

Tears located in the red zone of the meniscus, meaning the outer third which is well-vascularized, are the most suitable candidates for refixation due to their strong healing potential. Tears in the inner, poorly vascularized area (white zone) generally do not heal reliably after suturing.

Diagnosis

A thorough diagnostic work-up precedes meniscus refixation:

Clinical examination: The physician assesses pain localization, range of motion, and joint stability.
Magnetic Resonance Imaging (MRI): MRI provides detailed images of soft tissue structures and reveals the location, type, and extent of the tear.
Arthroscopy: During diagnostic knee arthroscopy, the surgeon can directly evaluate the tear and, if appropriate, perform refixation in the same procedure.

Surgical Technique

Meniscus refixation is typically performed arthroscopically (minimally invasively). Small incisions are made around the knee through which a camera and surgical instruments are introduced. The torn meniscus is reattached using specialized sutures, anchors, or resorbable implants. Depending on the tear pattern and location, various suture techniques may be used:

Inside-out technique: Sutures are passed from inside the joint outward and tied on the outside of the capsule.
Outside-in technique: Sutures are introduced from the outside of the joint inward.
All-inside technique: The entire repair is performed arthroscopically, often using self-fixing implants or anchors.

Postoperative Care and Rehabilitation

Consistent postoperative management is essential for successful healing. In the initial weeks following surgery, the knee is typically immobilized in a brace and weight-bearing is gradually increased. A structured physiotherapy program helps rebuild muscle strength, restore range of motion, and restabilize the knee joint. Full return to sports is generally achieved after three to six months, depending on the healing process and the demands of the specific sport.

Prognosis and Benefits

The key advantage of meniscus refixation over meniscectomy is the preservation of the natural meniscal tissue. Studies demonstrate that retaining the meniscus significantly reduces the risk of early-onset knee osteoarthritis. Success rates for refixation in suitable tears exceed 80 percent. In the long term, patients benefit from improved joint function and reduced pain levels.

References

Deutsche Gesellschaft für Orthopädie und Unfallchirurgie (DGOU): Guidelines on Meniscal Disorders, 2022.
Mordecai SC et al. - Treatment of meniscal tears: An evidence based approach. World Journal of Orthopedics, 2014; 5(3): 233–241.
Roeddecker K, Münnich U, Nagelschmidt M - Meniscal healing: A biomechanical study. Journal of Surgical Research, 1994; 56(1): 20–27.

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