Meniscal cartilage replacement therapy

Meniscal Cartilage Replacement Therapy

Diagram of the knee joint showing the meniscus.

Meniscal cartilage replacement therapy is a surgical procedure aimed at restoring the function of the meniscus in the knee joint. The meniscus is a C-shaped piece of cartilage that acts as a cushion between the femur and tibia. It plays a crucial role in load distribution, shock absorption, and joint stability.

Anatomy of the Meniscus

The knee joint contains two menisci: the medial meniscus and the lateral meniscus. These structures are composed of fibrocartilage and are located on the tibial plateau. The menisci are essential for maintaining the health of the knee joint by distributing weight and reducing friction during movement.

Indications for Meniscal Replacement

Meniscal replacement therapy is considered when there is significant damage to the meniscus that cannot be repaired through conventional meniscectomy or meniscal repair. Indications include:

• Irreparable meniscal tears
• Previous meniscectomy leading to joint pain
• Early osteoarthritis due to meniscal deficiency

Types of Meniscal Replacement

There are several approaches to meniscal replacement, including:

• Meniscal Allograft Transplantation (MAT): This involves the transplantation of a donor meniscus into the patient's knee. The allograft is typically sourced from a cadaver and matched to the patient's size and shape.

• Synthetic Meniscal Implants: These are made from biocompatible materials designed to mimic the function of the natural meniscus. They are used when allograft tissue is not available or suitable.

Surgical Procedure

The procedure is typically performed arthroscopically. The steps include:

1. Preparation: The damaged meniscus is removed, and the joint is prepared for the new implant. 2. Implantation: The allograft or synthetic implant is inserted and secured in place. 3. Rehabilitation: Post-operative rehabilitation is crucial for recovery and involves physical therapy to restore knee function.

Outcomes and Considerations

Meniscal replacement therapy can significantly improve knee function and reduce pain. However, outcomes depend on factors such as:

• Patient age and activity level
• Degree of joint degeneration
• Proper alignment and fixation of the implant

Complications

Potential complications include:

• Graft rejection or failure
• Infection
• Persistent pain or instability

Related Pages

• Knee joint
• Arthroscopy
• Cartilage
• Orthopedic surgery