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Home / Education / Knee / Others / Multiligament Knee Reconstruction

Multiligament Knee Reconstruction

Ligaments are fibrous tissue bands that connect bones and stabilize joints. The knee joint has four major ligaments – the anterior cruciate ligament, posterior cruciate ligament, lateral collateral ligament, and medial collateral ligament.

A multi-ligament knee injury involves injury to two or more ligaments of the knee.  These injuries are usually high energy in nature such as motor vehicle accidents, severe fall from height, or during sports such as skiing and football.

Multi ligament knee injury requires reconstruction surgery to rebuild the damaged tissues and prevent problems associated with an unstable knee such as premature osteoarthritis.

Symptoms

Patients with multi-ligament knee injuries may experieance pain, swelling, limited range of motion, injuries to nerves and arteries of the leg, and knee instability.

Diagnosis

The main problem in diagnosing patients with multiple ligament tears is to accurately detect which ligaments are torn, and the extent of the tears.

The diagnosis starts with a comprehensive clinical evaluation by an orthopaedic surgeon.

The main imaging techniques which are employed for the diagnosis are knee X-rays and MRI scan of the joint.

In addition, functional testing can be performed during an arthroscopic examination, before the surgical reconstruction, to help confirm the results of the diagnosis. This testing includes tests such as “gap test” which measures the space between the femur and tibia.

Contraindications for reconstructive knee surgery include previous knee joint infection, reflex sympathetic dystrophy, complex regional pain syndrome, and morbid obesity.

Procedure

During multiligament knee reconstruction surgery, ligaments are reconstructed using a graft taken from the patient (autograft) or donor tissue (allograft).

Surgical reconstruction is usually performed arthroscopically through tiny incisions with the use of an arthroscope and small surgical instruments.  Your surgeon will create a tunnel in the thigh and tibia bone using a small drill.  Your surgeon then inserts the grafts into the tunnel to replace the torn ligaments.

After the grafts are placed, fixation devices are used to secure the grafts and hold the ligament in place until healing occurs.

Post-operative care

Physical therapy is recommended for restoration of the normal knee motion and muscle strength which avoids complications and also prolonged course of rehabilitation is recommended after surgery.

After multi-ligament knee reconstruction, crutches may be required for 6 to 8 weeks.

Risks and complications

Unfortunately, there can be failure of ligament reconstruction surgery, to restore normal stability of the knee joint. Reasons for such failure may be due to errors in surgical techniques, failure of graft integration, inadequate rehabilitation, post operative infection, and traumatic re injury.

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