Grade I and Grade II multiligament knee injuries are usually addressed conservatively by a treatment protocol of rest, ice, compression and elevation.
Grade III multiligament injuries require surgery. Moreover, unlike grade III single ligament injury, the surgery is usually performed soon after the injury and often involves more than one surgery.
The surgical reconstruction of damaged knee ligaments is usually performed arthroscopically. Arthroscopic surgery involves reconstruction of the torn ligament (or ligaments) utilizing a tissue graft taken from another part of the body, or from a donor.
The damaged ligament is replaced by the graft and fixed to the femur and tibia using metallic screws. Gradually, over a period of few months, the graft heals.
After the multiligament knee reconstruction surgery, crutches may be required for up to six to eight weeks. Most patients can return to a high-level sport after a period of rehabilitation.