What is multi-ligament knee reconstruction, and who is it for?

Multi-ligament knee reconstruction rebuilds more than one of the knee's stabilizing ligaments in a single surgery.

The knee is held by four main ligaments, and a high-energy injury such as a knee dislocation in a car crash, a fall, or a sports collision can tear two or more at once. This surgery is for those serious combined injuries, where rebuilding only one ligament would leave the knee unstable. It is a bigger operation than a single ligament repair and is planned carefully around your specific injury.

What is tried before surgery?

The first steps protect and settle the knee.

The joint is stabilized, swelling is controlled, and imaging maps exactly which ligaments are torn. Some combined injuries need surgery sooner rather than later, so the timing is a medical decision made with your surgeon. Physical therapy supports the knee before and after surgery. For these severe injuries, reconstruction is usually needed to restore a stable knee, and the plan is built around which ligaments are involved.

How does multi-ligament knee reconstruction work?

The surgeon rebuilds each torn ligament with a graft, a piece of tendon that can be your own tissue or donor tissue.

Grafts are passed through small tunnels in the bone and fixed to recreate each ligament, including the two cruciate ligaments that cross in the center of the knee. The work is done with arthroscopy, a small camera through tiny incisions, along with the incisions needed for the tunnels. Because several structures are repaired, the surgery is longer and staged carefully.

What is recovery like after multi-ligament knee reconstruction?

Recovery is longer and more gradual than after a single-ligament surgery.

The knee is protected in a brace with limited weight and motion early on, then rebuilt through months of physical therapy. Return to sport is measured in many months and depends on which ligaments were involved and how the knee heals, according to general guidance from the American Academy of Orthopaedic Surgeons. Your surgical team sets the pace, and these are ranges, not promises.

Read the full guide to preparing for surgery →

Your own recovery instructions come from the office and are specific to you. This page describes the general course, not a plan to follow.