Surgery is typically performed after the injured knee regains full range of motion and proper
muscle control, generally 3 to 4 weeks following the injury. During ACL surgery, the torn
ligament is replaced (reconstructed) with a graft because the ligament is so damaged that a
simple repair is usually not sucessful. Common grafts used to replace the torn ligament include
the hamstring tendons, bone-patellar tendon-bone, quadriceps tendon or allografts from
cadavers. The goals of the surgery are to reconstruct the torn ligament, repair any other
damaged structures (including meniscus, other ligaments, or cartilage) and restore function and
stability to the knee.

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