Overview
ACL reconstruction is surgery to replace a torn anterior cruciate (KROO-she-ate) ligament (ACL) — a major ligament in your knee. ACL injuries most commonly occur during sports that involve sudden stops and changes in direction — such as basketball, soccer, football, downhill skiing and gymnastics.
In ACL reconstruction, the torn ligament is removed and replaced with a piece of tendon from another part of your knee or from a deceased donor. This surgery is an outpatient procedure that's performed through small incisions around your knee joint.
ACL reconstruction is performed by a doctor who specializes in surgical procedures of the bones and joints (orthopedic surgeon).
Anterior cruciate ligament
Ligaments are strong bands of tissue that connect one bone to another. The ACL — one of two ligaments that crosses the middle of the knee — connects your thighbone (femur) to your shinbone (tibia) and helps stabilize your knee joint.
Why it's done
Most ACL injuries happen during sports and fitness activities that can put stress on the knee:
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