Ligament reconstruction involves replacing the torn ligament with a tendon (graft) from your knee or a synthetic material, and attaching the graft in place with screws. This procedure is performed with the use of the arthroscope. The anterior cruciate ligament (ACL) is the most common ligament requiring reconstruction procedures. The torn ligament is excised arthroscopically and new ligament is prepared by ligament grafts taken from your own body. Bony tunnels are prepared in femur and tibia using specialized instruments through which the new ligament is passed and fixed with special screws. This procedure requires relative rest orleave from your work or studies for about 3 weeks after which you will be allowed normal day to day activities.