In ACL reconstruction, the torn ligament is replaced with a graft, either from the patient's own body or with donor tissue. The tighter and more secure the graft, the better the result will be for the patient in the long term. New technology has made tighter, more secure grafts possible.
Grafts may be taken from the patient's hamstring, quadriceps, or patella (kneecap) tendon. Donor or cadaver (allograft) tissue may also be used. Screws or other fixation devices anchor the graft and hold it in place.