ACL is important ligament of knee which gives anterior stability. ACL is usually injured in twisting injuries of knee, commonly in sports like football, tennis, basketball. Symptoms are pain, swelling, knee joint giving way (instability) during activities. MRI is usually used to diagnose it. X ray is done to look for bony injury/ avulsion fracture.
ACL reconstruction is required in treatment of full thickness ACL tear with instability. Nowadays anatomical ACL reconstruction with hamstring tendon graft is preferred treatment. One or two tendons from hamstring muscles, usually from same side, used to create new ligament. Graft is usually fixed with endobutton (small titanium button) on upper side on femur (thigh bone) and screw or suture disc on lower side in tibia (leg bone). Bio absorbable screws can also be used which dissolve automatically over period of time. Physiotherapy is important part in proper recovery.