Treatment for a chronic Achilles tendon rupture may require a tendon graft. The graft can be taken from the back of the leg by sliding down a piece of the tendon (called a V-Y advancement) or using the tendon to the big toe (called the flexor hallucis longus).
Occasionally, a graft is taken from a cadaver (called an allograft Achilles). This has tremendous advantages in that the muscle of the patient is not weakened and is attached to the end of the tendon or directly to the heel bone. This is a very difficult operation, but will return and restore the most power back to the injured leg. The cadaver Achilles graft is used for very specific types of repairs in certain patients who need more strength in the leg.