During surgery to repair an Achilles tendon, your doctor will make an incision in the back of your calf. If a tendon is ruptured, he might be able to repair it by sewing the severed ends together. However, if there’s tissue degeneration or extensive damage in the tendon, he might have to replace part or even all of the Achilles tendon with a graft. The graft is usually tissue taken from another part of your foot.It’s recommended to use minimally invasive techniques to carry out an Achilles tendon repair. Rather than a single, long incision, minimally invasive surgery uses several small incisions and specialized tools that minimize tissue damage.