How long does it take to rehab a severed Achilles tendon?

Rehab. Rehabilitation for a surgically treated Achilles tendon tear can take up to 1 year. If you look at the data on nfl players, it took them 11 months on average to return to the nfl after an Achilles tear.
3 to 6 months. Achilles tendons take about 3 months to heal and 3 months to rehab. Return to competitive sports is usually six months minimum.