Alas, Pizza man, there isn't! If your achilles tendon had ruptured, it could be repaired surgically, but it's pretty much impossible to strengthen muscle, or muscle/tendon junctions, with an operation (the exception being hernia repairs, but even then it's not really the muscle that is strengthened).
All those advances in modern medicine and we can't cure the common cold or repair runners' calves. Bloody useless, eh?