SHR # 2888:: Reversing Atrophywith Prolotherapy and PRP; New Study - Adam Girmann MD Candidate - Injury, especially to nerve innervation, can cause a rapid degradation to muscle referred to as atrophy. Having a leg in a cast for a couple months makes a muscle shrink by up to 40% quickly. For a bodybuilder this is tragic. The rapid loss of hard-earned muscle can derail a career. Regaining that muscle may not happen if the nerves are damaged permanently. This new study shows the possibility of a work-around that may not even require working the muscle. And may even preserve muscle and halt atrophy.