Contribution of medical resonance imaging in the return to physical activity after exertional rhabdomyolysis a case report.

Introduction: Exertional rhabdomyolysis (ER) is the breakdown of muscle cells that occurs after intensive physical activity. Although a cautious and gradual return to physical activity (RTPA) is recommended after an episode of ER, physical sequelae are reported long afterwards.

Case Report: We present the case of a 31-year-old untrained amateur runner with no prior medical history who developed heat stroke, ER, and acute kidney failure on the occasion of a half-marathon. Three months later, whereas the patient was symptom-free and CK levels were normal, an MRI revealed typical signs of rhabdomyolysis, which normalized thereafter.

Discussion: Given that clinical and biological data inform RTPA decisions, the delay between clinical biological and MRI normalization may cause an RTPA to be initiated prior to full muscle recovery, which could account for the symptoms' prolonged persistence. In sportspeople who have recovered and their CK blood levels are returned to normal, MRI data could defer the RTPA if MRI abnormalities persist or, conversely, give it the green light.