Rhabdomyolysis attributable to severe overuse of the supraspinatus muscle: a report of two cases.

Rhabdomyolysis can occur after overuse of or injury to any muscle. This results in cell membrane compromise and the escape of cellular contents into the extracellular fluid. After strenuous exercise, a small amount of rhabdomyolysis normally occurs but is usually self-limited and does not progress to compartment syndrome. Two cases diagnosed as supraspinatus compartment syndrome have been reported in the literature; however, the clinical presentation was similar to the two cases with rhabdomyolysis presented here.