Barefoot running protocols have been effective in decreasing anterior and lateral chronic exertional compartment syndrome (CECS), but they have not been studied in patients with posterior CECS. Additionally, there is a lack of research that has investigated a barefoot running protocol in a college lacrosse athlete. The purpose of this case report was to examine the effects of adopting a forefoot strike pattern, through a barefoot running program, in a 20-year-old college lacrosse player with posterior chronic exertional compartment syndrome.https://dune.une.edu/pt_studcrposter/1134/thumbnail.jp