The USOPC, IOC and FIFA confirmed Friday that Macario will be replaced by Lynn Williams on the 18-person roster for the Olympic tournament.
Williams, who was originally listed as an alternate, will be replaced on the alternate list by Emily Sams. The 25-year-old defender earned her first cap in June as a training player, and will now depart for the Paris Games with the U.S. roster.
Macario, meanwhile, will work through rehabilitation as she looks to get back to her best.