By Brendan O’Brien and Amy Tennery (Reuters) -U.S. basketball star Brittney Griner, who on Friday left an Army medical center where she had been recuperating following her release from a Russian penal colony as part of a prisoner swap, said she would work to help bring other detained Americans home and planned to resume her WNBA career. Griner, a two-time Olympic gold medalist and eight-time Women’s National Basketball Association (WNBA) All-Star, left the Brooke Army Medical Center a week after she arrived at Fort Sam Houston in Texas, CNN reported. “The last 10 months have been a battle at e…