Brittany Mahomes has been privately navigating a wrist injury. "[Here's] my workout yesterday before I decided to finally go to the doctor about my wrist," Mahomes, 30, wrote via her Instagram Stories on Tuesday, May 5, sharing her glute and hamstring gym routine. In a follow-up slide, Mahomes revealed that she was diagnosed with De Quervain tenosynovitis. "To find out I have this," she wrote. "Been battling it for probably around a year now, thinking it will just get better. Well, it never did and started to get pretty bad.