Donjoy X-ROM Post-Op Knee BraceX ROM Post Op Knee Brace X Rom COME BACK STRONG. The Donjoy X Rom is an easy to use post op knee brace offers fast, simple application and adjustment through innovative strap, tab and buckle designs. The user friendly X ROM helps control and protect ROM with a quick lock design and hinge pull out stops. With four independently telescoping sliders and the ability to contour to the patients leg to aid varus and valgus support, the X ROM comfortably