Vaginal splints and methods for their use for treating various pelvic floor conditions are provided. One embodiment of the vaginal splint includes a base portion having a configuration defined by first and second sides, a first connecting portion at a proximal side of the base portion and extending between a first end of each of the first and second sides, and a second connecting portion at a distal side of the base portion and extending between a second end of each of the first and second sides. The splint further includes an adjustable portion coupled to the base portion and positioned substantially adjacent to and distal of the second connecting portion of the base portion. The adjustable portion is removable by a user to thereby change the size of the splint.