The straight leg raise (SLR) exercise is a common exercise which is used in the early to mid stages of rehabilitation for knee, hip and thigh injuries. It works the hip flexor muscles.
- The starting point is lying on the back with both legs out straight.
- One leg is then lifted a few inches off the couch/floor, keeping the knee straight.
- The position may be held for 2-5 seconds, before the leg is lowered slowly back to the floor.