Abstract: A leg support device for assisting the muscles of the leg used to straighten the leg. The leg support device includes a pair of coupling members for positioning around a leg. A first of the coupling members is positionable on the leg above the knee and a second of the coupling members is positionable below the knee. A pair of biasing members biases the first coupling member away from the second coupling member. Each of the biasing members is securely attached to and extends between one of the first and second coupling members such that each of the biasing members is positioned adjacent to one of the lateral sides of the leg when the coupling members are positioned on the leg.