Abstract: An improved bi-axial hinged orthotic device for use in knee braces, stabilizers, modified cast and fracture braces that allows movement of the leg and knee, providing lateral support, protection and rotational stability of a knee-joint and ligaments consisting essentially of a three-segment double hinged single side brace employed in a paired configuration; said brace having a rigid support bar or rod positioned opposite the knee-joint; index blocks positioned on the support bar coact with one end of the upper flex bar and at the other end with a lower flex bar; the upper flex bar secured to a first attachment anchor and the lower flange secured to a second attachment anchor; each attachment anchor can be used for securely embedding in casting material one end over the thigh and one end over the lower leg or calf; said double hinged brace modified with index blocks for limiting flexion and extension of the knee joint and leg.