Abstract: Disclosed is a device for maintaining extension of the knee joints of comatose, debilitated or bedridden patients. The device generally includes one or more elongate struts positionable adjacent the knee and having a bendable hinge formed therein to permit volitional bending of the knee. Such hinge is biased to an extended position so as to hold the knee in such extended position when not volitionally bent. An upper leg engaging member serves to anchor the upper ends of the elongate strut members to the leg, above the knee. A lower leg engaging member serves to anchor the lower ends of the strut members to the lower leg, below the knee. The lower leg engaging member may comprise a foot and ankle splint device which extends beneath the plantar surface of the foot, and which is attachable to the foot, thereby serving to prevent upward or downward movement of the device and further thereby limiting the need for tightening the device around the upper and/or lower leg of the patient.