Tynor PF Night Splint Derotation is designed for rehabilitation after injury, fracture, sprains or surgery of the foot, ankle or lower leg to prevent plantar flexion when required. The rigid casing provides support to lift the ankle, constraining the plantar flexion, enabling prevention of conditions like foot drop or contractures on prolonged bed rest. The Derotation Bar can be used for prevention of rotation post femur fracture. So go ahead and buy this product online today!