Unilateral AFO reaches proximally over the condyles of the femur thus stabilising the knee joint medio-laterally. The range of motion in the ankle joint can be chosen by interchangeable ROM stops. The bars and the joints are made of aluminium, stainless steel or titanium. The brace is laminated on a custom made mold out of carbon fibre, glass fibre and nylon. Unilateral AFO aids straightening of the knee because of impaired muscle function of plantar flexors.