An orthotic device includes a frame having a first shell defining front and rear surfaces, and extending longitudinally into the anterior and posterior sides of the brace. A tightening mechanism is mounted onto the first shell, and has a ratchet strap located along the rear surface of the first shell and a ratchet device mounted on the front surface of the first shell. An elongate tensioning device having a first end portion is connected to the ratchet strap.