A brace configured to restrict a range of motion of a joint of a subject, the brace comprising an upper support arm, a lower support arm, and a hinge assembly comprising an upper hinge plate coupled to the upper support arm and a first spacing element extending from an outward facing surface of the upper hinge plate, a lower hinge plate coupled to the lower support arm and comprising an aperture configured to receive an axle, the first spacing element of the upper hinge plate passing through the aperture, the axle, rotatably coupling the upper hinge plate and the lower hinge plate, a hinge cover, and a locking element disposed on the upper hinge plate, the locking element configured to selectively either allow or prohibit rotation of the upper support arm with respect to the lower support arm.