A brace is provided including an upper support arm, a lower support arm, and a hinge assembly. The hinge assembly includes an upper hinge plate coupled to the upper support arm and including a first plurality of teeth disposed along at least a portion of a perimeter of the upper hinge plate. The hinge assembly includes a lower hinge plate coupled to the lower support arm and including a second plurality of teeth disposed along at least a portion of a perimeter of the upper hinge plate. The hinge assembly includes an axle rotatably coupling the upper and lower hinge plates. The hinge assembly includes a locking element disposed on the upper hinge plate and including first and second protrusions configured to physically contact opposite sides of one of the second plurality of teeth in a first orientation, thereby prohibiting relative rotation between the upper and lower support arms.
