An apparatus and method for treating ulnar neuropathy are disclosed. An apparatus for treating ulnar neuropathy includes an inner face for engaging an arm with an upper end terminating above the elbow and a lower end terminating below the elbow; a plurality of mechanical fasteners along an edge of the inner face; an outer face having channels to promote circumferential flexibility; and a plurality of mechanical fasteners on the outer face positioned to oppose the plurality of mechanical fasteners on the inner face. A method of treating ulnar neuropathy includes placing an inner face in contact with the arm; wrapping the device around the arm to extend above and below the elbow; engaging mechanical fasters on the inner face with mechanical fasteners on the outer face; and tightening the device to support the elbow while allowing normal circulation in the arm.