Comfy™ Spring-Loaded Goniometer Elbow/Knee Orthosis Similar to the Goniometer Elbow-Knee, with a spring that gently pushes the extremity to the selected degree of extension. Position is set using Allen wrench stored in the frame of the orthotic. Both styles are ambidextrous and easy to use. Frame and cuffs are fully adjustable for a custom fit. Elbow Pad (included) slides over the center strap to protect elbow.