US Patent 6,152,925
United States Patent and Trademark Office
University of Iowa Research Foundation (Iowa City, IA, US) ; Electro-Biology, Inc. (Parsippany, NJ)
An apparatus for adjustably securing the humerous, which is on a proximal side of elbow joint, relative to the ulna on the distal side of the elbow joint. The apparatus includes a central body having inner and outer ring members interconnected for relative rotation about a common mechanical axis adapted to align with the anatomical axis of the elbow joint. The central body defines a radiographic window for permitting lateral radiographic examination of the anatomical pivot axis of the elbow joint. The apparatus preferably includes a distraction mechanism for distracting the humerus perpendicular to the proximal end of the ulna.
Marsh, Lawrence J.; Walulik, Stephen B.; Bottlang, Michael; and Steyers, Curtis M. Method and apparatus for external fixation of an elbow. US Patent 6,152,925 filed March 04, 1998 and issued November 28, 2000. https://ir.uiowa.edu/patents/248