Source: Journal of Hand Surgery
Fourteen fresh-frozen cadaveric human forearms were randomly assigned to 1 of 2 groups. Group I (n = 7) underwent USO according to the traditional AO plate fixation technique using a screw placed eccentrically in an oblong hole to generate compression at the osteotomy site. Group II (n = 7) underwent USO with a commercially available USO plating system using a clamp placed perpendicular to the osteotomy site to generate compression. Both techniques involved a 2-mm resection osteotomy performed with cutting jigs to minimize variability and an interfragmentary lag screw to augment compression.