IMPROVED BONE CUTTING USING A SEMIROTATING SAW - A CADAVER STUDY OF THE CUT SURFACE ON TIBIAL CONDYLES

Cut surfaces on cadaver tibial bones prepared to receive an endoprosth etic tibial component, using an oscillating and a semirotating saw, we re studied. Dental imprint material was used. The imprints were measur ed by a Zeiss UMC 850 to define the characteristics of the cut surface . The surface was smoother using the semirotating saw than the oscilla ting saw, with a mean maximum roughness of 1.46 mm and 2.36 mm, respec tively. The corresponding flatnesses were 0.26 mm and 0.49 mm. The pri mary cut surface could not be improved during second cutting trials, w hich showed the importance of first correctly sawing in joint replacem ent surgery.