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 endoprosthetic tibial component, using an oscillating and a semirotating saw, were studied. Dental imprint material was used. The imprints were measured by a Zeiss UMC 850 to define the characteristics of the cut surface. The surface was smoother using the semirotating saw than the oscillating saw, with a mean maximum roughness of 1.46 mm and 2.36 mm, respectively. The corresponding flatnesses were 0.26 mm and 0.49 mm. The primary cut surface could not be improved during second cutting trials, which showed the importance of first correctly sawing in joint replacement surgery.