A blade (130, 130a, 230) for use with a sagittal surgical saw (50, 202), said blade including: a body (132, 132a, 134, 232) with opposed proximal and distal ends and opposed faces; teeth (136, 234) for cutting tissue, the teeth extending forward from the distal end of the body; and a void space (144, 186, 244) formed in the body adjacent the proximal end of the body that extends between the opposed faces, characterized in that the void space is defined by: an opening (142, 184, 242) that extends inwardly from a first one of the faces of the blade body, the opening at least partially defined by a surface (141, 182, 240) that tapers inwardly from the first face of the blade body so as to have a maximum diameter adjacent the first face of the blade body; and a through bore (144, 186, 244) that extends from the end of the opening (142, 184, 242) spaced from the first face to the second face of the blade body, the blade body being formed so that the through bore has a shape that is not circular and is further formed to define a major axis across the through bore and at least one minor axis across the through bore, the major axis being longer in length than the at least one minor axis and shorter in length than a maximum distance across the portion of the opening adjacent the first face. a body (132, 132a, 134, 232) with opposed proximal and distal ends and opposed faces; teeth (136, 234) for cutting tissue, the teeth extending forward from the distal end of the body; and a void space (144, 186, 244) formed in the body adjacent the proximal end of the body that extends between the opposed faces, characterized in that the void space is defined by: an opening (142, 184, 242) that extends inwardly from a first one of the faces of the blade body, the opening at least partially defined by a surface (141, 182, 240) that tapers inwardly from the first face of the blade body so as to have a maximum diameter adjacent the first face of the blade body; and a through bore (144, 186, 244) that extends from the end of the opening (142, 184, 242) spaced from the first face to the second face of the blade body, the blade body being formed so that the through bore has a shape that is not circular and is further formed to define a major axis across the through bore and at least one minor axis across the through bore, the major axis being longer in length than the at least one minor axis and shorter in length than a maximum distance across the portion of the opening adjacent the first face. an opening (142, 184, 242) that extends inwardly from a first one of the faces of the blade body, the opening at least partially defined by a surface (141, 182, 240) that tapers inwardly from the first face of the blade body so as to have a maximum diameter adjacent the first face of the blade body; and a through bore (144, 186, 244) that extends from the end of the opening (142, 184, 242) spaced from the first face to the second face of the blade body, the blade body being formed so that the through bore has a shape that is not circular and is further formed to define a major axis across the through bore and at least one minor axis across the through bore, the major axis being longer in length than the at least one minor axis and shorter in length than a maximum distance across the portion of the opening adjacent the first face.