A blade assembly for use with a surgical saw having a drive assembly, the blade assembly comprising: a guide bar assembly (110, 212, 262, 362) comprising a pair of elongate and flat outer bars (116, 120, 218, 222), and an elongate and flat inner bar (118, 220) disposed between said flat outer bars (116, 120, 218, 222), each of said bars having a distal end, said guide bar assembly extending from the surgical saw and terminating at a distally directed face spaced from the surgical saw; a saw blade (112, 214, 288, 306, 330, 350, 366) movably attached to said guide bar assembly, said saw blade (112, 214, 288, 306, 330, 350, 366) having a base (162, 162, 238, 290, 368) and a head (166, 166, 240, 294, 332, 372), said head including teeth (168, 295, 308, 334, 373) which extend outwardly beyond said guide bar assembly (110, 212, 262, 362) and said distally directed face, and said saw blade (112, 214, 288, 306, 330, 350, 366) having a thickness dimension defined transversely to the elongated direction of said guide bar assembly, said thickness dimension equal to or greater than the thickness of the guide bar assembly; and a connecting member (114, 216, 296, 312, 344, 378) having a first end configured to connect to the drive assembly of the surgical saw and a second end connected to said saw blade (112, 214, 288, 306, 330, 350, 366); wherein said connecting member (114, 216, 296, 312, 344, 378) is configured so that actuation of the drive assembly results in a reciprocation of said connecting member (114, 216, 296, 312, 344, 378) to displace said saw blade (112, 214, 288, 306, 330, 350, 366) so that said teeth (168, 295, 308, 334, 373) oscillate back and forth across said distally directed face of said guide bar assembly, and wherein said distal end of said flat inner bar (118, 220) is recessed proximally relative to said distal ends of said outer bars (116, 120, 218, 222) so as to define a receiving space for the base between the distal ends of said outer bars which opens forwardly, said distal ends of said outer bars together defining the guide bar distally-directed face. a guide bar assembly (110, 212, 262, 362) comprising a pair of elongate and flat outer bars (116, 120, 218, 222), and an elongate and flat inner bar (118, 220) disposed between said flat outer bars (116, 120, 218, 222), each of said bars having a distal end, said guide bar assembly extending from the surgical saw and terminating at a distally directed face spaced from the surgical saw; a saw blade (112, 214, 288, 306, 330, 350, 366) movably attached to said guide bar assembly, said saw blade (112, 214, 288, 306, 330, 350, 366) having a base (162, 162, 238, 290, 368) and a head (166, 166, 240, 294, 332, 372), said head including teeth (168, 295, 308, 334, 373) which extend outwardly beyond said guide bar assembly (110, 212, 262, 362) and said distally directed face, and said saw blade (112, 214, 288, 306, 330, 350, 366) having a thickness dimension defined transversely to the elongated direction of said guide bar assembly, said thickness dimension equal to or greater than the thickness of the guide bar assembly; and a connecting member (114, 216, 296, 312, 344, 378) having a first end configured to connect to the drive assembly of the surgical saw and a second end connected to said saw blade (112, 214, 288, 306, 330, 350, 366); wherein said connecting member (114, 216, 296, 312, 344, 378) is configured so that actuation of the drive assembly results in a reciprocation of said connecting member (114, 216, 296, 312, 344, 378) to displace said saw blade (112, 214, 288, 306, 330, 350, 366) so that said teeth (168, 295, 308, 334, 373) oscillate back and forth across said distally directed face of said guide bar assembly, and wherein said distal end of said flat inner bar (118, 220) is recessed proximally relative to said distal ends of said outer bars (116, 120, 218, 222) so as to define a receiving space for the base between the distal ends of said outer bars which opens forwardly, said distal ends of said outer bars together defining the guide bar distally-directed face.