Abstract: A fixation device for fractured bones includes a pair of spaced arcuate supports having square or rectangular cross sections. Each of the supports is embraced by a plurality of first U-shaped holders and a plurality of second U-shaped holders, and the holders can be releasably clamped at selected positions along the supports. The first holders carry pivotable and rotatable guides, and the guides are provided with passages which receive wires to be anchored in a bone. The wires are threaded throughout their lengths and the free ends of the wires project outwardly of the guides and are provided with tensioning nuts. Additional nuts for holding the wires in position may be disposed on the central portions of the wires. Each of the second holders of one support is connected to a respective second holder of the other support by way of a strut.