Can be finely follow a determined extension gap, the alignment connecting device that can be aligned in three dimensions, the alignment of the femoral osteotomy group tibial cutting machine is disclosed. The disclosed invention is the front center of a guide groove formed in a side of the guide groove is formed in through-holes which the fixing pin inserted into the leader and the indicated state; And the high and slidably coupled to the guide groove of the government support is composed of a step to be inserted into the groove of the slider and the osteotomy femur osteotomy standard is displayed corresponding to the determined extension gap group; It characterized in that it comprises a fixing means for fixing to the high state to the support.
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