To provide a bone extender to be attached to a unilateral type external fixator.SOLUTION: A bone extender 30 is attached to a unilateral type external fixation device, the rotation prevention screw member 34 is released, and the coupling member 33 is manually rotated, whereby the right screw member 31 and the left screw member 32 Slide evenly in the opposite direction, separate the bone segment divided into two, and extend the bone.(FIG.【課題】 ユニラテラール型創外固定器に装着する骨延長器を提供する。【解決手段】ユニラテラール型創外固定器に骨延長器30を装着し、回転防止用ネジ部材34を解除し、連結部材33を手動で回転させることで、右ネジ部材31と左ネジ部材32を反対方向に均等にスライド移動させ、二つに分割された骨分節を引き離し、骨延長する。【選択図】図2
