The device and method for being treated preparation what inside bone with what. The treatment may include the treatment fractured with what. Described device and method can be related to orienting surgical instrument with the correct deployment with what inside the bone. Utensil guide part can be positioned as and remain resisting the translation along one or more of three substantially orthogonal Zhou Line and resisting the rotation around one or more of three substantially orthogonal Zhou Line. The device for being arranged in the outside of the bone can make the guide part and the inside of bone described in the what of position, the specified region alignment for being prepared or being treated with what. One or more broaching component can be used to treat the region preparation with what. Broach component can be flexible so that its broaching with the bone compared with low-density and its bone with higher density kept intact.用於將骨內部準備用於治療的裝置及方法。所述治療可以包括用於骨折的治療。所述裝置及方法可以涉及將手術器具定向以用於在所述骨內部的正確部署。器具導向件可以定位爲且保持爲抵抗沿著三個基本正交軸綫中的一個或多個的平移並且抵抗繞三個基本正交軸綫中的一個或多個的旋轉。布置在所述骨的外部的裝置可以使所述導向件與位於所述骨的內側的、指定用於準備或治療的區域對齊。一個或多個拉削構件可以用來使所述區域準備用於治療。拉削構件可以爲柔性的,使得其拉削具有較低密度的骨並且其將具有較高密度的骨保持原樣。