A kind of rotating bone nail for orthopaedics comprising: one holds portions, and one end is fixing end, and the other end is connecting end, which is equipped with a connecting slot； And a screw, one end are that nail is dry, the other end is connecting member, in conjunction with wherein the connecting member holds the connecting slot of portions with this； Its characteristic exists: the connecting member and connecting slot are substantially combined using single-shaft-rotation mechanism in the preoperative, and holding this, portions what is preoperative can only substantially to be rotated according to the axis that the nail is done.一種骨科用旋轉骨釘，其包括：一承座部，其一端為固定端，另一端為連結端，該連結端設有一連結槽；及一螺釘，其一端為釘幹，另一端為連結部件，其中該連結部件與該承座部的連結槽結合；其特徵在：該連結部件和連結槽在術前實質上利用單軸旋轉機制結合，使該承座部於術前實質上只能依該釘幹的軸進行旋轉。
