An intramedullary fixation system is configured to be fixed to first and second bone segments that are separated by a defect. The system includes an intramedullary fixation member that includes first and second wire segments that are twisted about each other so as to define a plurality of intersections. A distal one of the intersections is separable, such that rotation of the fixation device in a medullary canal causes bone material in the medullary canal to apply a counterforce to the wire segments that causes the distal intersection to separate, thereby driving respective distal ends of the wire segments into the bone segment, such that subsequent movement of the intramedullary fixation member a toward the first bone segment causes the second bone segment to move toward the first bone segment. The intramedullary fixation system can further include a fixation clip that anchors the intramedullary fixation member to the first bone segment.一種髓內固定系統經組態用以被固定至第一及第二骨段，該等第一及第二骨段係藉由一缺陷而分開。該系統包含一髓內固定部件，該髓內固定部件包含第一及第二線材段，該等第一及第二線材段彼此絞繞以界定複數個交叉點。該等交叉點之一末梢端者為可分開，使得該固定器件於一髓管中之旋轉造成該髓管中之骨物質施加一反作用力至該等線材段而造成該末梢端交叉點分開，藉此驅動該等線材段之各自末梢端至該骨段中，使得後續移動髓內固定部件朝向該第一骨段，造成該第二骨段移動朝向該第一骨段。該髓內固定系統可進一步包含一固定夾件，該固定夾件錨固該髓內固定部件至該第一骨段。
