Heffernan Michael J, Leclair Walter, Li Xinning
Division of Orthopaedic Surgery, University of Massachusetts Medical Center, Worcester, Massachusetts, USA.
Orthopedics. 2012 Mar 7;35(3):e438-41. doi: 10.3928/01477447-20120222-32.
Locked intramedullary nailing is the current standard of treatment for femoral shaft fractures and has low complication rates. Bent femoral intramedullary nails resulting from secondary trauma are rare and technically challenging. This article describes a case of a 36-year-old man who presented with a bent femoral intramedullary nail following a motorcross accident. The patient had a previous femoral shaft fracture treated with an intramedullary nail. Previous reports outlined methods to remove bent femoral nails through the fracture site and proximally; however, this article describes a novel technique combining the use of a Midas Rex MR7 high-speed burr (Medtronic, Minneapolis, Minnesota) and the F-Tool (Synthes, West Chester, Pennsylvania) to facilitate nail extraction.The patient was placed in the lateral decubitus position. After limited exposure at the fracture site, the intramedullary nail was weakened at the apex of the deformity with a Midas Rex MR7 high-speed burr. We then used the F-Tool to straighten the nail to facilitate removal through the original proximal insertion site. The F-Tool allows forces to be concentrated at the apex of the deformity and minimizes soft tissue damage. Additional advantages of our technique include limited exposure and the ability to remove the nail in 1 piece.
锁定髓内钉固定术是目前股骨干骨折的标准治疗方法,并发症发生率低。继发创伤导致的股骨髓内钉弯曲罕见且技术上具有挑战性。本文描述了一例36岁男性,在一场摩托车越野事故后出现股骨髓内钉弯曲。该患者既往股骨干骨折采用髓内钉治疗。既往报道概述了通过骨折部位和近端取出弯曲股骨钉的方法;然而,本文描述了一种结合使用美敦力(Medtronic,明尼阿波利斯,明尼苏达州)的Midas Rex MR7高速磨钻和F-Tool(辛迪斯,西切斯特,宾夕法尼亚州)以利于取出髓内钉的新技术。患者置于侧卧位。在骨折部位有限暴露后,用Midas Rex MR7高速磨钻在畸形顶点处削弱髓内钉。然后我们使用F-Tool将髓内钉拉直,以便通过原来的近端插入部位取出。F-Tool可使力量集中在畸形顶点,并将软组织损伤降至最低。我们这项技术的其他优点包括暴露有限以及能够完整取出髓内钉。