Suppr超能文献

取出固定良好的股骨柄。

Removal of well-fixed fixed femoral stems.

作者信息

Laffosse J-M

机构信息

Département de chirurgie orthopédique, traumatologique et reconstructrice, hôpital Pierre-Paul-Riquet, place du Docteur-Baylac, TSA 40031, 31059 Toulouse cedex 9, France.

出版信息

Orthop Traumatol Surg Res. 2016 Feb;102(1 Suppl):S177-87. doi: 10.1016/j.otsr.2015.06.029. Epub 2016 Jan 18.

Abstract

The removal of a well-fixed prosthetic stem raises technical challenges. The objective is not only to remove the material, but also to prepare the implantation of a new prosthesis. Cemented stems are only very rarely unremovable; extraction of the cement mantle and plug raises the greatest difficulties. The main risk is cortex perforation, and a radiograph should be obtained at the slightest doubt. The removal of cementless stems carries a higher risk of fracture. Difficulties should be anticipated based on thorough familiarity with the implant design and on evaluations of implant fixation and bone stock. The intramedullary approach is usually sufficient to extract a cemented or cementless, well fixed, standard stem. Routine use of a transfemoral approach is warranted only in the following situations: revision surgery for infection, S-shaped stem, long stem, curvature or angulation of the femoral shaft, or unfeasible hip dislocation. However, the possibility that the intramedullary approach may need to be converted to a transfemoral approach should be anticipated. Thus, preoperative planning must include determination of the optimal length of a femoral osteotomy or femoral flap, should one be needed, and the surgeon must have access to all the revision implants and tools that might be needed for re-implantation. Experience with the various techniques is indispensable, as a well-performed extensive approach is associated with less morbidity than a fracture or trajectory error. There are three main techniques, which are described here: intramedullary extraction of a cementless stem, intramedullary extraction of a cemented stem, and transfemoral extraction through an extended trochanterotomy. The patients should receive detailed information on the difficulties of femoral stem removal and on the available solutions.

摘要

取出固定良好的假体柄会带来技术挑战。目标不仅是取出材料,还要为植入新假体做好准备。骨水泥固定柄极少无法取出;取出骨水泥套和塞子会带来最大困难。主要风险是皮质穿孔,稍有疑问就应进行X线检查。取出非骨水泥柄骨折风险更高。应基于对植入物设计的充分了解以及对植入物固定和骨量的评估来预判困难。髓内入路通常足以取出骨水泥固定或非骨水泥固定、固定良好的标准柄。仅在以下情况才需要常规采用经股骨入路:感染翻修手术、S形柄、长柄、股骨干弯曲或成角,或髋关节脱位不可行。然而,应预见到髓内入路可能需要转换为经股骨入路的情况。因此,术前规划必须包括确定股骨截骨或股骨瓣的最佳长度(如有需要),并且外科医生必须能够获得再植入可能需要的所有翻修植入物和工具。熟悉各种技术经验必不可少,因为良好实施的广泛入路比骨折或操作路径错误的发病率更低。这里描述三种主要技术:非骨水泥柄的髓内取出、骨水泥柄的髓内取出以及通过扩大转子截骨术的经股骨取出。应向患者详细说明股骨柄取出的困难及可用解决方案。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验