Mulier J C, Mulier M, Brady L P, Steenhoudt H, Cauwe Y, Goossens M, Elloy M
Department of Orthopaedic Surgery, Katholieke Universiteit, Leuven, Belgium.
Clin Orthop Relat Res. 1989 Dec(249):97-112.
A system has been developed that allows the surgeon to match a prosthesis to any femoral cavity. The surgeon may choose how and where it will preferentially fit. The surgeon does not have to create a cavity to suit a premade prosthesis. The system is based on a novel technique for making a mold of the prepared femoral cavity. This is accurately and thoroughly measured using a laser. An implant is designed and manufactured while the operation is in progress using state-of-the-art computer and machining techniques. All important parameters such as neck length, offset, and anteversion are fully variable intraoperatively. To date, more than 800 consecutive procedures have been carried out. In a limited trial, no subjective difference was found with a cemented Charnley total hip arthroplasty at one year. It currently takes about 40 minutes to manufacture the implant and make it available in the operating room, and this time is being continually reduced. Using a femur first approach, operating time is not greatly extended. In the future, perhaps the operating time will not be extended at all. All data including cavity geometry are centrally recorded for analysis.
现已开发出一种系统，可让外科医生为任何股骨腔匹配假体。外科医生可以选择其优先适配的方式和位置。外科医生无需为适配预制假体而制造腔隙。该系统基于一种用于制作已准备好的股骨腔模具的新技术。使用激光对其进行精确且全面的测量。在手术进行过程中，利用最先进的计算机和加工技术设计并制造植入物。所有重要参数，如颈长、偏心距和前倾角，在术中均可完全改变。迄今为止，已连续进行了800多例手术。在一项有限的试验中，与骨水泥型Charnley全髋关节置换术相比，一年时未发现主观差异。目前制造植入物并将其提供到手术室大约需要40分钟，而且这一时间还在不断缩短。采用股骨优先入路时，手术时间不会大幅延长。未来，或许手术时间根本不会延长。包括腔隙几何形状在内的所有数据都集中记录以供分析。
