Total knee arthroplasty. Patient-specific instruments and implants

被引:0
作者
Steinert, Andre F. [1 ]
Holzapfel, Boris M. [1 ]
Sefrin, Lukas [1 ]
Arnholdt, Joerg [1 ]
Hoberg, Maik [1 ]
Rudert, Maximilian [1 ]
机构
[1] Univ Wurzburg, Lehrstuhl Orthopadie, Orthopad Klin, Brettreichstr 11, D-97070 Wurzburg, Germany
来源
ORTHOPADE | 2016年 / 45卷 / 04期
关键词
Bone malalignment; Prosthesis fitting; Precision medicine; Computer-aided design; Osteoarthritis; ALIGNMENT; SATISFACTION; BIOMECHANICS; VARIABILITY; KINEMATICS; OUTCOMES; DESIGN; SLOPE;
D O I
10.1007/s00132-016-3246-9
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
This article describes the concept and surgical technique of patient-specific total knee arthroplasty. Patient-specific implants and instruments are designed and fabricated based on computed tomography (CT) data of the leg. The disposable patient-specific drill guides and cutting-jigs are manufactured taking into consideration the anatomical and biomechanical axes of the knee joint and mediating the efficient pre-navigation of the osseous saw-cuts, without the need for additional navigation or balancing aids. The surgical plan is made on the basis of the CT data. The implantation technique comprises the following steps: distal femoral resection, tibial resection, balancing and femur preparation, tibia preparation, optional patellar resurfacing, trialling of the test components, and implantation of the final components. By using this patient-specific implant system, which includes not only personalized, single-use instruments, but also individualized implants, the surgeon is able to provide endoprosthetic treatment that broadly restores the patient's own knee anatomy and knee kinematics. Preliminary studies have proven the concept and data on this technology are promising so far; however, like a new implant, they are usually limited. In particular, comparative long-term clinical data are still to come.
引用
收藏
页码:331 / +
页数:9
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