Advantages of patient-specific cutting guides with disposable instrumentation in total knee arthroplasty: a case control study.

Background: Total knee arthroplasty (TKA) is most frequently planned using conventional two-dimensional weight-bearing lower limb radiographs and is performed with conventional femoral and tibial cutting guides. Questions have been raised about the accuracy of conventional TKA instrumentation and planning for an anatomically standard or complex joint. Use of computed tomography (CT)-based three-dimensional (3D) templating and patient-specific cutting guides printed in 3D has shown improved postoperative lower limb alignment parameters.

[Single use custom made instrumentation, the future of total knee arthroplasty?].

It is expected that the number of total knee arthroplasties should be multiplied by 7 in twenty years. Until now, this procedure required a large number of surgical trays. Three-dimensional preoperative planning, persona-lized cutting guides, and disposable instrumentation kits can now help to optimize this procedure by providing a unique single-use surgical kit per patient.