A novel computer-assisted surgical technique for revision total knee arthroplasty.

Revision total knee arthroplasty (RTKA) is a skill-demanding intervention presenting several technical challenges to the surgeon due to bone deficiencies and lack of anatomical references. Computer-assisted navigation systems can potentially solve these problems. An innovative computer-assisted surgical technique for RTKA is presented.

In vivo evaluation of a computer planning system for total knee arthroplasty.

In this paper we report the analysis of a preoperative computer planner for total knee arthroplasty (TKA), when applied to a set of patients by different surgeons. The goal of this work was to study the repeatability and reliability of computer planning, the ergonomy of the system, identify the useful features of this technique and the possible drawbacks. The planning system allows the surgeon to interactively stimulate the implant on a 3D model of the patient computed from computerized tomography (CT) images.

Criteria of interface evaluation for computer assisted surgery systems.

Objectives: The evaluation of computer assisted surgery (CAS) systems in terms of clinical outcomes and ergonomic features is more and more relevant. The goal of this paper is to provide criteria to define effective evaluation protocols of HCI for CAS systems.

Method: The proposed criteria include the use of two questionnaires prepared by the authors, aimed at analyzing the subjective feeling of the surgeons in using the system's tools, and objective aspects of the system.