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Advances in Orthopedics
Volume 2013, Article ID 194683, 5 pages
Research Article

Protocol for Evaluation of Robotic Technology in Orthopedic Surgery

MSk Lab, Charing Cross Hospital, Imperial College London, London W6 8RF, UK

Received 25 October 2012; Accepted 25 August 2013

Academic Editor: Jess H. Lonner

Copyright © 2013 Milad Masjedi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In recent years, robots have become commonplace in surgical procedures due to their high accuracy and repeatability. The Acrobot Sculptor is an example of such a robot that can assist with unicompartmental knee replacement. In this study, we aim to evaluate the accuracy of the robot (software and hardware) in a clinical setting. We looked at (1) segmentation by comparing the segmented data from Sculptor software to other commercial software, (2) registration by checking the inter- and intraobserver repeatability of selecting set points, and finally (3) sculpting ( cases) by evaluating the achieved implant position and orientation relative to that planned. The results from segmentation and registration were found to be accurate. The highest error was observed in flexion extension orientation of femoral implant ( °). Mean compound rotational and translational errors for both components were  mm and ° for tibia and  mm and ° for the femur. The results from all processes used in Acrobot were small. Validation of robot in clinical settings is highly vital to ensure a good outcome for patients. It is therefore recommended to follow the protocol used here on other available similar products.