J Korean Orthop Res Soc.  2002 Oct;5(2):110-117.

Development of an Intra-operative Navigation System Using an Optical Tracking System

• Yeom JS
• Kim HY
• Choy WS
• Kim WJ
• Kim YH
• Kim HM
• Seo DH
• Lee S
• Lee JB
• Kim NK
• Kim CY

Abstract

PURPOSE: The purposes of this study were to develop an intraoperative navigation system as the first step toward image-guided surgery and robotic surgery, and to evaluate its accuracy.
MATERIALS AND METHODS
The navigation system was composed of an optical tracking system (Polaris, Northern Digital) and a personal computer. The registration error and target localization error of fiducial registration and surface registration were measured using a phantom. Each of the errors was measured 30 times, and the average values and the standard deviations were calculated.
RESULTS
The registration error was 0.84 +/- 0.28 mm at fiducial registration and 0.81 +/- 0.21 mm at surface registration. The target localization error was 1.54 +/- 0.34 mm at fiducial registration and 1.46 +/- 0.32 mm at surface registration.
CONCLUSION
We have developed an intraoperative navigation system using an optical tracker, and could assure ourselves that its accuracy is adequate for many orthopaedic surgeries. However, it still requires improvement in the accuracy and development of specific software and instruments for various operations.

Keyword

Intraoperative navigation system; Optical tracking system; Accuracy; Error

MeSH Terms

Microcomputers
Surgery, Computer-Assisted