J Korean Fract Soc.  2005 Apr;18(2):191-197. 10.12671/jkfs.2005.18.2.191.

Development and Accuracy Test of a Robot-arm Type Image-guided Surgery System for Percutaneous Screw Fixation of the Sacro-iliac Joint

• Yeom JS
• Choy WS
• Kim H
• Kang JW
• Lee KW
• Kim WJ
• Ahn JH
• Park SK
• Won JH
• Kim H
• Kim N

• KMID: 2035989
• DOI: http://doi.org/10.12671/jkfs.2005.18.2.191

Abstract

PURPOSE: To develop a robot-arm type image-guided surgery system for percuatneous screw fixation of the sacro-iliac joint and to evaluate its accuracy.
MATERIALS AND METHODS
We have developed an image-guided surgery system using a three-dimensional digitizer (Microscribe 3-D G2, Immersion, USA) and a personal computer. The registration error and target localization error at fiducial registration were measured 30 times for each using a phantom made with plastic pelvic bone model (Sawbones, USA). Sixteen 6.5 mm cannulated screws were inserted into four plastic bone models, and the accuracy was evaluated.
RESULTS
The target localization error was 1.46+/-0.47 mm while the registration error was 0.73+/-0.23 mm. All of the 16 screws were inserted well across the sacro-iliac joint, and there was neither cortical breach nor collision between screws or washers.
CONCLUSION
The accuracy of the developed system was similar to that of optical tracker-based navigation systems, and its helpfulness and usefulness was proven with simulation surgery using plastic bone models.

Keyword

Sacro-iliac joint; Separation; Screw fixation; Image-guided surgery system; Intraoperative navigation system

MeSH Terms

Immersion
Joints*
Microcomputers
Pelvic Bones
Plastics
Surgery, Computer-Assisted*
Plastics