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09.11.2017 | Original Article • PELVIS - TRAUMA | Ausgabe 3/2018

European Journal of Orthopaedic Surgery & Traumatology 3/2018

Accuracy of screw fixation using the O-arm® and StealthStation® navigation system for unstable pelvic ring fractures

Zeitschrift:
European Journal of Orthopaedic Surgery & Traumatology > Ausgabe 3/2018
Autoren:
Jun Takeba, Kensuke Umakoshi, Satoshi Kikuchi, Hironori Matsumoto, Suguru Annen, Naoki Moriyama, Yuki Nakabayashi, Norio Sato, Mayuki Aibiki

Abstract

Purpose

Screw fixation for unstable pelvic ring fractures is generally performed using the C-arm. However, some studies reported erroneous piercing with screws, nerve injuries, and vessel injuries. Recent studies have reported the efficacy of screw fixations using navigation systems. The purpose of this retrospective study was to investigate the accuracy of screw fixation using the O-arm® imaging system and StealthStation® navigation system for unstable pelvic ring fractures.

Methods

The participants were 10 patients with unstable pelvic ring fractures, who underwent screw fixations using the O-arm StealthStation navigation system (nine cases with iliosacral screw and one case with lateral compression screw). We investigated operation duration, bleeding during operation, the presence of complications during operation, and the presence of cortical bone perforation by the screws based on postoperative CT scan images. We also measured the difference in screw tip positions between intraoperative navigation screen shot images and postoperative CT scan images.

Results

The average operation duration was 71 min, average bleeding was 12 ml, and there were no nerve or vessel injuries during the operation. There was no cortical bone perforation by the screws. The average difference between intraoperative navigation images and postoperative CT images was 2.5 ± 0.9 mm, for all 18 screws used in this study.

Conclusion

Our results suggest that the O-arm StealthStation navigation system provides accurate screw fixation for unstable pelvic ring fractures.

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