Accuracy of acetabular cup insertion in an anterolateral supine approach using an accelerometer-based portable navigation system

The purpose of this study was to determine the accuracy of acetabular cup insertion during total hip arthroplasty (THA) in a supine position using an accelerometer-based portable navigation system. A single-surgeon study was conducted in which 62 prospective patients with navigation and 42 retrospec...

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Veröffentlicht in:Journal of artificial organs 2021-03, Vol.24 (1), p.82-89
Hauptverfasser: Hasegawa, Masahiro, Naito, Yohei, Tone, Shine, Wakabayashi, Hiroki, Sudo, Akihiro
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container_end_page 89
container_issue 1
container_start_page 82
container_title Journal of artificial organs
container_volume 24
creator Hasegawa, Masahiro
Naito, Yohei
Tone, Shine
Wakabayashi, Hiroki
Sudo, Akihiro
description The purpose of this study was to determine the accuracy of acetabular cup insertion during total hip arthroplasty (THA) in a supine position using an accelerometer-based portable navigation system. A single-surgeon study was conducted in which 62 prospective patients with navigation and 42 retrospective patients without navigation as historical controls were compared. The patients underwent THA via an anterolateral supine approach. The absolute values of errors of radiographic inclination and anteversion were calculated. The navigation error was also calculated. The factors that affected the absolute values of errors of cup alignment were determined. The mean absolute error of the postoperative CT measurement from the target angle for radiographic inclination was 3.8° in the navigation group and 6.6° in the control group ( P  
doi_str_mv 10.1007/s10047-020-01206-8
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A single-surgeon study was conducted in which 62 prospective patients with navigation and 42 retrospective patients without navigation as historical controls were compared. The patients underwent THA via an anterolateral supine approach. The absolute values of errors of radiographic inclination and anteversion were calculated. The navigation error was also calculated. The factors that affected the absolute values of errors of cup alignment were determined. The mean absolute error of the postoperative CT measurement from the target angle for radiographic inclination was 3.8° in the navigation group and 6.6° in the control group ( P  &lt; 0.001). The mean absolute error for anteversion was 3.3° in the navigation group and 5.9° in the control group ( P  &lt; 0.001). The mean absolute values of navigation error were 3.7° ± 2.8° in inclination and 3.0° ± 2.6° in anteversion. Changes in the pelvic tilt angle among preoperative, intraoperative, and postoperative were the significant risk factors for the absolute values of navigation error of anteversion relative to the anterior pelvic plane. Other factors affecting the absolute values of errors in the navigation group were not found for radiographic inclination and anteversion. The portable navigation system significantly improved the accuracy of cup inclination and anteversion. 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Changes in the pelvic tilt angle among preoperative, intraoperative, and postoperative were the significant risk factors for the absolute values of navigation error of anteversion relative to the anterior pelvic plane. Other factors affecting the absolute values of errors in the navigation group were not found for radiographic inclination and anteversion. The portable navigation system significantly improved the accuracy of cup inclination and anteversion. 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Changes in the pelvic tilt angle among preoperative, intraoperative, and postoperative were the significant risk factors for the absolute values of navigation error of anteversion relative to the anterior pelvic plane. Other factors affecting the absolute values of errors in the navigation group were not found for radiographic inclination and anteversion. The portable navigation system significantly improved the accuracy of cup inclination and anteversion. Changes in the pelvic tilt were the risk factors for the error of anteversion relative to the anterior pelvic plane.</abstract><cop>Tokyo</cop><pub>Springer Japan</pub><pmid>32880017</pmid><doi>10.1007/s10047-020-01206-8</doi><tpages>8</tpages></addata></record>
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subjects Accelerometers
Accuracy
Acetabular components
Acetabulum
Attitude (inclination)
Biomedical Engineering and Bioengineering
Biomedical materials
Cardiac Surgery
Error analysis
Inclination
Insertion
Mathematical analysis
Medicine
Medicine & Public Health
Navigation systems
Nephrology
Original Article
Portability
Risk analysis
Risk factors
Supine position
Surgical implants
Total hip arthroplasty
title Accuracy of acetabular cup insertion in an anterolateral supine approach using an accelerometer-based portable navigation system
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