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ID 59965
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Author
Tetsunaga, Tomonori Department of Orthopaedic Surgery, Okayama University Hospital Kaken ID
Yamada, Kazuki Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Tetsunaga, Tomoko Department of Orthopaedic Surgery, Okayama University Hospital
Sanki, Tomoaki Department of Orthopaedic Surgery, Okayama University Hospital
Kawamura, Yoshi Department of Orthopaedic Surgery, Okayama University Hospital
Ozaki, Toshifumi Department of Orthopaedic Surgery, Okayama University Hospital Kaken ID publons researchmap
Abstract
Background
Inadequate acetabular component orientation is associated with postoperative impingement, dislocation, and accelerated polyethylene wear. Computed tomography (CT)-based navigation systems provide accuracy for total hip arthroplasty (THA) but are not available in all facilities. Accelerometer-based navigation systems are inexpensive, but their accuracy remains undetermined. This study compares the accuracy of cup orientation in THA using CT-based and accelerometer-based navigation systems.
Methods
This retrospective study included 35 consecutive patients (11 males, 24 females; mean age, 65 years) who underwent primary cementless THA via an anterolateral approach in the supine position. Both CT-based and accelerometer-based navigation systems were used simultaneously. The accuracy of cup orientation was compared between the two systems using postoperative CT.
Results
The accuracy of cup inclination was 2.7° ± 2.0° in the CT-based group and 3.3° ± 2.4° in the accelerometer-based group. The accuracy of cup anteversion was 2.8° ± 2.6° in the CT-based group and 3.4° ± 2.2° in the accelerometer-based group. No significant difference was observed in cup inclination (p = 0.29) or cup anteversion (p = 0.34) between CT-based and accelerometer-based navigation.
Conclusions
The accuracy of cup positioning did not differ significantly between CT-based and accelerometer-based navigation systems.
Keywords
Hip
Navigation system
Total hip replacement
Retrospective study
Published Date
2020-04-15
Publication Title
Journal of Orthopaedic Surgery and Research
Volume
volume15
Issue
issue1
Publisher
BMC
Start Page
147
ISSN
1749-799X
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
PubMed ID
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1186/s13018-020-01673-y
License
http://creativecommons.org/licenses/by/4.0/