ID | 59965 |
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Author |
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
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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.
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Keywords | Hip
Navigation system
Total hip replacement
Retrospective study
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Published Date | 2020-04-15
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Publication Title |
Journal of Orthopaedic Surgery and Research
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Volume | volume15
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Issue | issue1
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Publisher | BMC
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Start Page | 147
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ISSN | 1749-799X
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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PubMed ID | |
DOI | |
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Related Url | isVersionOf https://doi.org/10.1186/s13018-020-01673-y
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License | http://creativecommons.org/licenses/by/4.0/
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