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ID 59965
フルテキストURL
著者
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 researchmap
抄録
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.
キーワード
Hip
Navigation system
Total hip replacement
Retrospective study
発行日
2020-04-15
出版物タイトル
Journal of Orthopaedic Surgery and Research
15巻
1号
出版者
BMC
開始ページ
147
ISSN
1749-799X
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
PubMed ID
Web of Science KeyUT
関連URL
isVersionOf https://doi.org/10.1186/s13018-020-01673-y
ライセンス
http://creativecommons.org/licenses/by/4.0/