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ID 111433
Title Alternative
発育性股関節形成不全への人工股関節置換術における寛骨臼コンポーネント設置に対するCT-basedナビゲーションシステムの有効性
Author
Takasago, Tomoya Tokushima University
Keywords
acetabulum
arthroplasty
hip dislocation
hip joint
osteoarthritis
Content Type
Thesis or Dissertation
Description
Purpose: Developmental dysplasia of the hip (DDH) presents a considerable surgical challenge in total hip arthroplasty (THA). Although the usefulness of computed tomography (CT)-based navigation in cup alignment has been reported, few reports have evaluated three-dimensional (3-D) cup positioning against the acetabulum specifically in patients with DDH. The purpose of this study was to evaluate the efficacy of a CT-based navigation system for alignment and spatial positioning of the cup in THA for patients with DDH. Methods: We reviewed 174 DDH THA cases in which CT-based navigation was used, and 75 cases in which a mechanical guide was used as a control group. Postoperative cup alignment and spatial positioning were evaluated by superimposition of a 3-D cup template onto the actual implanted cup using postoperative CT images, with pelvic coordinates matching the preoperative planning. Results: The proportion within the combined target zone (inclination and anteversion) was 97.7% in the navigation group and 61.3% in the non-navigation group. The mean absolute error between the intraoperative record and the postoperative measurement was 1.5° ± 1.3° for inclination and 2.1° ± 1.8° for anteversion in the navigation group. For acetabular cup positioning, the mean discrepancy between the preoperative planning and the postoperative measurements was 1.9+1.6 mm on the transverse axis, 2.8 ± 2.3 mm on the longitudinal axis, and 1.7 ± 1.3 mm on the sagittal axis. Conclusion: THA using a CT-based navigation system achieved quite high accuracy of cup alignment angles and spatial cup positioning in primary THA for patients with DDH.
Journal Title
Journal of Orthopaedic Surgery
ISSN
23094990
Publisher
Sage
Volume
25
Issue
3
Start Page
1
End Page
7
Published Date
2017-08-29
Remark
内容要旨・審査要旨・論文本文の公開
本論文は, 著者Takahiko Tsutsuiの学位論文として提出され, 学位審査・授与の対象となっている。
Rights
© The Author(s) 2017 This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 3.0 License (http://www.creativecommons.org/licenses/by-nc/3.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
ETD
MEXT report number
甲第3127号
Diploma Number
甲医第1361号
Granted Date
2018-03-23
Degree Name
Doctor of Medical Science
Grantor
Tokushima University
departments
University Hospital
Medical Sciences