The stability of total talar prosthesis - How stable to dislocation? Cadaveric study （人工距骨の安定性－脱臼への耐性は如何ほどか？ カダバ研究）

• Material Type: 博士論文
• ISSN: 0736-0266
• Title: The stability of total talar prosthesis - How stable to dislocation? Cadaveric study （人工距骨の安定性－脱臼への耐性は如何ほどか？ カダバ研究）
• Volume: 40 9
• Author/Editor: 佐藤, 剛
• Author Heading: 佐藤, 剛
• Publication Date: 2022-09
• Publication Date (W3CDTF): 2022-09
• Periodical title: Journal of orthopaedic research : official publication of the Orthopaedic Research Society
• Degree grantor/type: 旭川医科大学
• Date Granted: 2022-09-30
• Date Granted (W3CDTF): 2022-09-30
• Dissertation Number: 乙第495号
• Degree Type: 博士（医学）
• Conferring No. (Dissertation): 乙第495号
• Text Language Code: eng
• Subject Heading: ankle stability; talar comminuted fracture; talar necrosis; total talar prosthesis
• Target Audience: 一般
• Note (General): type:application/pdf; The aim of this study was to characterize ankle stability of total talar prosthesis (TTP) and to determine the effect of implant sizes on stability as well as the resistance to TTP dislocation. Twelve below-knee cadaveric specimens were divided into two groups. Group 1 received a size matched implant and Group 2 received downsized implant by 5%. The stability assessment under fluoroscopy was performed for each cadaver in its native state. Following TTP insertion process, each then underwent evaluation of the TTP ankle stability. The stability of pre- and post-TTP was compared. (1) Anterior drawer distance. (2) Talar tilt angle under varus and valgus stress. (3) Subtalar tilt angle under varus stress was measured. Finally, the dislocation test was performed using the aforementioned testing conditions, then the stress force was slowly increased from 0 to 350 N, during which time it was observed on fluoroscopy all the time. Compared to pre TTP ankles, varus and anterior drawer stress showed significant instability (p < 0.001-0.031). Only anterior drawer stress in smaller sized implants showed significant instability when compared to identical sized implants (p = 0.008). No dislocation was seen under varus, valgus, and subtalar stress. However, anterior dislocation was observed in all cases of smaller size implant group (p = 0.045). TTP implant was stable under valgus and subtalar stress. However, clinicians should pay attention to anterior instability. Notably, downsized implants should be considered carefully to minimize the chance of anterior dislocation.; identifier:PMID:34897786
• DOI: info:doi/10.1002/jor.25237; https://doi.org/info:doi/10.1002/jor.25237
• Persistent ID (NDL): info:ndljp/pid/12361311; https://dl.ndl.go.jp/pid/12361311
• Collection: 障害者向け資料
• Collection (Materials For Handicapped People:1): テキストデータ
• Collection (particular): 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• Acquisition Basis: 博士論文（自動収集）
• Date Accepted (W3CDTF): 2022-11-07T16:56:35+09:00
• Format (IMT): PDF
• Access Restrictions: 国立国会図書館内限定公開
• Service for the Digitized Contents Transmission Service: 図書館・個人送信対象外
• Availability of remote photoduplication service: 可
• Periodical Title (URI): https://amcor.asahikawa-med.ac.jp/modules/xoonips/detail.php?id=20220930_O495
• Data Provider (Database): 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp