教員業績データベース |
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論文種別 | 原著 |
言語種別 | 英語 |
査読の有無 | 査読なし |
表題 | Use of the G-guide for measuring stem antetorsion during total hip arthroplasty. |
掲載誌名 | 正式名:Orthopedics 略 称:Orthopedics ISSNコード:1938-2367(Electronic)0147-7447(Linking) |
掲載区分 | 国外 |
巻・号・頁 | 39(2),pp.e271-5 |
著者・共著者 | Fujihara Yuki, Fukunishi Shigeo, Fukui Tomokazu, Nishio Shoji, Okahisa Shohei, Takeda Yu, Kurosaka Kenji, Yoshiya Shinichi |
発行年月 | 2016/03 |
概要 | UNASSIGNED:Implant positioning is one of the critical factors influencing postoperative outcomes in total hip arthroplasty (THA). Several studies have reported that the postoperative antetorsion (AT) measurement for the femoral stem inserted without navigation showed wide variability. The current authors developed a simple instrument, the Gravity-guide (G-guide), for intraoperative assessment of stem AT and adjustment. They evaluated the effectiveness of the G-guide with postoperative computed tomography (CT) examination. Ninety patients (96 hips) who underwent primary THA using the G-guide for stem adjustment were evaluated. The G-guide consisUNASSIGNED:ts of 2 parts: one attached to the lower leg and the other attached to the handle of the rasp. The G-guide was used to evaluate the AT at the time of inserting the final rasp. In addition, the AT value in the G-guide evaluation system required correction by the angle obtained in the preoperative epicondylar view. Intraoperative stem AT was defined as the sum of the intraoperative G-guide value and the correction angle. Postoperative AT was evaluated by CT examination. The discrepancy between the intra- and postoperative measurements was 4.6°±4.1°. Acceptable accuracy with discrepancy of less than 5° and 10° was achieved in 66 (69%) hips and 85 (89%) hips, respectively. The use of the G-guide could effectively reduce the variability of stem anteversion compared with manual adjustment. This study proved the effectiveness of the newly developed G-guide system in intraoperative stem AT adjustment. [Orthopedics.UNASSIGNED:]UNASSIGNED:. |
DOI | 10.3928/01477447-20160201-03 |
PMID | 26881466 |