イバ　ヒデアキ   Hideaki Iba   射場　英明    所属   川崎医科大学  医学部 臨床医学　脊椎・関節整形外科学    職種   講師
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Efficiency of Long Lateral Mass Screws.
掲載誌名	正式名：Journal of clinical medicine 略　 称：J Clin Med ISSNコード：20770383/20770383
掲載区分	国外
巻・号・頁	11(7),pp.1953
著者・共著者	Seiya Watanabe, Kazuo Nakanishi, Kosuke Misaki, Kazuya Uchino, Hideaki Iba, Takachika Shimizu
発行年月	2022/03
概要	INTRODUCTION:Lateral mass screws (LMS) have been widely used for the posterior fusion of the cervical spine. Even though LMS are safe, the screws are short and postoperative fixation is uncertain. Therefore, we measured and reported a technique using long lateral mass screws (LLMS), a new method of screw insertion, using a Zed spine from LEXI (Tokyo, Japan).MATERIALS AND METHODS:In this study, we evaluated the outcomes of 35 patients who underwent surgery using LLMS at our hospital from 2019 to 2021. Operative time, blood loss, complications, inserted screw length, screw length based on gender differences, and screw deviation rate were evaluated. The Mann-Whitney U test was used to determine the gender differences in screw length. Screw deviation was evaluated by postoperative CT and a Zed spine to determine the screw insertion angle.RESULTS:The mean operative time was 185 ± 51 min (120-327 min), and the mean blood loss was 236 ± 316 g (10-1720 g). The total number of screws was 183. The screw length was 22.2 (16-28) mm for males and 20.8 (16-28) mm for females, with an average length of 21 ± 2.7 mm. No gender differences were observed in terms of screw length (p > 0.01 NS). The number of deviated screws above G3 was one in the third cervical vertebra, three in the fourth cervical vertebra, one in the fifth cervical vertebra, and one in the sixth cervical vertebra. The number of deviated screws was 6 out of 183, and the deviation rate was 3.2%.CONCLUSIONS:In this study, the LLMS deviation rate was 3.2%, and strong fixation was possible without any complications. We measured the screw length and screw deviation rate in cases in which LLMS were actually inserted.
DOI	10.3390/jcm11071953
PMID	35407561