ミタニ　シゲル   Shigeru Mitani   三谷　茂    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   教授
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 Screw in Posterior Cervical Fusion.
掲載誌名	正式名：Cureus 略　 称：Cureus ISSNコード：21688184/21688184
掲載区分	国外
巻・号・頁	16(7),pp.e65139
著者・共著者	Seiya Watanabe, Kazuo Nakanishi, Kazuya Uchino, Hideaki Iba, Yoshihisa Sugimoto, Shigeru Mitani
担当区分	最終著者
発行年月	2024/07/22
概要	INTRODUCTION:Long lateral mass screw (LLMS) technique for posterior cervical fusion has been performed in our hospital since 2019. In this study, the LLMS insertion technique, deviation rate, and insertion torque have been described. Moreover, several major concerns associated with LLMS have been adequately addressed.METHODS:This study included 58 patients (43 men and 15 women) who had undergone LLMS surgery at our hospital during the four-year period from December 2019 to December 2023, and were evaluated using postoperative CT. The evaluation parameters included the screw length at each vertebral segment, screw angle in the sagittal section, distance between the screw heads, and complications.RESULTS:The median screw length at C3 was 23.0 mm (22.0-24.0 mm), the screw angle was 36.1° (31.6-41.8°), and the distance between screw heads was 13.8 mm (11.6-17.2 mm). The median screw length at C4 was 22.0 mm (21.0-24.0 mm), the screw angle was 36.2° (28.7-40.7°), and the distance between screw heads was 15.9 mm (13.0-19.0 mm). The median screw length at C5 was 21.0 mm (20.0-22.0 mm), the screw angle was 35.6° (28.0-39.7°), and the distance between screw heads was 17.6 mm (15.1-20.4 mm). The median screw length for C6 was 20.0 mm (19.0-22.0 mm), the screw angle was 29.2° (25.2-36.8°), and the distance between screw heads was 20.4 mm (16.1-24.4 mm).CONCLUSION:The major limitations of the LLMS technique were inadequate screw angle, difficulty inserting long screws, inadequate decompression, and the inability to perform cervical laminoplasty. However, these limitations did not substantially affect the efficiency of LLMS. LLMS has fewer complications and can insert longer screws than LMS.
DOI	10.7759/cureus.65139
PMID	39171013