骶2骶骨翼螺钉在腰骶椎稳定性中的应用  

Application of sacral-2-alar screws in lumbosacral stability

作　　者：陈良龙 付星宇 童新宙 郑阳 杨静海 刘继成 向姿惠 CHEN Lianglong;FU Xingyu;TONG Xinzhou;ZHENG Yang;YANG Jinghai;LIU Jicheng;XIANG Zihui(Spinal Surgery and Operating Room,Loudi Central Hospital,University of South China Afiliated Loudi Hospital,Loudi,Hunan 417000,China)

机构地区：[1]南华大学附属娄底医院娄底市中心医院脊柱外科及手术室,湖南娄底417000

出　　处：《中国临床研究》2025年第4期593-596,共4页Chinese Journal of Clinical Research

基　　金：湖南省科技厅临床医疗创新引导项目(S2021SFYLJS0214);湖南省自然科学基金项目(2024JJ9599)。

摘　　要：目的 探讨骶2骶骨翼螺钉固定的最大拔出力,并研究该内固定方法的有效性。方法 选取5具甲醛溶液固定并润湿的成年尸体标本,以及6具新鲜冰冻的尸体。在同一尸体标本的左右两侧随机放置3种骶骨螺钉,包括:经骨水泥加固的骶2骶骨翼螺钉(S_(2)组)、S_(1)椎弓根螺钉(S_(1)组)和骶2骶髂螺钉(S_(2)AI组)。通过对螺钉施加轴向拔出力来记录3组骶骨螺钉的即时最大拔出力值。结果 11具尸体标本的S_(2)组螺钉的最大轴向拔出力为(521.80±98.98)N,S_(1)组为(843.16±107.64)N,S_(2)AI组为(536.04±145.78)N, 3组比较差异有统计学意义(F=25.52,P<0.01);S_(2)组与S_(2)AI组力量相当,差异无统计学意义(P>0.05)。结论 骶2骶骨翼骨水泥加强螺钉具有良好的力学性能,适宜临床应用。Objective To explore the maximum pull-out force of alar screws fixation in sacral 2 and investigate the effectiveness of this internal fixation method.Methods Five adult cadaver specimens fixed and wetted with formaldehyde solution were selected,as well as six fresh frozen cadavers.Randomly place three types of sacral screws on both sides of the same cadaver specimen,including:sacral-2-alar screws reinforced with bone cement(S_(2) group),S_(1) pedicle screw(S_(1) group),sacral-2-alar-iliac screws(S_(2)AI group).The instantaneous maximum pull-out force values of three groups of sacral screws by applying axial pull-out force to the screws were recorded.Results The maximum axial pullout force of screws in 11 cadaver specimens was(521.80±98.98)N in S_(2) group,(843.16±107.64)N in S_(1) group,and(536.04±145.78)N in S_(2)AI group,and the difference among three groups was significant(F=25.52,P<0.01).The strength of S_(2) group and S_(2)AI group was comparable,and there was no significant difference between the two groups(P>0.05).Conclusion Sacral-2-alar screws reinforced with bone cement have good mechanical properties and are suitable for clinical application.

关 键 词：腰椎 骶椎 稳定性 内固定 融合 骶骨翼螺钉 骶髂螺钉 

分 类 号：R687.3[医药卫生—骨科学]