自主研制新型肩胛颈部解剖锁定钢板的生物力学对比  

Biomechanical Comparison of the Novel Self-Developed Scapular Neck Anatomical Locking Plate

作　　者：罗亮 何思远 刘晋辉 梁杰 杨楷文 范伟 向飞帆 阳运康 LUO Liang;HE Siyuan;LIU Jinhui;LIANG Jie;YANG Kaiwen;FAN Wei;XIANG Feifan;YANG Yunkang(The Second Department of Orthopedics,People’s Hospital of Chongqing Liang Jiang New Area,Chongqing 401121,China;Department of Ophthalmology,the Second Affiliated Hospital of Chongqing Medical University,Chongqing 400010,China;Department of Orthopaedics,the Affiliated Hospital of Southwest Medical University,Luzhou 646000,Sichuan,China;Sichuan Provincial Laboratory of Orthopaedic Engineering,Luzhou 646000,Sichuan,China)

机构地区：[1]重庆两江新区人民医院骨科二病区,重庆401121 [2]重庆医科大学附属第二医院眼科,重庆400010 [3]西南医科大学附属医院骨科,四川泸州646000 [4]四川省骨科置入器械研发及应用技术工程实验室,四川泸州646000

出　　处：《医用生物力学》2023年第5期969-975,共7页Journal of Medical Biomechanics

基　　金：四川省科技厅项目(2022NSFSC1534);四川省科技计划联合创新专项(2022YFS0628);泸州市科技局课题(2021-JYJ-60);泸县人民政府与西南医科大学联合课题(2020LXXNYKD-03)。

摘　　要：目的将自主研制新型肩胛颈部解剖锁定钢板与Watson重建接骨板进行生物力学对比分析,观察其生物力学方面的特点及优势。方法选取12具防腐、湿润的成人肩胛骨尸体标本(男7具,女5具),造模成肩胛颈骨折(Miller分型II B型)标本,根据取标本的先后顺序及性别随机分为实验组和对照组:实验组采用新型肩胛颈部解剖锁定钢板内固定,对照组采用Watson重建接骨板内固定。将标本安置钢板后在生物力学实验机上分别进行肩胛颈部抗拉伸实验、钢板螺钉抗拔出实验、动态疲劳实验。通过与实验终端相连接的计算机采集实验数据,并绘制力-位移曲线以及周期-位移曲线。结果在肩胛颈部抗拉伸实验中,实验组平均抗拉伸力[(356.50±32.19)N]优于对照组[(193.83±29.39)N](P<0.05)。在肩胛颈部钢板螺钉抗拔出实验中,实验组平均抗拔出力[(263.83±22.85)N]优于对照组[(135.50±15.40)N](P<0.05)。在动态疲劳实验中,300个周期内实验组平均位移小于对照组(P<0.05),且均未出现钢板、螺钉断裂松动现象。结论自主研制的新型肩胛颈部解剖锁定钢板在抗拉伸、抗拔出、动态疲劳生物力学性能优于重建接骨板,可为临床上治疗肩胛骨颈部骨折提供一种较为理想的内固定系统。Objective The biomechanical comparison between the novel scapular neck anatomical locking plate(SNALP)and the Watson reconstruction plate(WTRP)was conducted,so as to observe characteristics and advantages of the SNALP in the aspect of biomechanics.Methods Twelve preserved and moistened adult scapula cadaver specimens(7 males and 5 females)were selected and molded into scapular neck fracture 969(Miller’s type II B)specimens,which were randomly divided into experimental and control groups according to the order of specimen collection and gender:the SNALP for internal fixation was used in experimental group,and the WTRP for internal fixation was used in control group.The specimens were placed on the biomechanical testing machine,then the scapular neck tensile test,plate screw anti-pullout test and dynamic fatigue test were conducted respectively.The experimental data were collected by the computer connected to the experimental terminal,and the stress-displacement curves and cycle-displacement curves were plotted.Results In the scapular neck tensile test,the average tensile strength of experimental group[(356.50±32.19)N]was better than that of control group[(193.83±29.39)N](P<0.05).In the anti-pullout test of scapular neck plate and screw,the average anti-pullout force of experimental group[(263.83±22.85)N]was better than that of control group[(135.50±15.40)N](P<0.05).In dynamic fatigue test,the average displacement of experimental group was smaller than that of control group within 300 cycles(P<0.05),and no fracture and loosening of the steel plate and screw occurred.Conclusions The novel SNALP is better than the WTRP in terms of tensile,pullout and dynamic fatigue biomechanical properties,and can provide a more ideal internal fixation system for clinical treatment of scapular neck fractures.

关 键 词：肩胛颈骨折 肩胛颈解剖锁定钢板 重建接骨板 生物力学 

分 类 号：R318.01[医药卫生—生物医学工程]