6种内固定方式在固定指骨侧副韧带撕脱性骨折中的力学稳定性比较  

Comparison of mechanical stability of six internal fixation methods in fixing avulsion fracture of phalangeal collateral ligament

作　　者：尚晓强 段祥林 周祥昆 陶圣祥[2] 郑洲[3] Shang Xiaoqiang;Duan Xianglin;Zhou Xiangkun;Tao Shengxiang;Zheng Zhou(Department of Orthopedics,Wuhan Red Cross Hospital,Wuhan Hubei,430015;Department of Orthopedics,Central South Hospital of Wuhan University,Wuhan Hubei,430071;Department of Anatomy,Hubei University of Traditional Chinese Medicine,Wuhan Hubei,430070,China)

机构地区：[1]武汉红十字会医院骨科,湖北武汉430015 [2]武汉大学中南医院骨科,湖北武汉430071 [3]湖北中医药大学解剖教研室,湖北武汉430070

出　　处：《生物骨科材料与临床研究》2022年第6期6-8,共3页Orthopaedic Biomechanics Materials and Clinical Study

基　　金：武汉市卫生与计划生育委员会2020年医学科研项目面上项目(WZ20B29)。

摘　　要：目的对比分析6种内固定方式在固定指骨侧副韧带撕脱性骨折中的力学稳定性。方法将6对新鲜手标本的近节指骨制作成侧副韧带撕脱性骨折模型。一对手分为观察组和对照组:观察组均采用新型钩钢板固定;对照组拇指行自制带钩钢板固定,示指行微型螺钉固定,中指行克氏针固定,环指行普通钢板塑形后固定,小指行横形微型带钩钢板固定。对侧副韧带加载测试,记录骨折端分离2 mm的最大张力,对比分析力学差异。结果观察组拇指、示指、中指、环指、小指近节骨折端分离2 mm的最大张力分别为:(62.67±5.52)N、(58.22±5.23)N、(55.63±4.17)N、(48.57±4.50)N、(48.58±1.56)N;对照组分别为:(51.13±4.03)N、(22.88±3.52)N、(24.87±3.48)N、(47.17±2.77)N、(31.90±2.83)N。力学测试中环指组对比未见明显差异,余手指组观察组与对照组差异均有统计学意义(P<0.05)。结论新型钩钢板和普通塑形钢板固定在手指侧副韧带撕脱性骨折的固定中具有较强的生物力学稳定性。Objective To compare the mechanical stability of six internal fixation methods in the treatment of avulsion fracture of collateral ligament of the phalange.Methods Six pairs of fresh hand specimens were made into the avulsion fracture model of collateral ligament.A pair of hands were divided into experimental group and control group.The experimental group was fixed with new hook plate.In the control group,the thumb was fixed with self-made hook plate,the index finger was fixed with micro screw,the middle finger was fixed with Kirschner wire,and the ring finger was fixed with ordinary plate,the little finger was fixed with transverse micro hook steel plate.The lateral collateral ligament was loaded to test,and the maximum tension of 2 mm was recorded and the mechanical difference was analyzed.Results The maximum tension of 2 mm was(62.67±5.52)N,(58.22±5.23)N,(55.63±4.17)N,(48.57±4.50)N,(48.58±1.56)N in the experimental group,and(51.13±4.03)N,(22.88±3.52)N,(24.87±3.48)N,(47.17±2.77)N,(31.90±2.83)N in the control group respectively.There was no significant difference between the experimental group and the control group in the mechanical test to the ring finger,but the difference between the experimental group and the control group to the other fingers was statistically significant(P<0.05).Conclusion The new hook plate and ordinary plastic plate have strong biomechanical stability in the fixation of avulsion fracture of finger collateral ligament.

关 键 词：指骨 侧副韧带 撕脱性骨折 

分 类 号：R318[医药卫生—生物医学工程]