中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (26): 3909-3915.doi: 10.3969/j.issn.2095-4344.2016.26.017

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

普通加压钢板与锁定钢板内固定修复老年复杂性肱骨干中下段骨折的生物力学比较

赵峰峰   

  1. 泰安市中心医院,山东省泰安市 271000
  • 修回日期:2016-04-26 出版日期:2016-06-24 发布日期:2016-06-24
  • 作者简介:赵峰峰,男,1986年生,山东省人,汉族,2015年泰山医学院毕业,硕士,医师,主要从事骨外科方面的研究。

Comparison of biomechanics of common compression plate and locking plate fixation for middle and lower complex humeral shaft fracture in the elderly

Zhao Feng-feng   

  1. Taian City Central Hospital, Taian 271000, Shandong Province, China
  • Revised:2016-04-26 Online:2016-06-24 Published:2016-06-24
  • About author:Zhao Feng-feng, Master, Physician, Taian City Central Hospital, Taian 271000, Shandong Province, China

摘要:

文章快速阅读:

 
 

 

文题释义:
锁定钢板固定:锁定钢板固定对肱骨骨折旋转、分离、成角移位均能良好控制,能实行骨折端加压,对邻近关节干扰较少,被认为是手术治疗肱骨干骨折的金标准,可提供足够的抗扭转强度,有效维持骨折端稳定并控制断端旋转,是最为有效的固定方法之一。
普通加压钢板固定:肱骨骨折普通加压钢板固定需一定时间的石膏外固定,并发症多,钢板不易安置服贴,且桡神经常于肱肌与肱桡肌之间分出数支,钢板插入时容易损伤,如选择的钢板长度不足或普通加压钢板强度不够,不能提供足够的抗扭转强度,不能有效维持骨折端稳定。
 
摘要
背景:肱骨干中下段骨折是临床常见上肢骨折,在老年人群中发生率及复发率都较高,然而目前缺乏疗效理想的修复方法。
目的:对比分析普通加压钢板与锁定钢板内固定修复老年复杂性肱骨干中下段骨折的生物力学差异。
方法:筛选30对防腐老年人肱骨标本,人工制造肱骨中下段骨折模型。将同一个体来源的2个肱骨完整取下随机分为2组,分别采用锁定钢板和普通加压钢板固定,并通过实验力学模型检测钢板和标本分别在压缩、弯曲和扭转3种不同负载方式下的位移值和扭转角度,分析并比较2组数据。
结果与结论:①所有标本在排除相关因素影响后,选取其中骨密度高、质量优等的标本进行实验;②锁定钢板在轴向负荷为500 N,弯曲负荷为7.0 N•m,扭转负荷为3 N•m以内的压缩、弯曲、扭转等条件下,其应变均小于普通加压钢板组(P < 0.05),锁定钢板组肱骨标本的相对位移在以上加载方式下也均小于普通加压钢板组(P < 0.05);③以上数据表明,锁定钢板有较好的抗压、抗弯曲和抗扭转性能,能保证骨折连接处的稳定和一体性。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

ORCID:
0000-0003-2736-4528(赵峰峰)

关键词: 骨科植入物, 骨植入物, 复杂性肱骨干骨折, 老年, 锁定钢板, 普通加压钢板, 生物力学, 轴向负荷

Abstract:

BACKGROUND: The lower and middle humeral shaft fractures are common upper limb fractures. Incidence rate and recurrence rate were high in the elderly population. However, there is a lack of a method with ideal curative effect.

OBJECTIVE: To compare and analyze the biomechanical differences between common compression plate and locking plate fixation in the repair of middle and lower complex humeral shaft fracture in the elderly.
METHODS: 30 pairs of antiseptic elderly humerus specimens were selected to make models of middle and lower humeral shaft fracture. Two humeri from the same individual were randomly assigned to two groups, and subjected to locking plate and common compression plate fixation. Experimental mechanics models were used to determine displacement and torsion angle under compression, bending and torsion. Data were analyzed and compared between the two groups.
RESULTS AND CONCLUSION: (1) After exclusion of relevant factors, specimens with high bone density and excellent quality were selected from all specimens. (2) Under axial load of 500 N, the bending load of 7.0 N•m and torsional load of 3 N•m or less, the strain was smaller in locking plate group than in common compression plate group under compression, bending and torsion (P < 0.05). Relative displacement under the above loading was smaller in locking plate group than in common compression plate group (P < 0.05). (3) Above data suggested that locking plate has good compressive, flexural and torsional rigidity, can ensure the stability and integrity of the fracture connection. 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Humeral Fractures, Internal Fixators, Biomechanics, Tissue Engineering

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