中国组织工程研究

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

肱骨旋入式自锁髓内钉改进设计及其生物力学特征

白晓兵1,赵勤鹏2   

  1. 1榆林市第一医院,陕西省榆林市  719000;2西安交通大学医学院附属红会医院,陕西省西安市  710054
  • 出版日期:2015-09-24 发布日期:2015-09-24
  • 通讯作者: 赵勤鹏,硕士生导师,副主任医师,西安交通大学医学院附属红会医院,陕西省西安市 710054
  • 作者简介:白晓兵,男,1976年生,陕西省绥德县人,汉族,主治医师,主要从事脊柱外科方面的研究。
  • 基金资助:

    陕西省科技厅社发攻关项目(2013k14-02-13)

Improved design and biomechanical characteristics of the rotary self-locking intramedullary nail of the humerus

Bai Xiao-bing1, Zhao Qin-peng2   

  1. 1the First Hospital of Yulin, Yulin 719000, Shaanxi Province, China; 2Honghui Hospital Affiliated to Health Science Center, Xi’an Jiaotong University, Xi’an 710054, Shaanxi Province, China
  • Online:2015-09-24 Published:2015-09-24
  • Contact: Zhao Qin-peng, Master’s supervisor, Associate chief physician, Honghui Hospital Affiliated to Health Science Center, Xi’an Jiaotong University, Xi’an 710054, Shaanxi Province, China
  • About author:Bai Xiao-bing, Attending physician, the First Hospital of Yulin, Yulin 719000, Shaanxi Province, China
  • Supported by:

    the Key Social Development Program of Science and Technology Department of Shaanxi Province, No. 2013k14-02-13

摘要:

背景:肱骨骨折可以利用旋入式自锁髓内钉进行治疗,以往的旋入式自锁髓内钉存在一定的应用局限性,需要对其进行改进设计,以获得更好的生物力学效果。
目的:对肱骨旋入式自锁髓内钉进行改进设计,并分析其生物力学特点和应用效果,为肱骨骨折的临床治疗提供一定的参考依据。
方法:①对旋入式自锁髓内钉进行改进设计,并进行力学测试。②选择63例肱骨骨折患者,根据随机数字表法分为两组,对照组(n=31)和实验组(n=32)。对照组利用常规旋入式自锁髓内钉进行治疗,实验组利用改进后的旋入式自锁髓内钉进行治疗。
结果与结论:改进后的髓内钉在抗轴向压缩、抗拉伸、抗扭转、抗弯曲方面的力学测试结果均显著优于改进前。置入前,两组患者的关节活动度指标得分差异均无显著性意义(P > 0.05);与治疗前相比,两组患者治疗后关节活动度指标得分均明显上升(P < 0.01或P < 0.05),且实验组患者治疗后关节活动度指标得分均显著高于对照组(P < 0.05);同时实验组治疗优良率显著高于对照组(P < 0.05)。表明在对旋入式自锁髓内钉进行适当的改进设计后,可以具备更加优良的力学特点,获得更好的临床应用效果。

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

关键词: 骨科植入物, 骨植入物, 肱骨, 肱骨骨折, 旋入式自锁髓内钉, 生物力学, 力学测试, 不良事件, 应用效果

Abstract:

BACKGROUND: Humeral fractures can be treated by using rotary self-locking intramedullary nail. The previous spin in self-locking intramedullary nail has some limitations in application, so it should be improved in its design so as to obtain better biomechanical effect.
OBJECTIVE: To improve the design of the rotary self-locking intramedullary nail of the humerus, and to analyze its biomechanical characteristics and application effect, and to provide reference for the clinical treatment of humeral fractures.
METHODS: (1) The design of the rotary self-locking intramedullary nail was improved and tested by mechanics test. (2) A total of 63 cases of humeral fractures were randomly divided into two groups: control group (31 cases) and experimental group (32 cases). Patients in the control group received conventional rotary self-locking intramedullary nail, and patients in the experimental group received improved nail.
RESULTS AND CONCLUSION: Results of mechanical test concerning anti-axial compression, tensile, torsion and bending were obviously better after improvement than before improvement. No significant difference in range of motion was detected between the two groups (P > 0.05). Compared with that before treatment, the range of motion was significantly increased after treatment in both groups (P < 0.01 or P < 0.05). The range of motion was significantly higher in the experimental group than in the control group (P < 0.05). Simultaneously, the excellent and good rate was significantly higher in the experimental group than in the control group (P < 0.05). These data
suggest that the improved rotary self-locking intramedullary nail has better mechanical characteristics and can obtain better clinical effect.

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, Bone Nails, Biomechanics

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