组织工程与重建外科杂志

组织工程与重建外科杂志 ›› 2015, Vol. 11 ›› Issue (5): 320-322.doi: 10.3969/j.issn.1673-0364.2015.05.009

• 论著 • 上一篇    下一篇

锁定钢板外置与外固定支架固定骨折的生物力学研究

李乔，谭进红，马小明，梁春祥，李涤义   

  1. 广东省佛山市顺德区伦教医院骨外科；广东省佛山市南海区第八人民医院骨外科；中山大学附属第一医院脊柱外科
  • 发布日期:2020-07-23

Biomechanical Research on the Fixation of Fractures by External Locking Plate and External Fixator

LI Qiao, TAN Jinhong, MA Xiaoming, LIANG Chunxian, LI Diyi   

  1. 1 Department of Orthopedic Surgery, Lunjiao Hospital of Shunde Foshan, Foshan 528308, China; 2 Department of Orthopedic Surgery, The Eighth People＇s Hospital of Nanhai District, Foshan 528216, China; 3 Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.）
  • Published:2020-07-23
  • Contact: 广东省佛山市医学类科技攻关项目（20131021030077）

摘要： 目的 通过对锁定钢板(LCP)外置与外固定支架固定骨折进行生物力学分析,为应用锁定钢板外置固定治疗提供理论依据。方法 选择不同长度的牛小腿骨,制备成骨折标本,分别采用锁定钢板外置固定和外固定支架固定,观察标本在不同载荷下承受的轴向压缩、扭转和弯曲位移。结果 两组在100、200、300、400、500、600和700 N载荷下轴向压缩值比较,均有显著差异(P<0.05),且随着载荷越大轴向压缩值差距越大。两组在4、6、8、10、12和14 N.cm载荷下扭转角度比较,差异均有统计学意义(P<0.05),且随着载荷越大则扭转角度值差距越大。两组在50、100、150、200、250和300 N载荷下弯曲位移值比较,差异均有统计学意义(P<0.05),且随着载荷越大弯曲位移值差距越大。结论 锁定钢板外置固定骨折在生物力学性能上优于外固定支架,可在临床应用,为治疗开放性骨折提供了一种新的方法。

关键词: 锁定钢板, 外固定支架, 骨折, 生物力学

Abstract: Objective To explore the biomechanics of the fractures fixation by external locking plate and external fixator, and to provide a theoretical basis for clinical application of external locking plate in fracture fixation. Methods Bovine bones of different lengths were chosen as the artificial fracture specimens and external locking plate fixation and external fixation were adopted respectively to observe the axial compression, torsion and bending changes under different loads by using a variety of testing methods. Results The differences of the axial compressive load values between the two groups under 100, 200, 300, 400, 500, 600 and 700 N were statistically significant （P〈0.05）, with the larger of the load, the greater of the gap of axial compressive values. The differences of torsion angles between the two groups under 4, 6, 8, 10, 12, 14 N.cm were statistically significant （P〈0.05）, and the greater of the load, the bigger of the gap of torsion angles. The differences of bending load displacement values between the two groups under 50, 100, 150, 200, 250, 300 N were statistically significant （P〈0.05）, and with the greater of the load, the larger of the gap in bending displacement values. Conclusion The biomechanics of external locking plate fixation is better than the external fixator, and it can be clinically used as external fixators, providing a new method for the clinical treatment of open fractures.

Key words: Locking plate, External fixator, Fracture, Biomechanics

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