A cadaveric study on the strain rate dependent behavior of human anterior cruciate ligament

Acta of Bioengineering and Biomechanics

article

M.Marieswaran¹  A.Sikidar¹  A.Rana¹  D.Singh¹  N.Mansoori⁵  S.Lalwani⁵  D.Kalyanasundaram¹ 

[1]Centre for Biomedical Engineering, Indian Institute of Technology (IIT) Delhi

[2]Department of Sports Biomechanics, School of Sports Sciences, Central University of Rajasthan

[3]Department of Mechanical Engineering

[4]Centre for Advanced Manufacturing and Metrology, CSIR – Central Mechanical Engineering Research Institute

[5]Cadaver Training Research Facility (CTRF), Jai Prakash Narayan Apex Trauma Centre (JPNTC), All India Institute of Medical Sciences (AIIMS)

[6]Department of Biomedical Engineering, AIIMS

DOI  :  10.37190/ABB-01672-2020-05

学科分类：生物科学（综合）

来源: Politechnika Wroclawska

【 摘 要 】

Purpose: Failure of anterior cruciate ligament often occurs in young sports personnel hampering their career. Such ACL ruptures are quite prevalent in sports such as soccer during dynamic loading which occurs at more than one rate of loading. In this work, a structural constitutive equation has been used to predict the forces acting on ACL for different rates of loading. Methods: Ligaments with distal femur and proximal tibia were subjected to tensile loading to avoid crushing of tissue ends and slipping at higher rates of strain. Custom designed cylindrical grippers were fabricated to clamp the distal femur and proximal tibial bony sections. To estimate parameters for the model, eighteen fresh cadaveric femur-ACL-tibia complex (FATC) samples were experimented on by pure tensile loading at three orders of rates of strain viz., 0.003, 0.03, and 0.3 s–1. The experimental force-elongation data was used to obtain parameters for De-Vita and Slaughter’s equation. The model was validated with additional tensile experiments. Results: Statistical analysis demonstrated failure stress, Young’s modulus and volumetric strain energy to vary significantly as a function of rate of strain. Midsection failure was observed only in samples tested at 0.03 s–1. Femoral or tibial insertion failure were observed in all other experiments irrespective of rate of strain. Conclusion: Human FATC samples were tensile tested to failure at three rates of strain using custom-designed cylindrical grippers. A structural model was used to model the data for the ACL behaviour in the linear region of loading to predict ligament behaviour during dynamic activities in live subjects.

【 授权许可】

Unknown