Sep 25, 2014

Webinar: Modelling and Simulating Anterior Cruciate Ligament (ACL) Injuries in Young Female Athletes

Learn how to model the ACL and analyze simulation results to understand ACL injury mechanisms


A recording of the event is available for download, and the model and files needed to reproduce the research described in the webinar is available at You can also learn more about this study in the associated publications:

"A Numerical Simulation Approach to Studying Anterior Cruciate Ligament Strains and Internal Forces among Young Recreational Women Performing Valgus Inducing Stop-Jump Activities," Annals of Biomedical Engineering, 40(8):1679-1691.

"A Musculoskeletal Modeling Approach for Estimating Anterior Cruciate Ligament Strains and Knee Anterior–Posterior Shear Forces in Stop-Jumps Performed by Young Recreational Female Athletes," Annals of Biomedical Engineering, 41(2):338-348.


Title: Modelling and Simulating Anterior Cruciate Ligament (ACL) Injuries in Young Female Athletes
Speaker: Dr. Julia Kar, Washington University
Time: Thursday, September 25, 2014 at 10:00 a.m. Pacific Daylight Time


The event is free, but registration is required. To register for the event, click here


Anterior cruciate ligament (ACL) injuries are frequently incurred by young recreational and professional female athletes during non-contact impact activities in sports like volleyball and basketball. The seriousness of such high-impact knee injuries are evident from an examination of high school season-ending injuries, 91% of which occur due to non-contact maneuvers like landing from a jump, side-cutting or sudden change of direction.

In this presentation, I will demonstrate musculoskeletal-neuromuscular modelling and simulation methodologies for determining the underlying causes of these injuries in young female athletes while performing stop-jump activities. Specific details on modelling the ACL as a passive tissue within the musculoskeletal (knee) structure with two fixed ends inserted into the femur and tibia will be presented. I will also discuss the methods and results from using this model to investigate the effects of various aspects of the stop jump activity on biomechanical parameters that might predict ACL injury, including knee valgus and internal-external rotations and moment loads, as well as ACL strains and internal forces. Here, I will specifically discuss how the ACL strains and internal forces can be determined from its tissue properties and knee joint dynamics during the stop-jump trajectories.

The model and simulation files used to generate the results of this study are provided in the project They can be used as a guide for creating, simulating, and visualizing the 3-dimensional ACL and other knee biomechanics while stop jumps are performed.