Noninvasive determination of knee cartilage deformation during jumping

The purpose of this investigation was to use a combination of image processing, force measurements and finite element modeling to calculate deformation of the knee cartilage during jumping. Professional athletes performed jumps analyzed using a force plate and high-speed video camera system. Image p...

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Bibliographic Details
Published in:Journal of sports science & medicine 2009-12, Vol.8 (4), p.584-590
Main Authors: Filipovic, Nenad, Vulovic, Radun, Peulic, Aleksandar, Radakovic, Radivoje, Kosanic, Djordje, Ristic, Branko
Format: Article
Language:English
Subjects:
Algorithms
Ankle
Athletes
Bioengineering
Biomechanics
Cameras
Cartilage
Computer simulation
Computers
Employment
Engineering
Force
Health aspects
Injuries
Jumping
Kinematics
Knee
Knee injuries
Mathematical models
Measurement
Medical research
Numerical analysis
Pattern recognition
Physiology
R&D
Research & development
Risk factors
Software
Sports training
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Summary:The purpose of this investigation was to use a combination of image processing, force measurements and finite element modeling to calculate deformation of the knee cartilage during jumping. Professional athletes performed jumps analyzed using a force plate and high-speed video camera system. Image processing was performed on each frame of video using a color recognition algorithm. A simplified mass-spring-damper model was utilized for determination of global force and moment on the knee. Custom software for fitting the coupling characteristics was created. Simulated results were used as input data for the finite element calculation of cartilage deformation in the athlete's knee. Computer simulation data was compared with the average experimental ground reaction forces. The results show the three-dimensional mechanical deformation distribution inside the cartilage volume. A combination of the image recognition technology, force plate measurements and the finite element cartilage deformation in the knee may be used in the future as an effective noninvasive tool for prediction of injury during jumping. Key pointsEven there are many existing mathematical models of force distribution during running or jumping (Liu et al, 1998), to our knowledge there is no interdisciplinary approach where imaging processing, finite element modeling and experimental force plate system are employed.The aim is to explore noninvasive deformation in the knee cartilage during athlete's jumping on the force plate.An original image algorithms and software were developed as well as complex mathematical models using high-performance computational power of finite element modeling together with one-dimensional dynamics model.The initial results showed cartilage deformation in the knee and future research will be focused on the methodology and more precisely determination of the stress and strain distribution in the knee cartilage during training phase of sportsman.
ISSN:1303-2968
1303-2968