scholarly journals Biomechanical Responses and Injury Characteristics of Knee Joints under Longitudinal Impacts of Different Velocities

2018 ◽  
Vol 2018 ◽  
pp. 1-11
Author(s):  
Yan Xiong ◽  
Xueliang Zhao ◽  
Hongyi Xiang ◽  
Yunjiao Wang ◽  
Zhikang Liao ◽  
...  
Keyword(s):  
Finite Element ◽  
Knee Joint ◽  
Knee Joints ◽  
Longitudinal Impact ◽  
Element Analysis ◽  
Human Knee ◽  
Bone Stress ◽  
Element Simulation ◽  
The Impact ◽  
Impact Experiments

Background and Objective. Knee joint collision injuries occur frequently in military and civilian scenarios, but there are few studies assessing longitudinal impacts on knee joints. In this study, the mechanical responses and damage characteristics of knee longitudinal collisions were investigated by finite element analysis and human knee impact tests. Materials and methods. Based on a biocollision test plateau, longitudinal impact experiments were performed on 4 human knee joints (2 in the left knee and 2 in the right knee) to measure the impact force and stress response of the bone. And then a finite element model of knee joint was established from the Chinese Visible Human (CVH), with which longitudinal impacts to the knee joint were simulated, in which the stress response was determined. The injury response of the knee joint-sustained longitudinal impacts was analyzed from both the experimental model and finite element analysis. Results. The impact experiments and finite element simulation found that low-speed impact mainly led to medial injuries and high-speed impact led to both medial and lateral injuries. In the knee joint impact experiment, the peak flexion angles were 13.8° ± 1.2, 30.2° ± 5.1, and 92.9° ± 5.45 and the angular velocities were 344.2 ± 30.8 rad/s, 1510.8 ± 252.5 rad/s, and 9290 ± 545 rad/s at impact velocities 2.5 km/h, 5 km/h, and 8 km/h, respectively. When the impact velocity was 8 km/h, 1 knee had a femoral condylar fracture and 3 knees had medial tibial plateau fractures or collapse fractures. The finite element simulation of knee joints found that medial cortical bone stress appeared earlier than the lateral peak and that the medial bone stress concentration was more obvious when the knee was longitudinally impacted. Conclusion. Both the experiment and FE model confirmed that the biomechanical characteristics of the injured femur and medial tibia are likely to be damaged in a longitudinal impact, which is of great significance for the prevention and treatment of longitudinal impact injuries of the knee joint.

scholarly journals Strength Training Characteristics of Different Loads Based on Acceleration Sensor and Finite Element Simulation

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 647
Author(s):  
Bo Pang ◽  
Zhongqiu Ji ◽  
Zihua Zhang ◽  
Yunchuan Sun ◽  
Chunmin Ma ◽  
...  
Keyword(s):  
Finite Element ◽  
Knee Joint ◽  
Evaluation System ◽  
Bench Press ◽  
Element Analysis ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Intensity Of Exercise ◽  
Deep Squat ◽  
Main Factor

Deep squat, bench press and hard pull are important ways for people to improve their strength. The use of sensors to measure force is rare. Measuring strength with sensors is extremely valuable for people to master the intensity of exercise to scientifically effective exercise. To this end, in this paper, we used a real-time wireless motion capture and mechanical evaluation system of the wearable sensor to measure the dynamic characteristics of 30 young men performing deep squat, bench press and hard pull maneuvers. The data of tibia were simulated with AnyBody 5.2 and ANSYS 19.2 to verify the authenticity. The result demonstrated that the appropriate force of the deep squat elbow joint, the hip joint and the knee joint is 40% 1RM, the appropriate force of the bench press is 40% 1RM and the appropriate force of the hard pull is 80% 1RM. The external force is the main factor of bone change. The mechanical characteristics of knee joint can be simulated after the Finite Element Analysis and the simulation of AnyBody model are verified.

Service Life Study of the Artificial Knee-Joints of Crossed Pairing

2013 ◽  
Vol 655-657 ◽  
pp. 1963-1967
Author(s):  
Li Liu ◽  
Lin Wei ◽  
Meng Yu
Keyword(s):  
Finite Element ◽  
Service Life ◽  
Knee Joint ◽  
Finite Element Simulation ◽  
Contact Analysis ◽  
Knee Joints ◽  
Design Calculation ◽  
Life Study ◽  
Element Simulation ◽  
Maximal Contact

The stress relationship between the artifical knee-joints of the same pairing and crossed pairing was studied by the contrastive contact analysis of finite element simulation in different angles and conditions. The service lives of the artifical knee-joints of different pairing were studied based on the above result and Archard wear design calculation theory to expand the application of existing artificial knee-joints. The result shows that, the maximal contact stresses of the artifical knee-joints of crossed pairing are more than those of the artifical knee-joints of the same pairing, and the more different pairing types are, the more obvious stress growths are. The service life of the artifical knee-joint of 3/3 pairing is 28.42 years, and the service lives of 3/2.5 pairing and 3/4 pairing are 27.08 years and 25.76 years respectively.

Finite element analysis of human knee joint in varus-valgus

1997 ◽  
Vol 12 (3) ◽  
pp. 139-148 ◽  
Author(s):  
MZ Bendjaballah ◽  
A Shirazi-Adl ◽  
DJ Zukor
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Knee Joint ◽  
Element Analysis ◽  
Human Knee ◽  
Human Knee Joint

scholarly journals Evaluating the effects of material properties of artificial meniscal implant in the human knee joint using finite element analysis

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Duraisamy Shriram ◽  
Gideon Praveen Kumar ◽  
Fangsen Cui ◽  
Yee Han Dave Lee ◽  
Karupppasamy Subburaj
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Knee Joint ◽  
Material Properties ◽  
Element Analysis ◽  
Human Knee ◽  
Human Knee Joint

scholarly journals Development of impact attenuator analysis tools in crash scenario using Euler method and finite element analysis

2022 ◽  
Vol 69 (1) ◽  
Author(s):  
Malik Athafarras ◽  
Djati Wibowo Djamari ◽  
Muhamad Rausyan Fikri ◽  
Bentang Arief Budiman ◽  
Farid Triawan ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Method ◽  
Euler Method ◽  
Element Analysis ◽  
Time Model ◽  
Crash Simulation ◽  
Car Crash ◽  
Element Simulation ◽  
The Impact

AbstractThe problem considered in this work is the development of simulation method for simulating car crash which utilizes simple car—impact attenuator model developed in MATLAB. Usually, car crash simulation is done using full finite element simulation which could take hours or days depending on the model size. The purpose of proposed method is to achieve quick results on the car crash simulation. Past works which utilizes simple car—impact attenuator model to simulate car crash use continuous time model and the impact attenuator parameter is obtained from the experimental results. Different from the related works, this work uses discrete time model, and the impact attenuator parameter is obtained from finite element simulation. Therefore, the proposed simulation method is not only achieving quick simulation results but also minimizing the cost and time in obtaining the impact attenuator parameter. The proposed method is suitable for parametric study of impact attenuator.

Modeling and analysis of knee joint impact damage in triple jump manipulators based on finite element method

2019 ◽  
Vol 10 (05) ◽  
pp. 1950030
Author(s):  
Mingquan Long
Keyword(s):  
Finite Element ◽  
Knee Joint ◽  
Impact Damage ◽  
Jump Process ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Joint Injury ◽  
Jump Training ◽  
Knee Joint Injury ◽  
The Impact

In order to study the three jump training and competition on knee joint impact damage degree, left knee joint of one healthy male athletes is used as the research object, a complete knee three-dimensional model was established based on the jumper’s knee CT scan and magnetic resonance imaging (MRI), including the femur, tibia, fibula, patella and knee major cartilage, ligaments. The multi-body dynamics analysis (MDA) and finite element analysis (FEA) method are used to calculate the three jump, jump starting, landing process of athletes knee joint impact, the state should change the status of stress, strain and displacement. The results show that in the three jump process, the load on the lateral contact area of the knee joint is the largest, the displacement is the largest, and it increases with the impact of jump and landing. This exacerbated the degree of wear and tear of the tibia, it tends to induce knee injury in athletes. The results show that the combination of finite element and MDA can better study the knee joint’s shock and vibration during the three-level jump training and competition, and these open up a new research method for the knee joint injury. It also provides a certain reference for the prevention and treatment of knee joint injury.

Using Magnetic Measurement Technology in Marine Riser Stress Detection

2010 ◽  
Author(s):  
Fanshun Meng ◽  
Rui Deng ◽  
Dawei Wang ◽  
Yanming Huang ◽  
Liyan Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Magnetic Measurement ◽  
Measurement Technology ◽  
Stress Detection ◽  
Marine Riser ◽  
Element Analysis ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
The Impact

The marine riser bears various power loads during operation. We designed the Quadrupole-type magnetic measurement probe based on the inverse magnetostrictive effect (the impact of stress on the magnetization) and performed finite element simulation and experimental analysis. The results of both the finite element analysis and magnetic measurement basically follow the same trend, so we conclude that this four-pole magnetic probe measurement can quantitatively evaluate the force state in a marine riser.

Modeling and Finite Element Analysis of the Human Knee Joint Affected by Osteoarthritis

2014 ◽  
Vol 601 ◽  
pp. 147-150 ◽  
Author(s):  
Daniela Tarniţă ◽  
Marius Catana ◽  
Dan Nicolae Tarnita
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Articular Cartilage ◽  
Knee Joint ◽  
Cartilage Damage ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Human Knee ◽  
Biomechanical Behavior ◽  
Human Knee Joint

The paper presents a complex three-dimensional model of the human knee joint, containing bones, ligaments, menisci, tibial and femoral cartilages. To investigate the role of the articular cartilage in the developing of the osteoarthritis, to analyze and simulate the biomechanical behavior of the human knee joint, a finite element analysis was performed. The non-linearities are due to the presence of the contact elements modeled between components surfaces and to the nonlinear properties of the cartilage, applying a load of 800 N and 1500 N, for 0o in flexion. The results show that misalignment (valgus variation) could damage the articular cartilage because they increase the stress magnitude, that progressively produce articular cartilage damage and it enhances the osteoarthritis phenomenon due to mechanical factors. The displacements and the Von Mises stress distributions on the cartilage and menisci for the virtual prototype, considering an angle of 10 degrees for valgus, are presented. The obtained values are comparable with the values obtained by other authors.

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