Comparison of Constitutive Models for Meniscus and Their Effect on the Knee Joint Biomechanics During Gait

2021 ◽  
Author(s):  
Tulashi Simkheada ◽  
Gustavo A. Orozco ◽  
Rami K. Korhonen ◽  
Petri Tanska ◽  
Mika Mononen
Keyword(s):  
Knee Joint ◽  
Constitutive Models ◽  
Joint Biomechanics

The Joint Biomechanics Change by Different Anterior Cruciate Ligament Constitutive Models Under Axial Torque Load

2012 ◽  
Author(s):  
Chao Wan ◽  
Zhixiu Hao ◽  
Shizhu Wen
Keyword(s):  
Knee Joint ◽  
External Rotation ◽  
Cruciate Ligament ◽  
Constitutive Models ◽  
Collateral Ligament ◽  
Torque Load ◽  
Joint Biomechanics ◽  
Hyperelastic Model ◽  
Anterior Cruciate ◽  
Anterior Posterior

According to the previous papers, it was demonstrated that anterior cruciate ligament (ACL) played an important role in resisting the coupled anterior-posterior laxity rather than the rotation laxity under axial torque load of knee joint. In the biomechanics simulation research of knee joint, some different ligament constitutive models were presented to describe the ACL material behavior. However, there is few published paper to study the effect of variable ligament constitutive model on the joint biomechanics under axial torque load. In this paper, a 3-dimension finite element model of an intact tibiofemoral joint including all the main anatomical structures was reconstructed and two ACL constitutive models were compared under 10 Nm femur external torque load. The two ACL constitutive models corresponded to an isotropic hyperelastic model and a transversely isotropic hyperelastic model considering fiber effect, respectively. All the ACL material properties of the two constitutive models were defined by fitting the same stress-strain data. Another model with ACL resected was also analyzed under the same load to estimate the function ACL played under joint axial torque load. It was found that the resection of ACL changed the knee joint deformations significantly in all directions except the distal-proximal translation. In the ACL resected joint model, the internal-external rotation, anterior-posterior and medial-lateral translations increased by about 20%, 500% and 600%, respectively. Comparing to the ACL intact joint model, the Mises stress values of medial collateral ligament decreased while that on lateral collateral ligament increased greatly (from 35 MPa to 61 MPa). In the comparison of the two different ACL constitutive models, the internal-external rotation, as the highest deformation of the knee joint, changed by about 11% and the maximal deformation alteration was obtained in the anterior-posterior translation (about 80%). Both the highest stress value and distribution on ACL have altered mostly while the Mises stress distributions of other ligaments and menisci have changed slightly. The alteration of joint kinematics and ligament biomechanics by different ACL constitutive models would be due to the different descriptions of the material transverse behavior and the real complex ACL stress distribution under an axial torque load, although the longitudinal material behaviors described by different ACL constitutive models were almost the same based on the same experiment data.

The Use of a Permutation Approach in the Solution of Joint Biomechanics: The Knee

1981 ◽  
Vol 10 (1) ◽  
pp. 39-43 ◽  
Author(s):  
M Nissan
Keyword(s):  
Knee Joint ◽  
Accurate Solution ◽  
Joint Diseases ◽  
Prosthetic Design ◽  
Regular Method ◽  
Internal Equilibrium ◽  
Joint Biomechanics ◽  
Human Joints

The internal equilibrium of human joints has been dealt with by many investigators, either as a means for better understanding and treating joint diseases or as a basis for prosthetic design. In all cases there is less information than needed for an accurate solution, and the investigators have to use simplifying geometry and restricting assumptions. In this work a permutation method was used, which takes advantage of big computer facilities in order to reduce the number of assumptions needed. The method was used for the case of the knee joint. The results were compared to those available using a regular method, showing the permutation one to be superior.

Quantifying Achievable Levels of Improvement in Knee Joint Biomechanics During Gait After Total Knee Arthroplasty Relative to Osteoarthritis Severity

2020 ◽  
pp. 1-9
Author(s):  
Jereme B. Outerleys ◽  
Michael J. Dunbar ◽  
Glen Richardson ◽  
Cheryl L. Hubley-Kozey ◽  
Janie L. Astephen Wilson
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Frontal Plane ◽  
Knee Adduction Moment ◽  
Patient Specific ◽  
Knee Biomechanics ◽  
Knee Oa ◽  
Joint Biomechanics ◽  
Total Knee

Total knee arthroplasty (TKA) surgery improves knee joint kinematics and kinetics during gait for most patients, but a lack of evidence exists for the level and incidence of improvement that is achieved. The objective of this study was to quantify patient-specific improvements in knee biomechanics relative to osteoarthritis (OA) severity levels. Seventy-two patients underwent 3-dimensional (3D) gait analysis before and 1 year after TKA surgery, as well as 72 asymptomatic adults and 72 with moderate knee OA. A combination of principal component analysis and discriminant analyses were used to categorize knee joint biomechanics for patients before and after surgery relative to asymptomatic, moderate, and severe OA. Post-TKA, 63% were categorized with knee biomechanics consistent with moderate OA, 29% with severe OA, and 8% asymptomatic. The magnitude and pattern of the knee adduction moment and angle (frontal plane features) were the most significant contributors in discriminating between pre-TKA and post-TKA knee biomechanics. Standard of care TKA improves knee biomechanics during gait to levels most consistent with moderate knee OA and predominately targets frontal plane features. These results provide evidence for the level of improvement in knee biomechanics that can be expected following surgery and highlight the biomechanics most targeted by surgery.

Deficient knee joint biomechanics in bilateral jumping after anterior cruciate ligament reconstruction

2020 ◽  
Vol 77 ◽  
pp. 105048
Author(s):  
Frieder Cornelius Krafft ◽  
Bernd Josef Stetter ◽  
Thorsten Stein ◽  
Andree Ellermann ◽  
Johannes Flechtenmacher ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Knee Joint ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Cruciate Ligament Reconstruction ◽  
Joint Biomechanics ◽  
Anterior Cruciate ◽  
Deficient Knee

scholarly journals Changes in knee joint biomechanics following balance and technique training and a season of Australian football

2012 ◽  
Vol 46 (13) ◽  
pp. 917-922 ◽  
Author(s):  
Cyril J Donnelly ◽  
Bruce C Elliott ◽  
Tim L A Doyle ◽  
Caroline F Finch ◽  
Alasdair R Dempsey ◽  
...  
Keyword(s):  
Knee Joint ◽  
Joint Biomechanics ◽  
Australian Football
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