scholarly journals Numerical modeling to analysis the abrasion of knee joint by walking pattern

2017 ◽  
Vol 19 (5) ◽  
pp. 3875-3882
Author(s):  
Hong Seok Lim ◽  
Dae Eun Moon ◽  
Sung Min Kim
Keyword(s):  
Numerical Modeling ◽  
Knee Joint ◽  
Walking Pattern

Human knee joint walking pattern generation using computational intelligence techniques

2018 ◽  
Vol 30 (6) ◽  
pp. 1701-1713 ◽  
Author(s):  
João P. Ferreira ◽  
Alexandra Vieira ◽  
Paulo Ferreira ◽  
Manuel Crisóstomo ◽  
A. Paulo Coimbra
Keyword(s):  
Knee Joint ◽  
Computational Intelligence ◽  
Pattern Generation ◽  
Human Knee ◽  
Walking Pattern ◽  
Human Knee Joint ◽  
Walking Pattern Generation

Effect of walking pattern in knee joint simulator test

2002 ◽  
Vol 2002.14 (0) ◽  
pp. 67-68
Author(s):  
Takatoshi HORIKAWA ◽  
Teruo MURAKAMI ◽  
Yoshinori SAWAE
Keyword(s):  
Knee Joint ◽  
Walking Pattern ◽  
Simulator Test

scholarly journals Numerical Modeling of Shockwave Treatment of Knee Joint

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7678
Author(s):  
Galina Eremina ◽  
Alexey Smolin
Keyword(s):  
Numerical Modeling ◽  
Knee Joint ◽  
Fluid Pressure ◽  
Threshold Value ◽  
Optimal Level ◽  
Acoustic Stimulation ◽  
Compressive Stresses ◽  
Computer Aided ◽  
Energy Flux Density ◽  
Shockwave Loading

Arthritis is a degenerative disease that primarily affects the cartilage and meniscus of the knee joint. External acoustic stimulation is used to treat this disease. This article presents a numerical model of the knee joint aimed at the computer-aided study of the regenerative effects of shockwave treatment. The presented model was verified and validated. A numerical analysis of the conditions for the regeneration of the tissues of the knee joint under shockwave action was conducted. The results allow us to conclude that to obtain the conditions required for the regeneration of cartilage tissues and meniscus (compressive stresses above the threshold value of 0.15 MPa to start the process of chondrogenesis; distortional strains above the threshold value of 0.05% characterized by the beginning of the differentiation of the tissues in large volumes; fluid pressure corresponding to the optimal level of 68 kPa to transfer tissue cells in large volumes), the energy flux density of therapeutic shockwave loading should exceed 0.3 mJ/mm2.

Effects of Osmium Tetroxide on the Rabbit Knee Joint Normal Synovial Membrane

1987 ◽  
Vol 16 (1) ◽  
pp. 121-129
Author(s):  
M. Möttönen ◽  
M. Pantio ◽  
T. Nevalainen
Keyword(s):  
Knee Joint ◽  
Synovial Membrane ◽  
Osmium Tetroxide ◽  
Rabbit Knee

Radiation synovectomy of the knee joint

2006 ◽  
Vol 45 (01) ◽  
pp. 57-61
Author(s):  
M. Puille ◽  
D. Steiner ◽  
R. Bauer ◽  
R. Klett
Keyword(s):  
Knee Joint ◽  
Lymph Nodes ◽  
Geometric Mean ◽  
Radiation Synovectomy ◽  
Real Activity ◽  
Anterior View ◽  
Inguinal Lymph Nodes ◽  
The Real ◽  
Therapeutic Modalities ◽  
Real Value

Summary Aim: Multiple procedures for the quantification of activity leakage in radiation synovectomy of the knee joint have been described in the literature. We compared these procedures considering the real conditions of dispersion and absorption using a corpse phantom. Methods: We simulated different distributions of the activity in the knee joint and a different extra-articular spread into the inguinal lymph nodes. The activity was measured with a gammacamera. Activity leakage was calculated by measuring the retention in the knee joint only using an anterior view, using the geometric mean of anterior and posterior views, or using the sum of anterior and posterior views. The same procedures were used to quantify the activity leakage by measuring the activity spread into the inguinal lymph nodes. In addition, the influence of scattered rays was evaluated. Results: For several procedures we found an excellent association with the real activity leakage, shown by an r² between 0.97 and 0.98. When the real value of the leakage is needed, e. g. in dosimetric studies, simultaneously measuring of knee activity and activity in the inguinal lymph nodes in anterior and posterior views and calculation of the geometric mean with exclusion of the scatter rays was found to be the procedure of choice. Conclusion: When measuring of activity leakage is used for dosimetric calculations, the above-described procedure should be used. When the real value of the leakage is not necessary, e. g. for comparing different therapeutic modalities, several of the procedures can be considered as being equivalent.

Load-Bearing in the Ovine Medial Tibial Condyle: Effect of Meniscectomy

1993 ◽  
Vol 06 (02) ◽  
pp. 100-104 ◽  
Author(s):  
D. M. Pickles ◽  
C. R. Bellenger
Keyword(s):  
Knee Joint ◽  
Contact Area ◽  
Mammalian Species ◽  
Total Removal ◽  
Load Bearing ◽  
Human Knee ◽  
Biochemical Effects ◽  
Pressure Sensitive ◽  
Medial Meniscectomy ◽  
Tibial Condyle

SummaryTotal removal of a knee joint meniscus is followed by osteoarthritis in many mammalian species. Altered load-bearing has been observed in the human knee following meniscectomy but less is known about biochemical effects of meniscectomy in other species. Using pressure sensitive paper in sheep knee (stifle) joints it was found that, for comparable loads, the load-bearing area on the medial tibial condyle was significantly reduced following medial meniscectomy. Also, for loads of between 50 N and 500 N applied to the whole joint, the slope of the regression of contact area against load was much smaller. Following medial meniscectomy, the ability to increase contact area as load increased was markedly reduced.The load bearing area on the medial tibial condyle was reduced following meniscectomy.

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