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Sliding-rolling ratio during deep squat with regard to different knee prostheses

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Abstract
The sliding-rolling ratio between the femoral and tibial condyles throughout the active functional arc of the knee (20-120 degrees of flexion angle) is currently unknown. Since wear is the most determining lifetime factor of the current total knee replacements, the presence of sliding-rolling cannot be neglected. The reason lies in the fact that this phenomenon causes different material abrasion compared to pure sliding or rolling alone. Only a limited amount of studies have dealt with this question related to the condyles of the knee prostheses, most of them by means of experimental tests and only in the segment where the motion begins (0 to 20-30 degrees). The primary aim of this paper is to investigate how the sliding-rolling ratio changes between the condyles of five different knee prostheses in the functional arc of the knee (20-120 degrees) as a function of flexion angle. For the analysis, five prosthesis models with identical boundary conditions have been constituted and numerical simulations were carried out using the MSC.ADAMS program system. Beside the sliding-rolling ratio, the normal and friction force between the connecting surfaces has also been calculated as a function of flexion angle.
Keywords
contact forces, sliding-rolling ratio, deep squat, knee prostheses

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Chicago
Fekete, Gusztáv, Patrick De Baets, Magd Abdel Wahab, Béla Csizmadia, Gábor Katona, Libardo Vanegas-Useche, and José Alfredo Solanilla. 2012. “Sliding-rolling Ratio During Deep Squat with Regard to Different Knee Prostheses.” Acta Polytechnica Hungarica 9 (5): 5–24.
APA
Fekete, G., De Baets, P., Abdel Wahab, M., Csizmadia, B., Katona, G., Vanegas-Useche, L., & Alfredo Solanilla, J. (2012). Sliding-rolling ratio during deep squat with regard to different knee prostheses. ACTA POLYTECHNICA HUNGARICA, 9(5), 5–24.
Vancouver
1.
Fekete G, De Baets P, Abdel Wahab M, Csizmadia B, Katona G, Vanegas-Useche L, et al. Sliding-rolling ratio during deep squat with regard to different knee prostheses. ACTA POLYTECHNICA HUNGARICA. 2012;9(5):5–24.
MLA
Fekete, Gusztáv, Patrick De Baets, Magd Abdel Wahab, et al. “Sliding-rolling Ratio During Deep Squat with Regard to Different Knee Prostheses.” ACTA POLYTECHNICA HUNGARICA 9.5 (2012): 5–24. Print.
@article{3068021,
  abstract     = {The sliding-rolling ratio between the femoral and tibial condyles throughout the active functional arc of the knee (20-120 degrees of flexion angle) is currently unknown. Since wear is the most determining lifetime factor of the current total knee replacements, the presence of sliding-rolling cannot be neglected. The reason lies in the fact that this phenomenon causes different material abrasion compared to pure sliding or rolling alone. Only a limited amount of studies have dealt with this question related to the condyles of the knee prostheses, most of them by means of experimental tests and only in the segment where the motion begins (0 to 20-30 degrees). The primary aim of this paper is to investigate how the sliding-rolling ratio changes between the condyles of five different knee prostheses in the functional arc of the knee (20-120 degrees) as a function of flexion angle. For the analysis, five prosthesis models with identical boundary conditions have been constituted and numerical simulations were carried out using the MSC.ADAMS program system. Beside the sliding-rolling ratio, the normal and friction force between the connecting surfaces has also been calculated as a function of flexion angle.},
  author       = {Fekete, Guszt{\'a}v and De Baets, Patrick and Abdel Wahab, Magd and Csizmadia, B{\'e}la and Katona, G{\'a}bor and Vanegas-Useche, Libardo and Alfredo Solanilla, Jos{\'e}},
  issn         = {1785-8860},
  journal      = {ACTA POLYTECHNICA HUNGARICA},
  keyword      = {contact forces,sliding-rolling ratio,deep squat,knee prostheses},
  language     = {eng},
  number       = {5},
  pages        = {5--24},
  title        = {Sliding-rolling ratio during deep squat with regard to different knee prostheses},
  volume       = {9},
  year         = {2012},
}

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