Browse > Article

A Biomechanical Modeling of Human Pharyngeal Muscular Dysfunction by Using FEM(Finite Element Method)  

Kim Sung Jae (School of Biomedical Engineering College of Medicine Konkuk University)
Bae Ha Suk (Dept. of Rehabilitation Medicine, College of Medicine Yonsei University)
Choi Byeong Cheol (Dept. of Biomedical Engineering, Choonhae College)
Kim Sung Min (School of Biomedical Engineering College of Medicine Konkuk University)
Publication Information
Journal of Biomedical Engineering Research / v.24, no.6, 2003 , pp. 515-522 More about this Journal
Abstract
Pharynx is a system transporting foods by peristaltic motion(contraction and expansion movement! into the esophagus and functioning as airway passages. In this study, structural changes of pharyngeal dysfunction are analyzed by biomechanical model using CT and FEM(finite clement method). Loading condition was assumed that equal pressure was loaded sequentially to inside of pharyngeal tissue. In order to analyze the pharyngeal muscular dysfunction by biomechanical model. the pharyngeal dysfunctions was classified into 3 cases. Taking into account the clinical complication by neuromuscular symptoms such as pharyngeal dysfunction after stroke. we assumed that a change of material property is caused by muscular tissue stiffness. A deformation of cross sectional area of the pharynx is analyzed increasing the stiffness $25\%,\;50\%,\;75\%$ in each case on the basis of stress-strain relationship. Based on three-dimensional reconstruction of pharyngeal structure using limited factor - techniques and the optimization procedure by means of inverse dynamic approach. the biomechanical model of the human pharynx is implemented. The results may be used as clinical index illustrating the degree of pharyngeal muscular dysfunction. This study may be used as useful diagnostic model in discovering early deglutitory impediment caused by physiological or pathological pharyngeal dysfunction.
Keywords
Dysphagia; Pharynx; Muscular Dysfunction; FEM;
Citations & Related Records
연도 인용수 순위
  • Reference
1 FMS. McConnel, 'Analysis of pressure generation and bolus transit during pharngeal swallowing'. Laryngoscope, Vol. 98, pp. 71 78, 1988
2 Gordon C, Hewer RL, Wade DT, 'Dysphagia in acute stroke', Br Med J vol. 295, pp. 411 414
3 Kim SM, McCllouc and TM, Rim K., 'Evaluation of the Viscoelastic Properties of Pharyngeal Tissue', Tissue Eng, Vol. 4, No. 4, pp. 393-398, 1998
4 P.J. Kahrilas, J. Chen and J.A. Logemann, 'Three-dimensional modeling of the Oropharynx during swallowing.', Radiology, Vol. 194, pp. 575-579, 1995
5 EM. Sokol, P. Heitmann, BS. Wolf and BR. Cohen, 'Simultaneous cineradiographic and manometric study of the pharynx.', hypopharynx and cervical esophagus. Gastroenterology, Vol. 51, pp. 960-974, 1966
6 P. Pouderoux, P. J. Kahrilas, 'Deglutive tongue force modulation by volition, volume, and viscosity in humans.', Gastroenterology, Vol. 108 pp. 1418-1426, 1995
7 Brasseur JG and Dodds WJ. 'Interpretation of intraluminal manometric measurements In terms of swallowing mechanics', Dysphagia, Vol. 6, pp. 100-119, 1991
8 P. Pouderoux, P.J. Kahrilas, 'Deglutive tongue force modulation by volition, volume, and viscosity in humans.', Gastroenterology, Vol. 108 pp. 1418-1426, 1995
9 Kim SM, McCulloch TM and Lim K., 'Pharyngeal pressure analysis by the finite element method during liquid bolus swallow', Ann Otol Rhinol Laryngol, Vol. 109, No. 6, pp. 585-589, 2000   DOI   PUBMED
10 J.L.Elliltt, 'Swallowing disorders in the elderly', Ge riatrics, vol. 43, pp. 95 113, 1988
11 P.J. Kahrilas, J. Chen and J.A. Logemann, 'Oropharyngeal Accommodation to swallow volume.', Gastroenterology, 1996
12 Kahrilas, P.J., Logemann, J.A. and Gibbons, P., Food intake by maneuver; an extreme compensation for impaired swallowing, Dysphagia, Vol. 5, pp. 155-160, 1992
13 DJ. Curtis, DF. Cruess and AH. Dachman, 'Normal erect swallowing. Normal function and incidence of variations.', Invest Radiol, Vol. 20, pp. 717-726, 1985
14 Finestone HM, Greene Finestone LS, Wilson ES, Teasell RW, 'Malnutrition in stroke patients on the rehabilitation service and at follow up:prevalence and predictors'. Arch Phys Med Rehabil Vol. 76, pp. 310 316, 1995