A Study on the Design of the Keel in the Energy Storing Prosthetic Foot Using the Finite Element Analysis and the Taguchi Method

유한요소해석과 다구찌방법을 이용한 에너지 저장형 의족용골의 설계에 관한 연구

Lee, Dong-Hui;Jang, Tae-Seong;Lee, Jeong-Ju;Yun, Yong-San

  • Published : 2000.03.01


In this study, new design method of prosthetic foot was suggested which can evaluate the performance of prosthetic foot by implementing amputee's gait simulation using the finite element analysis. The basic shape of ESPF(Energy Storing Prosthetic Foot) was designed which is suitable for the below-knee amputee considering mechanical properties and kinematic properties. And, the performance evaluations were performed using the Taguchi method with orthogonal array L25. As a result, average main effect of factors for the ESPF's performance were calculated and then optimum condition of given shape was selected. Essential particulars for the performance evaluation from the simulation result were the quantity of external work needed in stance phase, the quantity of transferred energy from the ESPF through the knee, and the vertical displacement of knee at toe-off. Reasonable optimum condition was obtained from the using performance index. From this study, it was found that it is necessary for the design of ESPF to consider the geometrical data related to the magnitude of load on elastic material.


Energy Storing Prosthetic Foot;Finite Element Analysis;Taguchi Method


  1. 박성현, 1990, 응용실험계획, 영지문화사
  2. Roy, R., 1990, A Primer on the Taguchi Method, Van Nostrand Reinhold
  3. Winter, D.A., 1979, Biomechanics of Human Movement, John Wiley & Sons
  4. Leone, D.J., 1987, 'A Structural Model for Molded Thermoplastic Ankle-Foot Orthoses,' Transactions of the ASME-Journal of Biomechanical Engineering, Vol. 109, pp. 305-310
  5. Lehmann, J.F., Price, R., Boswell-Bessette, S., Dralle, A., and Questad, K., 1993, 'Comprehensive Analysis of Dynamic Elastic Response Feet: Seattle Ankle/Lite Foot Versus SACH foot,' Archives of Physical Medicine Rehabilitation, Vol. 74, pp. 853-861
  6. Postema, K., Hermens, H.J., Vries, J.D., Koopman, H.F.J.M., and Eisma, W.H., 1997, 'Energy Storage and Release of Prosthetic Feet Part 1: Biomechanical Analysis Related to User Benefits,' Prosthetics and Orthotics International, Vol. 21, pp. 17-27
  7. Allard, P., Trudeau, F., Prince, F., Dansereau, J., Labelle, H., and Duhaime, M., 1995, 'Modelling and Gait Evaluation of Asymmetrical-keel Foot Prosthesis,' Medical and Biological Engineering and Computation, Vol. 33, pp. 2-7
  8. 김동환, 김동진, 고대철, 김병민, 최재찬, 1998,'?遍봉?고려한 다단계 금속성형공정의 예비 성형체 설계방법: 다구찌방법을 이용한 신경망 의 적용,' 대한기계학회논문집 A권, Vol. 22, No. 9, pp. 1615-1624
  9. Winter, D.A. and Sienko, S.E., 1988, 'Biomechanics of Below Knee Amputee Gait,' Journal of Biomechanics, Vol. 21, pp. 361-367
  10. Ehara, Y., Beppu, M., Nomura, S., Kumini, Y., and Takahashi, S., 1993, 'Energy Storing Property of So-called Energy-storing Prosthetic Feet,' Archives of Physical Medicine and Rehabilitation, Vol. 74, pp. 68-72
  11. Czerniecki, J.M., Gitter, A., and Munro, C, 1991, 'Joint Moment and Muscle Power Output Characteristics of Below Knee Amputees During Running: The Influence of Energy Storing Prosthetic Feet,' Journal of Biomechanics, Vol. 24, pp. 63-75
  12. Phillips, V.L., 1985, 'Composite Prosthetic Foot and Leg,' US Patent 4547913
  13. Poggi, D.L., Burgess, E.M., Moeller, D.E., and Hittenberger, D.A., 1987, 'Prosthetic Foot Having a Cantilever Spring Keel,' US Patent 4645509