Finite element analysis of the contact interface between trans-femoral stump and prosthetic socket

Transfemoral amputees need prosthetic devices after amputation surgery, and the interface pressure between the residual limb and prosthetic socket has a significant effect on an amputee's satisfaction and comfort. The purpose of this study was to build a nonlinear finite element model to investigate the interface pressure between the above-knee residual limb and its prosthetic socket. The model was three-dimensional (3D) with consideration of nonlinear boundary conditions. Contact analysis was used to simulate the friction conditions between skin and the socket. The normal stresses up to 80.57 kPa at the distal end of the soft tissue. The longitudinal and circumferential shear stress distributions at the limb-socket interface were also simulated. This study explores the influences of load transfer between trans-femoral residual limb and its prosthetic socket.

[1]  Akio Nakagawa,et al.  Identification of pressure distribution at the socket interface of an above-knee prosthesis , 1997 .

[2]  Chih-Han Chang,et al.  Effects of liner stiffness for trans-tibial prosthesis: a finite element contact model. , 2004, Medical engineering & physics.

[3]  Xiaohong Jia,et al.  Finite element modeling of the contact interface between trans-tibial residual limb and prosthetic socket. , 2004, Medical engineering & physics.

[4]  Liu Zhi-cheng.  Finite element analysis of interface pressure over the above-knee residual limb at mid stance with pre-stress , 2011 .

[5]  Damien Lacroix,et al.  Finite Element Analysis of Donning Procedure of a Prosthetic Transfemoral Socket , 2011, Annals of Biomedical Engineering.

[6]  M Zhang,et al.  A finite element analysis of the load transfer between an above-knee residual limb and its prosthetic socket--roles of interface friction and distal-end boundary conditions. , 1996, IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society.

[7]  A Gefen,et al.  Patient-specific analyses of deep tissue loads post transtibial amputation in residual limbs of multiple prosthetic users. , 2009, Journal of biomechanics.

[8]  I McCurdie,et al.  ICEROSS — a consensus view: A questionnaire survey of the use of ICEROSS in the United Kingdom , 1997, Prosthetics and orthotics international.

[9]  Ming Zhang,et al.  Using computational simulation to aid in the prediction of socket fit: a preliminary study. , 2007, Medical engineering & physics.

[10]  V. C. Roberts,et al.  Clinical investigation of the pressure and shear stress on the trans-tibial stump with a prosthesis. , 1998, Medical engineering & physics.

[11]  Noor Azuan Abu Osman,et al.  An experimental study of the interface pressure profile during level walking of a new suspension system for lower limb amputees. , 2013, Clinical biomechanics.

[12]  Sheridan Laing,et al.  Engineering a trans-tibial prosthetic socket for the lower limb amputee. , 2011, Annals of the Academy of Medicine, Singapore.

[13]  D S Childress,et al.  A review of prosthetic interface stress investigations. , 1996, Journal of rehabilitation research and development.

[14]  A W Buis,et al.  Socket/stump interface dynamic pressure distributions recorded during the prosthetic stance phase of gait of a trans-tibial amputee wearing a hydrocast socket , 1999, Prosthetics and orthotics international.

[15]  J P Paul.  Comparison of computational analysis with clinical measurement of stresses on a below-knee residual limb in a prosthetic socket [Medical Engineering & Physics 22 (2000):607-12]. , 2001, Medical engineering & physics.

[16]  P. Naylor.  THE SKIN SURFACE AND FRICTION. , 1955, The British journal of dermatology.

[17]  P K Commean,et al.  Finite element modeling and experimental verification of lower extremity shape change under load. , 1997, Journal of biomechanics.

[18]  T A Krouskop,et al.  Noninvasive measurement of the stiffness of tissue in the above-knee amputation limb. , 1989, Journal of rehabilitation research and development.

[19]  A. Gefen,et al.  Internal mechanical conditions in the soft tissues of a residual limb of a trans-tibial amputee. , 2008, Journal of biomechanics.

[20]  I. Siev-Ner,et al.  Surgical and Morphological Factors that Affect Internal Mechanical Loads in Soft Tissues of the Transtibial Residuum , 2009, Annals of Biomedical Engineering.

[21]  S G Zachariah,et al.  Finite element estimates of interface stress in the trans-tibial prosthesis using gap elements are different from those using automated contact. , 2000, Journal of biomechanics.