Pressure Distribution in Transtibial Prostheses Socket and the Stump Interface

Abstract The paper deals with the problem of a biomechanical solution for human locomotion after amputation of a lower limb. With an inappropriately designed transtibial prostheses socket, the interaction between the socket and the stump occurs, leading to increased friction and subsequent surface damage to the soft tissue. In individual types of transtibial prostheses, locations are defined which can be loaded and which cannot be loaded. On the basis of the study of the anterior side of the stump, three loadable and two non-loadable areas were monitored using the TACTILUS tactile pressure sensor (Sensor Products Inc., Madison, New Jersey, USA). Methods of measuring individual values were proposed for the purpose of sensing the pressure in the socket and the liner interface, the stump and the liner interface. Each method includes the methodological preparation of the patient, the preparation of the room, the preparation of the measuring system, and the subsequent method of data processing. In the submitted paper, 11 stumps were non-invasively monitored. The method of assessing the pressure exerted on the stumps was focused on the monitoring of the pressure distribution in the selected areas. The results obtained by the pressure measurements were statistically processed. In both cases of the pressure system placement, the p-value was higher than 0.05; therefore, we can state that the sets are equal.

[1]  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.

[2]  R. Gailey,et al.  Review of secondary physical conditions associated with lower-limb amputation and long-term prosthesis use. , 2008, Journal of rehabilitation research and development.

[3]  Ming Zhang,et al.  Pressure distribution at the stump/socket interface in transtibial amputees during walking on stairs, slope and non-flat road. , 2006, Clinical Biomechanics.

[4]  H B Skinner,et al.  Analysis of a below-knee patellar tendon-bearing prosthesis: a finite element study. , 1991, Journal of rehabilitation research and development.

[5]  Aft Mak,et al.  State-of-the-art research in lower-limb prosthetic biomechanics-socket interface , 2001 .

[6]  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.

[7]  Mario C Faustini,et al.  Design and analysis of orthogonally compliant features for local contact pressure relief in transtibial prostheses. , 2005, Journal of biomechanical engineering.

[8]  P V S Lee,et al.  Stump/socket pressure profiles of the pressure cast prosthetic socket. , 2003, Clinical biomechanics.

[9]  Angus McFadyen,et al.  Dynamic interface pressure distributions of two transtibial prosthetic socket concepts. , 2009, Journal of rehabilitation research and development.

[10]  S. Wolf,et al.  Pressure characteristics at the stump/socket interface in transtibial amputees using an adaptive prosthetic foot. , 2009, Clinical biomechanics.

[11]  Pil Kang,et al.  Pressure Distribution in Stump/Socket Interface in Response to Socket Flexion Angle Changes in Trans-Tibial Prostheses With Silicone Liner , 2006 .

[12]  Stavros Pissadakis,et al.  Fiber Optic-Based Pressure Sensing Surface for Skin Health Management in Prosthetic and Rehabilitation Interventions , 2012 .

[13]  L. Bednarcikova,et al.  The use of matrix tactile sensors (MTS) for diagnostics of the efficiency of production, testing and application of a trunk orthosis , 2012, 2012 IEEE 13th International Symposium on Computational Intelligence and Informatics (CINTI).