Prosthetics socket that incorporates an air splint system focusing on dynamic interface pressure

Calibration problems encountered while monitoring stump/socket interface pressures with force sensing resistors: techniques adopted to minimise inaccuracies.

Force sensing resistors (FSR) have been used to measure dynamic pressures at the interface between appliance and patient. Inaccuracies using FSRs have been reported. This paper summarises both the calibration problems encountered and the techniques adopted to minimise inaccuracies. It is considered that, by calibrating the transducers attached to the socket, and by adopting a strict test protoc...

Dynamic pressure measurements at the interface between residual limb and socket--the relationship between pressure distribution, comfort, and brim shape.

A comparison between the dimensions of positive transtibial residual limb molds prepared by air pressure casting and weight-bearing casting methods

Background: Creating a socket with proper fit is an important factor to ensure the comfort and control of prosthetic devices. Several techniques are commonly used to cast transtibial stumps but their effect on stump shape deformation is not well understood. This study compares the dimensions, circumferences and volumes of the positive casts and also the socket comfort between two casting method...

A new method for the measurement of normal pressure between amputation residual limb and socket.

Present address : Orthopaedic Workshop "Anna Kliniek", Mezenstraat 2, 2333 Leiden, the Netherlands. b Present address : Prins Frisolaan 20, 7242 GZ Lochem, the Netherlands. « Laoummimsveuuovs, unxmrsn~ pa,/s xx INTRODUCTION The measurement of normal pressures at an interface is a universal problem in prosthetics (1, 2, 3). One difficulty is that the existing pressure pattern is disturbed by the...

Relationship between socket pressure and EMG of two muscles in trans-femoral stumps during gait.

The biomechanical interaction between the leg stump and the prosthetic socket is critical in achieving close-to-normal ambulation. Although many investigations have been performed to understand the biomechanics of trans-tibial sockets, few studies have measured the socket interface pressure for transfemoral amputees. Furthermore, no report has examined how the residual muscle activities in the ...