Apparatus for the synchronous measurement of pressure distribution and components of the resulting force under the human footsole
Beierlein, H.R.
Zeitschrift für Orthopadie und ihre Grenzgebiete 115(5): 778-782
1977
ISSN/ISBN: 0044-3220 PMID: 930252 Document Number: 115624
The presented stationary apparatus enables to make measurements of qualitative and quantitative pressure distribution under the barefooted human footsole. With a film camera the pressure distribution is recorded on 35 mm black-and-white negative film with 60 pictures/sec during the unrolling of the foot. With a duration of 0.5 sec at a walking speed of 5 km/h the unrolling is recorded by about 30 separate pictures. Besides the illustration of pressure distribution each of the pictures shows: a pressure comparing unit, the side-view of the unrolling foot, the actual recording time in units of 1/100 sec and statements about the test person. Each of the recorded pictures in then scanned by a black-and-white-TV-camera. By means of electronic hardware coloured isobares of the pressure distribution given by the different foot deformities are computed and shown on a colour monitor screen. By strain gages, the three components of the resulting force (weight) are registered synchronously.