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Summary:mean distance/ range of distances between the ischialtuberosities

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  • Summary:mean distance/ range of distances between the ischialtuberosities

    Below a summary of responses to the question I posted a few weeks ago
    on mean distance/ range of distances between the ischial tuberosities. I
    would like to thank all of you who responded. Following the question I asked
    with the replies

    Dear all,

    does anyone know if there is some information available regarding the mean
    distance/ range of distances between the ischial tuberosities
    in a seated position? Ideally I am looking for some anthropometric
    tables of the German/European population.
    I would be very appreciative if any of you could give me
    advice, suggestions or references regarding this problem
    Thank you for your time and consideration in advance

    Sonja Hermann, MSc

    JOHN ROEBUCK wrote

    I can not think of any such specialized information document at this time,
    but I bet there are more than one that deal with the sitting
    pressures. However, I think that most of the technical articles I have
    on the subject have a grand sample size of one! They are only
    feasibility studies.

    In the meantime, I suggest that you use an estimate for the mean of .25
    times the Bitrochanteric Breadth (Hip Breadth, standing) for the
    populations you have in mind. The standard deviation would probably be
    close to .25 times that of the standard deviation for the Bitrochanteric
    Breadth, though perhaps less because of the absence of fatty tissue in
    the bones.

    John Roebuck, MS
    Anthropometry Consultant
    Roebuck Research and Consulting

    Kath Bogie wrote

    2 older references on European wheelchair users
    which may contain the dimensions are:

    Fenwick D. Wheelchairs and their users.
    Office of Population Censuses and Surveys. Social Survey Division, HMSO,
    Seating for elderly and disabled people.
    Inst. Consumer Ergonomics, University of Technology, Loughborough, 1983.

    You may also want to try contacting the ICE directly to see if they can
    help you:
    ICE Ergonomics, Holywell Building, Holywell Way, Loughborough, LE11 3UZ
    Tel: +44 (0) 1509 283300
    Fax: +44 (0) 1509 283360

    Kim Burton wrote

    You should find the info in a PC program called PeopleSize from

    Kim Burton
    Editor-in-Chief, Clinical Biomechanics
    Spinal Research Unit
    University of Huddersfield
    30 Queen Street
    HD1 2SP, UK
    Voice +44 1484 535200\human+health/research/sru/sru.html

    Graham Coleman wrote

    Try PeopleSize Software (
    It gives the distance between inner edges of the ischial tuberosities
    and their width.

    Graham Coleman

    Graham Coleman Associates
    Ergonomics Consultancy.


    There is some anthro data on ITs in the new publications by the UK
    Department of Trade and Industry. Contact Paul Hale at Data for several different populations are available.


    Jeff Lewin
    Sr. Human Factors/Ergonomics Engineer
    Seagate Technology

    You can try the book titled "Bodyspace-- Anthropometry, Ergonomics and
    Design", Author: Stephen Pheasant, published by Taylor & Francis, 1986,
    Reprinted 1988, 1990, 1992, 1994.

    Yu Li (Ph.D)
    Department of Anatomy
    Bristol University

    I don't know whether you have your answer yet, but in 'Adultdata', which is
    produced by the Department of Trade and Industry here in the UK, I found:

    UK, male, mean (SD) 117.9 (11.3), 5th / 95th %tile: 99.4 / 136.5, female
    129.4 (10.1) 112.7 / 146.1
    USA, male 118.3 (11.4) 99.5 / 137.1, female 129.9 (11.1) 111.7 /
    The booke quotes as its source "PeopleSize 1998", which is a
    More info on that at

    Hope this helps,
    Jan Herman Kuiper


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