No announcement yet.

Re: replies to : how to define upper limb technical array?

This topic is closed.
  • Filter
  • Time
  • Show
Clear All
new posts

  • Re: replies to : how to define upper limb technical array?

    Please note that I misinterpreted the work of Liduin Meershoek in my
    recent summary note...
    Liduin's work did mount markers on a rigid base, similar to that
    described by J. Williams (markers on raised pins), only using velcro and
    elastic bandage to secure that base.
    He goes on to point out that flexible arrays would be susceptible to
    variations in skin movement, leading to analysis difficulties compared
    with a rigid array.
    See below...
    Nancy Black __|~_)_I__)_|~_
    Ecole de genie )_ __)_|_)__ __)
    Universite de Moncton | )____) | EMAIL:
    Moncton, New Brunswick \\___|____|____|____// FAX: (506) 858-4082
    E1A 3E9 CANADA \\ // PHONE: (506) 858-4079
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    I doubt whether flexible arrays are better. You will end up with a lot of
    deformation since skin displacement is different everywere. This will
    especially hold for pronation and supination movements. It will be difficult
    to interpretate the deformations and calculate joint angles. But maybe you
    only hide these effects with rigid arrays. You will not see any deformation
    but you will never know whether there is any movement between the bone and
    the array. Personally I think that the displacement of a properly attached
    array will be less compared with skin markers.

    Liduin Meershoek
    Vakgroep Functionele Morfologie
    Faculteit Diergeneeskunde
    Universiteit Utrecht
    Yalelaan 1
    3584 CL Utrecht
    the Netherlands
    tel. 030-2534324