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Dear Readers,
We are conducting a study of individuals covering the period of their lives
when they go through the transition from working to retirement. One
variable we are looking at is joint range of motion in the lower extremity,
and specifically the end of range data at these joints.
We are using electrogoniometers (Biometrics) to measure the end points. We
think we have a reproducible method for obtaining accurate end of range data
at the ankle and knee but the hip is proving to be a problem. We feel that
this is largely due to the fact that the movement of soft tissue around the
pelvis does not correlate all that well with the movement of the underlying
bones. This is compounded by the fact that some older volunteers can be
uncomfortable with disrobing in order for us to get the best measurements
possible. A lot of the literature on range of motion only reports data, but
not how this problem was dealt with (if at all).
I suppose this is not a problem unique to electrogoniometry - virtually all
motion analysis systems utilise skin-mounted markers, which in some
instances move quite differently from the underlying bony structures.
We are wondering if anyone has any suggestions for us. As usual, we will
publish a précis of responses received. Thank you for your attention.
Cheers,
Drew Smith, PhD
Senior Research Fellow
Human Movement Laboratory
School of Health Professions
University of Brighton
49 Darley Road
Eastbourne BN20 7UR
United Kingdom
Telephone: (01273) 643 457 Int'l: +44 1273 643457
Laboratory: (01273) 643 767 Int'l: +44 1273 643767
Fax: (01273) 643 944 Int'l: +44 1273 643944
E-Mail: A.W.Smith@brighton.ac.uk
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We are conducting a study of individuals covering the period of their lives
when they go through the transition from working to retirement. One
variable we are looking at is joint range of motion in the lower extremity,
and specifically the end of range data at these joints.
We are using electrogoniometers (Biometrics) to measure the end points. We
think we have a reproducible method for obtaining accurate end of range data
at the ankle and knee but the hip is proving to be a problem. We feel that
this is largely due to the fact that the movement of soft tissue around the
pelvis does not correlate all that well with the movement of the underlying
bones. This is compounded by the fact that some older volunteers can be
uncomfortable with disrobing in order for us to get the best measurements
possible. A lot of the literature on range of motion only reports data, but
not how this problem was dealt with (if at all).
I suppose this is not a problem unique to electrogoniometry - virtually all
motion analysis systems utilise skin-mounted markers, which in some
instances move quite differently from the underlying bony structures.
We are wondering if anyone has any suggestions for us. As usual, we will
publish a précis of responses received. Thank you for your attention.
Cheers,
Drew Smith, PhD
Senior Research Fellow
Human Movement Laboratory
School of Health Professions
University of Brighton
49 Darley Road
Eastbourne BN20 7UR
United Kingdom
Telephone: (01273) 643 457 Int'l: +44 1273 643457
Laboratory: (01273) 643 767 Int'l: +44 1273 643767
Fax: (01273) 643 944 Int'l: +44 1273 643944
E-Mail: A.W.Smith@brighton.ac.uk
---------------------------------------------------------------
To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
For information and archives: http://isb.ri.ccf.org/biomch-l
---------------------------------------------------------------