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gmberke61
05-23-2008, 01:51 AM
Mr. Nigg

The one thing that seems to be missing in your (hopefully tongue-in-cheek)
request is the human/machine interface called a prosthetic socket. This is
always custom made, usually by hand and creates an entire new set of issues
that the biomechanics community, as far as I have read, has failed to
acknowledge.

No matter how well this section of the device is made, there will always be
motion between the bones, soft tissues and socket materials, creating a
pseudo-arthrosis, making it very difficult to calculate and standardize its
impact on human performance. Anatomy, Body morphology, surgical procedure,
cause limb loss and other human pathology will all have a significant impact
on the ability to disperse and control the forces of walking and running
irrespective of what ever technology is placed on the end of the prosthesis.


By assuming that a prosthesis is merely a series of parts, is inaccurate,
inappropriate and virtually ignores the most important variable which is the
safe, comfortable and functional interface between a portion of the human
limb that changes continuously, and a piece of plastic.

Kudos to Mr. Pistorius for his human achievements.

Gary M. Berke MS, CP, FAAOP
Certified Prosthetist
Adjunct Clinical Instructor, Orthopaedic Surgery Stanford University

-----Original Message-----
From: * Biomechanics and Movement Science listserver
[mailto:BIOMCH-L@NIC.SURFNET.NL] On Behalf Of Benno Nigg
Sent: Wednesday, May 21, 2008 8:37 AM
To: BIOMCH-L@NIC.SURFNET.NL
Subject: [BIOMCH-L] Oscar Pistorius allowed to compete in regular Olympic
Games after all

I would like to challenge the biomechanics community to develop prostheses
that will produce world records in many track and field disciplines. It
should not be too difficult,

Benno M. Nigg
University of Calgary
Faculty of Kinesiology
Human Performance Laboratory
2500 University Drive NW
Calgary, AB, Canada T2N 1N4
Direct: 403-220-3436
Fax: 403-284-3553
Email: nigg @ucalgary.ca



-----Original Message-----

From: * Biomechanics and Movement Science listserver [
mailto:BIOMCH-L@NIC.SURFNET.NL] On Behalf
Of Richard Hinrichs

Sent: Friday, May 16, 2008 10:24 AM

To: BIOMCH-L@NIC.SURFNET.NL

Subject: [BIOMCH-L] Oscar Pistorius allowed to compete in regular Olympic
Games after all

On this forum we have discussed the pros and cons of double amputee Oscar
Pistorius and whether he would have an advantage in the Olympics.

Well he has won his appeal and will now be allowed to compete in 2008
Olympics after all. Here is the link:


http://sports.espn.go.com/oly/trackandfield/news/story?id=3398915

Regards,

--Rick

Richard N. Hinrichs, Ph.D.

Dept. of Kinesiology

Arizona State University

P.O. Box 870404

Tempe, AZ 85287-0404

(1) 480-965-1624 (office)

(1) 480-965-8108 (fax)

hinrichs@asu.edu (email)

www.public.asu.edu/~hinrichs
(web)

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