View Full Version : about electrogoniometer replies

Ekin Akalan
11-07-2004, 03:59 PM
There are not many replies came up. I guess I could not get electrogoniometer users' attention.
Here is the message;
Hi there;
We have a gait lab in Istanbul Medical University which has 6 TV
camera, 2
force plate and 8 ch. EMG. Unfortinately we have difficulties
sometimes to
track the markers for little guys(like children who 2- 3 years of age)
also the system that we use allow only lower extremity and Trunk motion
analysis. So to obtain kinematic data from small children and upper
extremity we are planning to purchase electro goniometric motion
system (like Infrotronic Gait Analysis or Ultraflex Gonio ) which has
sensors like XM65 or Z110 for twin axis or single axis measurement
activity of daily living.
Unfortunately we do not have much experience about advandages and
disadvantages of this kind of systems over camera based gait analysis.
appriciate if some one who has experience with those systems share info


Hi Ekin,
I'd think seriously about a Vicon system. The new cameras are
extremely hi-resolution. I have a 6m x 6m x 2.5m volume and can easily
reconstruct eighteen 9.5 mm markers on a single foot; whole body gait
analysis is even easier.

Michael Orendurff
Hi Elkin,

Peak has tracking software and hardware that would allow you to place
your markers closer together than what your Elite system would allow.
Also, much of your hardware (video cameras, force plates, EMG) should be
compatible with our system, thus you would not have to replace all your

If you think this may be a useful alternative to electrogoniometers,
please let me know. I would be happy to send you more detailed


Gary Scheirman Ph.D.
Vice President
Peak Performance Technologies, Inc.
7388 S. Revere Parkway
Centennial, CO 80112 USA

Have you looked into a magnetic gait system? See: www.innsport.com
Gregory S. Erdmann
Ascension Technology Corporation
107 Catamount Drive, Milton, VT 05468 USA
Tel: (802) 893-6657 Ext. 44
Fax: (802) 893-6659
web: http://www.ascension-tech.com
email: greg@ascension-tech.com
Product Video: www.ascension-tech.com (lower left page)
Magnetic, optical and inertial motion tracking technologies
for 3D computer graphics interaction.

November 2004: Did you know that Ascension is the only company
in the world that designs, develops and manufactures 5 different
motion tracking technologies?
- Active Optical
- Optical Scanning
- DC Magnetic
- AC Magnetic
- Inertial
Ask me which technology is best for your application.

Dear Ekin,

You cannot use goniometers if you want joint kinetics.

Also, I would advis you to check your tracking setup is optimal before
you consider changing to electrogoniometers. You should be able to
children with your Vicon.

Dr. Chris Kirtley MD PhD
Associate Professor
Dept. of Biomedical Engineering
Catholic University of America
620 Michigan Ave NE, Washington, DC 20064
Tel. 202-319-6247, fax 202-319-4287
Email: kirtley@cua.edu

N. Ekin Akalan MS. PT.

Director of the Gait Analysis Laboratory
I.U. Istanbul Medical Faculty 34390 Capa/Istanbul/Turkey

Doctoral student in Biomedical Engineering Institute
Bogazici University 34342 Bebek, Istanbul, Turkey

Phone: (212) 414-2000/32887 Fax: (212) 635 28 35


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