Hello Mr. Imran Sharif,
Thank you for your interest in the Ariel
Dynamics technology. We manufacture two lines of biomechanical
research equipment: the Ariel Performance Analysis System (APAS) and
the Ariel Computerized Exercise Systems (ACES).
The APAS is a 3D video-based movement
analysis system which accurately quantifies function and provides
objective data the professional may use to justify or evaluate
treatment. Areas of successful application for the APAS
include human performance, injury and rehabilitation assessment,
quantification of loss for compensation claims, equipment and
product testing and development, determination of potential or
actual risks for products and activities in liability litigation, as
well as applied
research in the areas of orthopedic medicine, therapeutics, and
The APAS integrates state-of-the-art computer and video processing
hardware with specialized software modules that perform data
collection, analysis, and presentation. Objective quantifiable
documentation is provided for both 2-Dimensional and 3-Dimensional
analysis. Specific points of interest can be digitized with
user intervention or automatically using contrasting markers.
Stick figures are then generated and can be synchronized with
kinematics data. Additionally, up to 32 channels of analog
data (i.e. force platform, EMG, goniometers etc.) can be
synchronized with the kinematics data.
The APAS product information can be found on the Ariel internet site
direct address to several areas that might be of interest are listed
APAS Product Information
Comparison of Commercially Available Systems
Selected Applications Of APAS
Selected Publications Utilizing the Ariel Technology
ARIEL 3D-Renderer Module
You can even download a full version of
the APAS for a free 30 day trial.
The ARIEL CES is a computerized exercise/rehabilitation system that
is capable of isokinetic, isometric, isotonic and user-defined
exercise protocols. Additional information can be found on the
Ariel internet site. The direct address for the CES
information is listed below.
Please review the information and feel
free to contact us for any additional questions.
Ariel Dynamics, Inc.
----- Original Message -----
Sent: Saturday, March 17, 2001 4:16 PM
Subject: GAIT ANALYSIS SYSTEM
I am currenly writting a reseach paper
on the gait analysis systems available on the market and will be
greatful if you could send literature/ information/ researh
material of the the two types of systems offered by you.(APAS,ACES)
Mr Imran Sharif
Consutant orthopaedic surgeon.
11, BREWS HILL, NAVAN. Co.MEATH. IRELAND.
Fax no. 00-353-46-74936
This is the current status. I really don't think there are too many
All software works great when EVERYTHING is installed with DEFAULT
settings. This is what is recommended on our web site.
The latest versions of JRE and J3D on our web site can be
installed anywhere. These installers are very smart, and
anything you choose will work. Try it and you'll see.
If the customer must absolutely install APAS in a different
place, simply make sure that APAS and APAS/Renderer and APAS/Gait
will end up "together". In the default case it is:
C:\Program Files\Ariel Dynamics\APAS 3D Renderer\
C:\Program Files\Ariel Dynamics\APAS Gait\
for example the following will also work:
C:\Test\APAS 3D Renderer\
Otherwise my software won't find the CrypKey
Any suggestions to improve this installation are welcome. I am
CC-ing this to Jeremy and John also. I only consider 3 (the
licensing issue) to be a "problem", but this problem
does not occur if the user uses the default installation
YOu see the problems I have
everyday....Many interested. I am sure we will overcome these
----- Original Message -----
Sent: Wednesday, March 14, 2001 9:22 PM
Subject: Re: APAS Site Key#1
Based on the information you listed
below, you would probably require the following
D:\APAS (leave this
one as is)
Also, make certain that you follow the
installation instructions for the JAVA programs EXACTLY AS LISTED.
Both JAVA programs must be installed to the same JAVA directory.
By default, they install to different directories.
Please let me know your results.
Dr. Sumer -
Ariel has asked me to respond to your e-mail. I have been working
with Dr. Ariel for many years on a wide variety of subjects,
including gait analysis.
APAS/Gait information is available on-line. Please check the entry
philosophy is that printing brochures will only increase the cost of
the system without any additional benefits, so please check the
above site. We try to keep the price of the system as low as
possible for our customers. All information pertaining to our gait
product is available there, including prices, manuals, tutorials,
always interested in finding new partners in marketing our APAS and
APAS/Gait software. Please contact Gideon if you are interested in
becoming a partner. It may be a very nice business
Rudolf J.C. Buijs
----- Original Message -----
Sent: Wednesday, March 07, 2001 4:33 AM
Subject: Dr. Aykut Sumer
Dear Dr. Ariel,
You may remember me as I had sent you
my resume last year in order to seek a position in your company.
That time I had no work permit but afterwards I obtained an H1B
work permit while working for a company in Florida. Unfortunately
I had some disagreement with this company so I returned back to
Turkey. I am still teaching Biomechanics courses in Biomedical
engineering institute of Bogazici university in Istanbul, Turkey.
There will be a Gait Analysis seminar
soon. I will be meeting all the doctors who are interested in this
subject in Turkey. I would like to have your brochures before I
attend to the seminar since I will meet a group there to talk
about installing a gait Lab in a University hospital. So I would
appreciate if you could please mail me several copies of original
Dr. Aykut Sumer
Ph.D. in BioMechanics
BiyoMedikal Muh. Enst.
PK.2, Bebek, ISTANBUL
Dear Dr. Seong Jae Lee -
Dr. Ariel has asked me to respond to your e-mail. I am forwarding the
that I received from Dr. Sun Chung, one of the world's leading gait
who is working with us.
I hope this information is helpful to you. You can contact Dr. Chung,
Ariel, or myself if you need any further information.
Regards - ir. Rudolf J.C. Buijs, Ariel Dynamics
---- From Dr. Sun Chung -------------------
I am very glad to communicate with you. I am Sun Chung in Seoul. May I
answer your question to Gideon?
> > In the HHm/Anthro item 23/24
> > the Right anterior - posterior ASIS/HJC component (m), what
This anthropometric data can be measured manually. We take a point on
superior part of greater trochanter(GTroch) by palpation. And draw a
vertical line from the point, "vertical" assuming that the
standing. We measure the shortest distance between this line to the
ipsilateral ASIS. You may have some problem to locate the GTroch point
because it is somewhat blunt. Which point should we choose in this
blunt bony landmark? To solve this problem, we may look over the
article of Roy Davis (Davis RB et al. A gait analysis data collection
reduction technique. Human movement science 1991(10): 575-587). They
this GTroch point for the hip joint center in sagittal plane. Dr. Perry
wrote on her book "Gait analysis" that the hip joint center
overlies at the
anterior superior margin of the GTroch(Page 368, figure-17.7). So, I
recommend to take the anterior point of GTroch. What do you think?
Actually, I do not like this approach (Roy Davis's approach) to estimate
1. The measurement(GTroch to ASIS) is too error
2. The hip joint center in sagittal plane will be
influenced by the
amount of femoral anteversion, which varies individually.
3. As you can see on the article, their data were
based on only the
4. They did not report any detailed method to take
the x ray and
measurement for their estimation.
I had tried to reproduce their result with Korean adult pelves. But
to. I prefer Bell's approach but it is not the best. I hope we can have
way to estimate the hip joint center in the near future. Would you like
read this page
Only if you may be ready to read broken English.;-)
----- Original Message -----
From: "Seong Jae Lee" <firstname.lastname@example.org>
To: "Gideon Ariel" <email@example.com>
Sent: Tuesday, March 06, 2001 7:15 PM
Subject: Question about the anthropometry in APASGAIT
> Dear Dr. Ariel,
> I downloaded APASGAIT and have been trying it.
> It is working well and easy to use.
> But among many items in anthropometric data, I just don't
> what "anterior-posterior ASIS/HJC component" means and
> measure or calculate it. I'm supposed to use Helen Heyes modified
> marker set.
> Please let me know how to measure or calculate it.
> Seong Jae Lee, M.D.
> Department of Rehabilitation Medicine
> Dankook University Hospital
> San 16-5, Anseodong, Cheonan
> Choongnam 330-715
> Phone: +82-41-550-3898
> Fax: +82-41-551-7062
> E-mail: firstname.lastname@example.org