Replies for Camber Axis joints

Replies for Camber Axis joints

Harasimiuk, Mark

1/24/2002

Dear list,
Here are the summary of replies so far. There are mixed feelings about the
joints and some others have also been recommended in their place. I have
contacted Becker and there aren't any suggestions there.

Mark Harasimiuk C.O. (c)
Certified Orthotist
QA Centre for Children's Health
Fisher Building
Victoria, BC Canada
+1 (250) 721-6779
+1 (250) 721-6815 fax

<Email Address Redacted>


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I can't think of anything that would dampen the terminal contact noise but I
do have a comment about the screw supplied by Becker that secures the
various cams. This screw is quite prone to shear failure, especially if a
significant dorsiflexion moment is present. Replace the screw with an
equivalent stainless steel version to minimize any problems. Good luck with
the noise!

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I have used the Camber Axis joint on many cases over the last 2-3 years. On
light weight moderatly active patients the joint holds up fairly well. I
have had a significant breakage problem when the joint is used on very
active people. Rather bulky joint. Have had better results using Tamarack or
Gaffney joints with a Becker 755 motion limiter.
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I have not used these particular ankle joints...but let me suggest
contacting
James Campbell, Ph.D., C.O..
Director of Research and Development
Becker Orthopedic
<Email Address Redacted>
1-800-521-2192
He should be able to give you some suggestions.

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The Camber Axis joints have been used extensively in my orthotics practice
with good success in a wide range of clinical applications in thermoformable

AFO systems to eliminate the problems inherent with the typical posterior
stop components. I have found that the best solution for the metallic sound

sometimes created by the steel ROM key against the stop is application of a
light to medium weight machine oil lubricant in the slot / key mechanism.
This will allow proper seating of the key within the slot mechanism and
prevent clicking when dorsi or plantarflexion is desired.

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...It is called the Meridian Ankle Joint and is an adjustable range of
motion ankle joint for thermoplastics that can be set in any desired
position. There are no changing parts to adjust degrees, and it i made from
stainless steel and is very durable. THe set screws have rubber tips on the
end for noise reduction. I know this does not help you with your Camber
Axis question, but this joint may prove quieter and better for your needs.

If you have any questions, or would like further information please contact:

Casey Bradshaw
Scott Orthotic Labs, Inc.
1831 East Mulberry
Fort Collins, CO 80524
1-800-821-5795
<Email Address Redacted>
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I dont like the joint. I have had much better results with OTS joints
instead.
The range of motion adjustments are better(similar to A Bicaal). The joint
also withstands more stress than the Camber Axis joint.
-----------------------

Mark, we used those joints on three people, we experienced a 100% failure
rate due to noise and premature wear. Try the Meridian joints, they are
bulkier, but, they are much more durable.

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That happens. Try putting some 1/8th aliplast or other foam over it and see
if it lessens the noise.
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I don't use them any more. But I would say make sure the joints are really
square or else the keys will slide underneath the part that it is supposed
to
stop. I also had a pt. that continually broke (sheared) the screw that holds

the keys in place. Otherwise, I liked it and had no patient complaints of
noise.

--------------

Use tamaraks instead
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Mark Harasimiuk C.O. (c)
Certified Orthotist
QA Centre for Children's Health
Fisher Building
Victoria, BC Canada
+1 (250) 721-6779
+1 (250) 721-6815 fax

<Email Address Redacted>