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Hello to the group,
Our lab is beginning an investigation into the screw/rod strain in anterior
spinal constructs during typical loading conditions of the spine. I have
accessed the biomch-l archives on my following question but gained little
information other than preferred suppliers of strain gauge instrumentation.
I have also seen abstracts/publications on this topic but without the key
piece of information. How does one actually get the gauge on the screw
head?
The screw head is part of the 5.0mm Moss-Miami system developed by Depuy
Acromed. The diameter is 10.75mm and the actual width for application is
3.25mm. We are using the Measurements Group system with their application
tools. We have tried different types of gauges with a variety of
alignments. We have met with little success. I am at the point of trying a
spray adhesive for this application since the method of cyanoacrylate
applied under adhesive tape will not keep the gauge on the steel (316
stainless I believe).
Have the people with experience with this application used a
different/custom technique? Are there effective spray adhesives for this
application? Have I missed literature that explains this portion of the
procedure?
With kind regards and summary email to follow,
Andrew
Andrew Mahar, MS
Orthopedic Biomechanics Research Center Children's Hospital
- San Diego
MC5054
3020 Children's Way
San Diego, CA
92123-4282
P: 858-495-4975 "I drank what???"
F: 858-614-7494 -Last words of Socrates
amahar@chsd.org
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For information and archives: http://isb.ri.ccf.org/biomch-l
---------------------------------------------------------------
Our lab is beginning an investigation into the screw/rod strain in anterior
spinal constructs during typical loading conditions of the spine. I have
accessed the biomch-l archives on my following question but gained little
information other than preferred suppliers of strain gauge instrumentation.
I have also seen abstracts/publications on this topic but without the key
piece of information. How does one actually get the gauge on the screw
head?
The screw head is part of the 5.0mm Moss-Miami system developed by Depuy
Acromed. The diameter is 10.75mm and the actual width for application is
3.25mm. We are using the Measurements Group system with their application
tools. We have tried different types of gauges with a variety of
alignments. We have met with little success. I am at the point of trying a
spray adhesive for this application since the method of cyanoacrylate
applied under adhesive tape will not keep the gauge on the steel (316
stainless I believe).
Have the people with experience with this application used a
different/custom technique? Are there effective spray adhesives for this
application? Have I missed literature that explains this portion of the
procedure?
With kind regards and summary email to follow,
Andrew
Andrew Mahar, MS
Orthopedic Biomechanics Research Center Children's Hospital
- San Diego
MC5054
3020 Children's Way
San Diego, CA
92123-4282
P: 858-495-4975 "I drank what???"
F: 858-614-7494 -Last words of Socrates
amahar@chsd.org
---------------------------------------------------------------
To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
For information and archives: http://isb.ri.ccf.org/biomch-l
---------------------------------------------------------------