responses to transradial liner pin attachments/myoelectrics

responses to transradial liner pin attachments/myoelectrics

Jake Wood, CP

Thanks to all of you that responded,

Simply put I believe all responses, including myself, are from practitioners.
This is purely a discussion of a clinical nature.

Briefly I was asking for suggestions on the best liner that will accept
electrodes after holes have been opened in the liner. Or is there a better
way for the electrodes to be placed on the inside of the liner.

Responses
 #1. I am the Upper Extremity specialist here and have successfully used the
locking liner suspension on myo's. I use ProControl II from Motion Control and
for the last year and a half have had the OWW Alpha Liners, 6 mm, Medium,
Uniform used with Bulldog shuttle lock. Anchors into a Grace Plate.
Factory workers, farmers-very HD users. Durability has been good.
Non-Weight bearing seems to allow the liners to last significantly longer than
LE use. Used a large leather type sewing needle through the fabric into
the gel once my sites were identified. Heated needle first. Motion
Control's electrodes with their snap harness working very well.

#2. Try Coyote design and manufacturing ( <URL Redacted>. They
have good custom liners and should be able to help you. I have used a number
of their products and had good results. TEC has also been a good source for
me.

#3. Harold Sears at Motion Control, he has electrodes that the wires are
attached with snaps.

#4. I believe I saw that OWW has liners in which electrodes can be
attached.

#5. I recommend talking to Harold Sears/Motion Control regarding snap
electrodes. He has recently developed some which have worked really well on
gel liners. They are a two stage type and will allow the client to snap the
electrode cables on the liner after donning. They have worked well with the
Iceross Dermo liners.

#6. if you are placing the electrodes more the 4 inches proximal to the
distal end, you can use a 3 mm ossur liner cut at a 4 inch length which is
the minimum needed to hold onto the tissue. This way the pin system will
still work and not interfere with the signal.

#7. I had a similar case to yours. What we were able to do was to stop the
liner just short of the electrodes (which were placed as proximally as
possible). The edges of the liner were skived. We took this path because the
patient's other hand had limited function, so lining up holes on the liner to
unmarked sites on his arm would have proven difficult. This worked well and
he had good suspension. Of course, length would be an issue. Residual limb
length was about 60-65% of his forearm. The liner was about 4 long.

Not all responses were written. But these represent the majority. My patient
actually will be fit with the # 7 approach. I too have the residual limb
length. For me this approach seems the least problematic with the most
benefit.

Thank you again, I appreciate your help.



Jake R. Wood C.P., F.A.A.O.P.
Orthotics & Prosthetics Associates Inc.
10101 Innovation Dr., Suite 500
Milwaukee, Wisconsin 53226

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