Clutch Locks Disengaging - RESPONSE
John T. Brinkmann, CPO
Description
Collection
Title:
Clutch Locks Disengaging - RESPONSE
Creator:
John T. Brinkmann, CPO
Date:
7/20/2003
Text:
Dear List Servers,
My original question:
I have two patients with Cascade clutch locks (IRS-500-AK) that are
reporting frequent unlocking during knee flexion (while sitting). I
have used these locks for years and have not had this problem. In
both cases these sockets are only several weeks old. The problem does
not seem to be related to the entry hole widening. In one case the
prosthesis is for the right side, and in the other for the left, so
the position of the locking mechanism (anterior or posterior) does not
seem to be a factor. Any ideas?
_____________
RESPONSES
I received many responses to this post, indicating that others have been
experiencing similar problems. Most recommended switching to other locks or
suggested sources for the unlocking that did not apply to my patients (hose
pressure on button, wear/tear, bumping the button, etc.) I have talked with
Dave Parrott at Cascade, and been given two new locking mechanisms.
Apparently the problems have been resolved by changing the design of the
mechanism slightly. I have replaced the faulty mechanism that has been
causing the most problem, and after almost a week with the new mechanism the
patient reports that the problem appears to be resolved. Thanks to Cascade
and Dave P. for helping out on this one.
John Brinkmann, CPO
My original question:
I have two patients with Cascade clutch locks (IRS-500-AK) that are
reporting frequent unlocking during knee flexion (while sitting). I
have used these locks for years and have not had this problem. In
both cases these sockets are only several weeks old. The problem does
not seem to be related to the entry hole widening. In one case the
prosthesis is for the right side, and in the other for the left, so
the position of the locking mechanism (anterior or posterior) does not
seem to be a factor. Any ideas?
_____________
RESPONSES
I received many responses to this post, indicating that others have been
experiencing similar problems. Most recommended switching to other locks or
suggested sources for the unlocking that did not apply to my patients (hose
pressure on button, wear/tear, bumping the button, etc.) I have talked with
Dave Parrott at Cascade, and been given two new locking mechanisms.
Apparently the problems have been resolved by changing the design of the
mechanism slightly. I have replaced the faulty mechanism that has been
causing the most problem, and after almost a week with the new mechanism the
patient reports that the problem appears to be resolved. Thanks to Cascade
and Dave P. for helping out on this one.
John Brinkmann, CPO
Citation
John T. Brinkmann, CPO, “Clutch Locks Disengaging - RESPONSE,” Digital Resource Foundation for Orthotics and Prosthetics, accessed November 6, 2024, https://library.drfop.org/items/show/221374.
