Dear List Servers,
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?
