Hello Bill,
It sure has been a long time, hope all is well with you.
A couple of suggestions for your patient.
The USMC Black Max units have a design available which incorporates a
pyramid adaptor into the knee unit (models P24830 & P24850) reducing the
over all length requirements. Laminating a rotatable socket adaptor
directly into the distal aspect of the socket also helps reduce the
length requirements. Length is always an issue, but it may allow you to
introduce a hydraulic unit, a definite bonus for active patients. It
will tend to be a higher maintenance unit than the 3R30, the trade off is
increased function.
As for socket design, I have fabricated sockets with a window design
similar to that of a Symes’ prosthesis. Utilizing an Alpha liner to
provide tissue compression, fabricate a socket with a window cut-out over
the prominent condyle. With a second lamination fabricate a window, with
a positive lock design and velcro closures, to both secure the window in
place and provide suspension.
Just a couple of idea’s to kick around. Best to you, keep in touch, and
write back. I’d love to hear from you after all these years.
Kelly said to say hello!!
Michael Madden
