Join Date: Jul 2007
Location: North Carolina, USA
Bikes: tandem, road bike, hybrid
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I used liner with pin suspension for 4 years, stopped around 2001. That prosthesis had Alpha liners - they were green and gray/silver in color. I have been an amputee for many years, and the umbrella at the bottom of most pin-type liners is larger than the distal end of my residual limb. The milking sensation is challenging for me to tolerate. The axis of the lock for the pin also was not vertical on that limb, which probably emphasized the milking action. The alignment that I've had for about 15 years has my knee externally rotated, and my tibia is not pointing straight down.
I have been using ALPS Easyliner (no pin for me) and ALPS VIVA suspension sleeve. The sleeve is not wonderful for biking - it is very flexible and stretchy.
I'm going to a new prosthetist who's willing to help me work to get my walking alignment closer to textbook (which would be more efficient).