Danielle Saenz | The lower extremity prosthetic | Samsung Paralympic Blogger | PyeongChang 2018
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Danielle Saenz | The lower extremity prosthetic | Samsung Paralympic Blogger | PyeongChang 2018

November 16, 2019


Hi there, it’s Dr. Danielle Saenz here again and
I’m here with Walter with Ottobock and we’re going to go over the anatomy of a prosthetic.
Specifically what we have here is a prosthetic for someone who has an above the knee amputation.
Let’s go over all the different parts. So Walter, where shall we start? What do we have
on this part? The upper part of the prosthetic we call the socket. The socket is the most
very important part because people go in to it with their stump and we have to fit it to
be very tight so that it stays on. The next part that we want to talk about is how does
the prosthetic actually stay attached. Now this particular part has something called
a suction mechanism. Tell us, Walter, how does that work? This has a mechanism and it creates
a vacuum in the socket. When you go in with the stump, the membrane inside of the
socket closes in on the skin. Then we have the valve and when you go in with the stump,
it pushes out the air and then we have the vacuum. Then the prosthetic stays on. Then
there won’t be any movement on the limb with inside the socket based on that vacuum. The
next part underneath the socket is the liner. Tell us, Walter, why is the liner important?
The liner is important because some people can’t stand the surface directly on the skin.
We put the liner on the stump so the stump is protected. It’s much easier for the person
to wear the prosthetic. Ok so the next part of the prosthetic we’re going to talk about
is the knee. Now this is a particularly specific prosthetic, because it’s used for skiing.
Walter, tell us what’s happening right here. The knee is for skiing and we have the large
piston inside the knee and when you are skiing it gives bounce and variable so the skier
can manage variable types of terrain and forces. So that the skier can manage variables types of terrain and forces. So then after we get through the knee, which
is helpful for bending while skiing, we’re going to move into the ankle. So tell me what’s
happening here. The ankle or the foot, called the foot, and the ankle has a piston like
the knee. It’s important for bounce and adjusting on the ground. Underneath you can see the
bindings will click in. So you just click right into your bindings and we ski down the
hill!

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