Transtibial Prosthesis Setup for Amputee Cycling
Anne Russell
Description
Collection
Title:
Transtibial Prosthesis Setup for Amputee Cycling
Creator:
Anne Russell
Date:
5/6/1999
Text:
Hi Allan
I'll try to be brief, I am the person that created Dory's leg that won Gold
medals at both the 96 Paralympic and 98 world games in Amputee track
cycling.
The first leg was done with a foot in plantarflexion, but was really a waste
of time.
There are two main points that have to be worked on; keep the knee in the
power zone, and get as much power out the up stroke.
Power Zone for amputees is keeping the knee from flexing past 100 degrees of
flexion, in cycling there is minimal up stroke power from 100 degrees to
full flexion of the knee. How we got around this by using no foot. We used a
Look pedal binding attached to graphite Moyes downtube, and set the binding
where the heel would be.
Suspension for the up stroke was done by two methods. The first on was
using a graduated 3/S liner, with no linear displacement. The second was
the socket, this of course was the most difficult to design. It had anti
rotation anterior A/P, that grab on both side of the patella tendon to help
in the upward stroke.
The most interesting is the posterior wall, it higher than most posterior
walls, and with no flair, usually it is 1/16 polypro shaped to the tendons
when the knee is flexed. A buckle tightens this flexible wall. The
flexible posterior wall has a modification PTPC, Posterior Tibia Plateau
Containment that controls the medial area while relieving the medial
hamstring insertion.
I hope this helps, but we have started on new foot attachment and socket
design for the 2000 Australia Paralympic, so I'm not sure what we will be
doing in the future.
-----Original Message-----
From: Orthotics and Prosthetics List [mailto:<Email Address Redacted>]On Behalf
Of Allan & Desi Wicks
Sent: Wednesday, May 05, 1999 5:04 AM
To: <Email Address Redacted>
Subject: Transtibial Prosthesis Setup for Amputee Cycling
Can any of my colleagues help me with information regarding setting up a
transtibial prosthesis for competitive cycling please? I am particularly
interested in socket - foot angular relationships and placement.
Allan Wicks
Director Orthotics and Prosthetics
Royal Adelaide Hospital
South Australia
I'll try to be brief, I am the person that created Dory's leg that won Gold
medals at both the 96 Paralympic and 98 world games in Amputee track
cycling.
The first leg was done with a foot in plantarflexion, but was really a waste
of time.
There are two main points that have to be worked on; keep the knee in the
power zone, and get as much power out the up stroke.
Power Zone for amputees is keeping the knee from flexing past 100 degrees of
flexion, in cycling there is minimal up stroke power from 100 degrees to
full flexion of the knee. How we got around this by using no foot. We used a
Look pedal binding attached to graphite Moyes downtube, and set the binding
where the heel would be.
Suspension for the up stroke was done by two methods. The first on was
using a graduated 3/S liner, with no linear displacement. The second was
the socket, this of course was the most difficult to design. It had anti
rotation anterior A/P, that grab on both side of the patella tendon to help
in the upward stroke.
The most interesting is the posterior wall, it higher than most posterior
walls, and with no flair, usually it is 1/16 polypro shaped to the tendons
when the knee is flexed. A buckle tightens this flexible wall. The
flexible posterior wall has a modification PTPC, Posterior Tibia Plateau
Containment that controls the medial area while relieving the medial
hamstring insertion.
I hope this helps, but we have started on new foot attachment and socket
design for the 2000 Australia Paralympic, so I'm not sure what we will be
doing in the future.
-----Original Message-----
From: Orthotics and Prosthetics List [mailto:<Email Address Redacted>]On Behalf
Of Allan & Desi Wicks
Sent: Wednesday, May 05, 1999 5:04 AM
To: <Email Address Redacted>
Subject: Transtibial Prosthesis Setup for Amputee Cycling
Can any of my colleagues help me with information regarding setting up a
transtibial prosthesis for competitive cycling please? I am particularly
interested in socket - foot angular relationships and placement.
Allan Wicks
Director Orthotics and Prosthetics
Royal Adelaide Hospital
South Australia
Citation
Anne Russell, “Transtibial Prosthesis Setup for Amputee Cycling,” Digital Resource Foundation for Orthotics and Prosthetics, accessed November 25, 2024, https://library.drfop.org/items/show/211903.
