Interface & Suspension - TT Flashcards
interface
anything b/w the RL and the socket
fxn of interface
distribute pressure
pad bony prominences
reduce friction
reduce shear force
what can an interface be
liner or insert
the interface is not part of
the suspension
pressure distribution
etc.
the interface can be part of
suspension
part of component that holds the prosthesis on
the ability to fulfill its fxn depends on –> interface
the material of the interface
if an interface is a liner or insert
primarily to pad or protect the RL
materials of interface
pelite foam
silicon
gell
urethane
pelite foam characteristics –>interface
not for suspension
insert of liner
inexpensive
compressible
does not reduce shear
what is pelite foam used w/ –>interface
cuff suspension
urethane is –>interface
all 3 materials
characteristics of urethane –>interface
sock absorption
shear reduction
pressure distribution
can be for suspension
what is the closest to normal physiologically –>interface
silicon
urethane, gel and silicone can act as –>interface
suspensions and interfaces
suspension
the component that holds the prosthesis on
pistoning
distance prosthesis moves off the RL in NWB
what does the amount of pistoning determine
the quality of the suspension
less pistoning = better the suspension
types of suspension
suction suspension
supracondylar cuff
thigh corset
silicon suspension
pin suspension/silicon sleeve
vacuum suspension/negative pressure
pin suspension/silicon sleeve is
3S (silicon sleeve suspension)
shuttle lock
strap/lanyard
vacuum suspension/negative pressure
w/ expulsion valve
w/ elevated suction
3S suspension design
silicon sleeve
pin
shuttle lock
silicon sleeve –> 3S
sleeve adheres to the skin on the RL
secures sleeve to RL