Novel Surgical Procedures & High-Level Prosthetic Devices Flashcards
what are the possible complications of femoral lengthening after TFA?
infection
slowed bone healing
pin migration
what improvements are seen after femoral lengthening after TFA?
gait
lower energy consumption
patient satisfaction
prosthetic use
femoral lengthening commonly lengthens the femur from ____ to ____ cm
15.5 cm to 21 cm
what are advantages to osseointegration?
removed socket-residual limb interface
improved function
improved quality of life
what are disadvantages of osseointegration?
risk of infection/irritation
risk for revised amputation in case of falls with fracture
what happens during an ewing amputation?
agonist-antagonist myoneural interface (AMIs) are created by linking muscle pairs within the residual limb (connects agonist and antagonist muscles)
what is the purpose of an ewing amputation?
aimed to provide proprioceptive feedback and better control of prosthetic device
– embodiment –> feels more connected with their foot
who were intrepid dynamic exoskeletal orthosis (IDEO) originally developed for?
service members with severe lower limb trauma (fractures, nerve injury, arthritis, ankle fusion)
what kind of material is the IDEO?
custom carbon fiber AFO
what does the IDEO improve?
pain
general LE function
high-level function
in order for a patient to qualify to use an IDEO, what must they accomplish first?
– why?
adopt non-rearfoot running foot strike (there are rearfoot, midfoot, and forefoot patterns for running)
– decreases stride length to keep foot under themselves
running specific feet:
– C shaped is for ____ and has ____ mount
– J shaped is for ____ and has _____ mount
– endurance ; inferior
– sprints ; posterior
what is the bench alignment for a C shaped foot?
M-L = middle
1-2” of foot in front of weight line to make contact with ground
what is the bench alignment for a J shaped foot?
what is the static alignment for a running foot?
– _____ 3-5 deg
– _____ 5-7 deg
– load line _____ from toe point of contact
– vertical deflection _______
– ER
– PF
– 1-2 inches
– 1-2 inches
true or false. the running foot is 1-2 inches shorter than unaffected due to vertical deflection
false - 1-2 inches longer
what is the dynamic alignment of a running foot?
– forefoot strike with ____
– deflection of the foot with _____
– _____ step length
– max hip ext at ____
– max hip flx at _____
– _______ kinematics
– ______ of knee flexion for:
– knee slightly flexed
– return of energy
– equal
– toe off
– terminal swing
– symmetrical
– 90 deg ; foot clearance
ossur total knee and ottobock 35S0 Sport knee are both specific to _____-
running
what is one pro to choosing a running prosthetic without a knee?
increased stability –> no knee to buckle, no fwd flex
how is foot clearance accomplished in a running prosthetic without a knee?
circumduction
when do patients typically choose to use a running prosthetic without a knee?
for long distances
what secondary MSK complication would you be worried about in running prosthetics without a knee?
bursitis or tendonitis – a lot of work on the abductors
running prosthetics without a knee can be challenging to use on _____
uneven terrains and slopes
what are considerations for a prostheses user performing weight lifting?
consider weight capacity of foot
limited DF ROM
what are considerations for a prostheses user performing cycling?
consider feasibility of clipping in/out (don’t wear shoe while cycling)
free knee appropriate
safety/balance
