biomech of pro gait Flashcards
what is the weight acceptance part of gait
initial contact
loading
what is the stance/single limb support part of gait
mid swing
terminal swing
what is the swing/limb advancement part of gait
pre swing
initial swing
mid swing
terminal swing
what kind of moment is it at initial contact
knee ext moment
varus moment
IC - ground reaction force
in front of hip - pulling into flexion
behind knee - pulling into ext
behind foot - pulling into PF
the body is trying to resists these moement created by the ground reaction force
Varus moment - ground reaction force
- Medial knee – varus moment
- Medial hip – abductor, fall away from the line
Transtibial IC
the PF torque is transitioned up the whole chain
The prothesis will pull the leg forward and push them into knee flexion
Transfemoral IC
cannot use quad to compensate for torque moment
- Use glutes, hamstrings pull the femur into extension
- Fire the glute and push back against the socket
loading response GRF
knee flexion moment
ankle - PF
knee - flex
hip - ext
Varus response remains
mid stance moments
knee flex and ext moments
terminal stance moments
initial heel rise and knee ext moment
decreased varus moment
pre swing moments
heel rise/toe off and knee flex moment
what are factor that infulence gait
eitology: dysvascualr or trauma
location: tib or femur
what was the greatest O2 consumption
transfemoral and dysvascular
what is normal O2 consumption
.15%