Gait Flashcards
forces applied to prosthetic and orthotic devices are _________
external forces
list the spatial descriptors of gait
- stride length
- step length
- degree of toe-out (foot angle)
- 5-7 degrees normal
- step width
- 8-10 cm average
_______ step length is often seen in amputees. Why?
asymmetrical
potentially due to spending less time in stance phase on involved side
results in shortening swing time and step length on noninvolved side
list the temporal descriptors of gait
- stride time
- step time
- cadence
- number of steps per minute (most important of these 3)
describe the spatio-temporal descriptor of gait that is the most important
gait speed
distance covered in a given amount of time
(step length * cadence)
(normal healthy is 1.37 m/sec)
T/F: it is common for prosthetic user to have reduced gait speed
TRUE
List some reasons for decreased gait speed in amputees
- new amputee might be afraid/decreased confidence → move slower and more cautious
- poor gait training
- pre amputation, the pt may not have had normal gait speed
what are the key features during IC/LR?
- Shock absorption
- PF
- knee flexion
- pronation
- hip adduction
- forward propulsion through hip extension
what are the key features of gait during midstance?
- shock absorption
- stabilize in single limb support
- forward progression of the tibia
- CK DF in able bodied gait
what are the key features of gait during terminal stance?
- continued stabilization in single limb support
- forward propulsion through PF
- forward progression
what are the key features of gait during pre-swing?
- continued forward propulsion through PF
- continued forward progression
what are the key features of gait during inital swing?
- forward propulsion of swing leg through hip flexion
- foot clearance
- DF
- knee flexion
what are the key features of gait during midswing?
forward propulsion of swing leg through hip flexion
what are the key features of gait during terminal swing?
- preparation for IC
- controlled knee extension
- ankle positioned into less supination
what key muscles are activated at the hip throughout gait and what are their roles?
- Hip extensors
- activated at TSw prior to IC to initate hip ext and prepare LE for weight acceptance at the beginning of stance
- Hip flexors
- advance LE forward during ISw and lift LE to allow for toe clearance during swing
- Hip abductors’
- control the slight lowering of the contralateral pelvis on the side of the swing limb
- Hip adductors
- assist w/initation of hip flexion after toe off