Lecture 16 - Mobility And Gait Disorder Flashcards Preview

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Flashcards in Lecture 16 - Mobility And Gait Disorder Deck (7)
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1

Gait cycle - spatial
- stride
- step length
- step width
- foot angle

- stride; successive heel contacts of the same foot (144 cm)
- step length: distance between two successive heel contacts of different feet (average 72 cm)
- step width: distance between heel centers (7-9 cm)
- foot angle: degree of toe-out (7 degrees)

2

Gait cycle - temporal
- cadence
- stride time
- step time
- spatial-temporal descriptor

- cadence: number of steps per min (110)
- stride time: tume for a full gait cycle
- step time: time for a completion of a step
- spatial temporal descriptor: walking speed (5km/hr)

3

Center of mass during gait

- vertical displacement of 5 cm (min height during double limb support, max height at midpoint of single limb support

- medial-lateral displacement: 4 cm

4

Sagittal plane kinematics
- initial contact
- loading response
- mid and terminal stance
- initial and mid swing
- terminal swing

- initial contact: joints are aligned to reach forward
- loading response: knee flexes and ankle plantarflexes to absorb the impact
- mid and terminal stance: knee and hip extend
- initial and mid swing: hip and knee flex
- terminal swing: knee extends and hip flexes

5

Muscle activity
- hip extensors
- hip flexors
- gluteus medius
- knee extensors
- knee flexors

- hip extensors: eccentrically at terminal swing, concentrically after heel strike
- hip flexors: decelrate extension, produce flexion at 1st part of swing
- gluteus medius: stance phase (Trendelenburg sign is gluteus medius weakness
- knee extensors: before heel contact to heel off
- knee flexors: before heel strike to after heel strike

6

Common gait deviation
- foot slap
- antalgic
- hemiplegic
- parkinsonian
- anterior trunk lean

- foot slap: weakness of ankle dorsiflexors
- antalgic: asymmetrical, decreased stance phase
- hemiplegic: vaulting, circumduction
- parkinsonian: short, hurried steps, freezing
- anterior trunk lean: quadriceps weakness

7

What does hip anteversion result in

In toeing