Gaits Flashcards
(42 cards)
Eversion;
Usually refers to lateral movement of the calcaneus, produces pronation in the subtalar joint.
Dynamic movement, static position
Pronation
Inversion; refers to medial movement of the calcaneus, supination in the subtalar joint.
Dynamic movement, static position
Supination
Stance phase and Swing phase
Phases of gait
Heel Strike, midstance, and propuslive period
Stance Phase
- Toe-off opposite foot
- Knee extended
- Foot dorsiflexed
- Leg decelerating
- Subtalar join is pronating, calcaneus rocking laterally, the foot itself is in a supinated position.
Heel Strike
- 27% of stance phase.
- Major functions: transfer weight and shock absorption
Heel strike
- Weight-bearing period b/w foot flat and heel lift.
- Toe-off completed for opposite foot
- Foot in full contact with floor
- Subtalar joint is supination, calcaneus rocking medially, the foot itself is moving toward a prorated position
Midstance
- 40% of stance phase
- Major functions: bearing weight, convert foot from adaptive shock absorber to rigid lever for propulsion
Midstance
- Period b/w heel lift and toe-off (push off)
- subtalar supination continued and completed
- subtalar joint continued to supinate, calcaneus rocking medially, the foot itself is in a prorated position
Propulsive Period
- 33% of stance phase
- Major functions: transfer weight from lateral to medial side of foot, and to ball and toes for even propulsion. Shifting weight of body to other foot.
Propulsive period
Approximately 60% of gait cycle
Stance phase
Approximately 40% of gait cycle
Swing phase
Acceleration, mid swing, deceleration
Phases of Swing phase
- Toe-off to midswing
- Hip flexes to propel leg forward
- Functional significance: transfer foot forward for next step.
Acceleration phase
- transition period b/w acceleration and deceleration
- halfway point to swing phase
Mid swing
- Midswing to heel strike
- major function: decelerates lib to prepare for contact and weight transfer
Deceleration
Six Classical Determinants
Pelvic rotation Pelvic tilt Pelvis shift Knee flexion Knee-ankle relationship Hip flexion
Normal oscillation pattern
High point:_______________
Midstance (either foot)
Normal Oscillation pattern
Low point:________________
Double weight bearing (toe-off/heel strike)
Rotation of the entire pelvis away from the side of the forward leg.
Pelvic rotation
4 degree to each side
Pelvic rotation
- Axis of rotation in the opposite hip.
- Result is decreased angle b/w leg and floor and b/w hip and leg.
- Vertical displacement decreased by 3/8
Pelvic rotation
Pelvic dips inferiorly on the swing side (4-6 degrees)
Pelvis shift
Hip adduction on stance side
Smoothes pelvic motion, helps maintain balance
Pelvis shift