Biomechanics Flashcards
1
Q
Elftman Theory
A
as the subtalar joint becomes more pronated, the midtarsal joint axes become more parallel –> more motion of forefoot on rearfoot
2
Q
Angle of gait
A
bisection of center of heel and first interspace with sagittal plane
average 7 degrees toe out per side, for total 12-15 degrees
3
Q
Stride length
A
distance btwn 2 consecutive contacts of the same foot
avg 1.41 m (4.5 ft), men 14% longer than women
4
Q
Position and motion of pelvis, femur and tibia during gait cycle
A
Pelvis Position: 0-2 IR, Motion: 4-5 IR
Femur Position: 0 neutral Motion: 6 IR
Tibia Position: 2 IR Motion: 9 IR
5
Q
Avg cadence
A
101-122 steps/min
6
Q
Severe restriction of frontal plane hindfoot motion adaptive compensatory
A
ball-and-socket ankle
