Exam 3 Flashcards
average CoM vertical displacement during gait
5 cm
average CoM side to side displacement during gait
4 cm
what contributes most to conserving energy during gait:
- ankle rotation
- pelvic obliquity
- knee flexion
- frontal plane pelvic rotation
pronation
eversion
abduction
dorsiflexion
supination
inversion
adduction
plantar flexion
normal dorsiflexion ROM
15-25 degrees
normal plantarflexion ROM
40-55 degrees
normal subtalar inversion ROM
23 degrees
normal subtalar eversion ROM
13 degrees
normal transverse tarsal inversion ROM
20-25 degrees
normal transverse tarsal eversion ROM
10-15 degrees
normal MTP extension ROM
65-85 degrees
normal MTP flexion ROM
30-40 degrees
arthrokinematics of subtalar joint
- posterior facet
- concave talar facet on convex calcaneus
purpose of the subtalar joint
to adapt to terrain
usual bone movement of subtalar joint
stable calcaneus and a moving talus
spring ligament
supports transverse tarsal stability
-supports talar head during weight bearing
keystone of medial longitudinal arch
talonavicular joint