foot movements + ligaments Flashcards
what kind of motions are involved with pronation? and what planes are they in?
triplanar movement:
ankle DF (sagital)
hindfoot eversion (frontal plane)
forefoot abduction (horizontal)
what kind of motions are involved with supination?
Triplanar movement:
ankle plantar flexion (sagital)
hindfoot inversion (frontal plane)
forefoot adduction (horizontal plane)
in pronation, what happens to the medial arch?
it lowers
in supination, what happens to the medial arch?
it rises
what movements are the tibiofibular joint responsible for?
lower leg IR and ER
what movements are the subtalar joints responsible for?
inversion and eversion
what joints make up the transverse tarsal joint or the Chopart joint?
calcaneocuboid joint
talocalcaneonavicular joint
what three ligaments make up the talocalcaneonavicular joint?
plantar calcaneonavicular
plantar calcaneocuboid ligament (short)
long plantar ligament
what ligament is known as the SPRING ligament?
plantar calcaneonavicular
what ligament is known as the short plantar ligament?
plantar calcaneocuboid ligament
what ligaments support the medial + transverse arch (longitudinal) ? and which one is the most important?
plantar calcaneonavicular ligament (SPRING IS THE MOST IMPORTANT)
plantar calcaneocuboid ligament (short)
long plantar ligament
what muscles are involved in dynamic support of the medial longitudinal arch?
tibialis posterior
tibialis anterior
flexor hallucis longus
fibularis longus
what keeps the tendons of the fibularis longus and brevis muscles from subluxation?
inferior fibular retinaculum
superior fibular retinaculum
what muscles are involved in passive support?
plantar aponeurosis
long plantar ligament
short plantar ligament
plantar calcaneonavicular ligament
what muscle is the cuboid a pulley for?
fibularis longus
what muscles form a stirrup for the transverse arch?
tibialis posterior
fibularis longus
the forces through the extensor hood create what muscle movements? and what movements are they resisting?
MTP flexion
PIP extension
flexion of MTP joint prevents overextension
extension of PIP joints prevents overflexion
what bones are associated with the medial longitudinal arch?
calcaneus, navicular, cuneiform , 1st ray
what bones are associated with the lateral longitudinal arch?
calcaneus, cuboid, 5th ray
what bones are associated with transverse arch?
cuneiforms, cuboid
what is the function of the flexor retinacula?
covering the tarsal tunnel
what retinacula can be injured with a high ankle sprain?
superior extensor retinaculum
what retinacula can be injured with a lateral ankle sprain?
inferior extensor retinaculum
what actions does the LCL and MCL help with?
contributes to stability while standing
