Review: Plantar Foot and Joints Flashcards
higher and more important arch
medial longitudinal arch
what does the medial longitudinal arch consist of?
calcaneustalusnavicularthree cuneiformsthree medial metatarsals
what supports the medial longitudinal arch?
spring (calcaneonavicular) ligamentplantar aponeurosis
during standing, this arch rests on the ground
lateral longitudinal arch
what does the lateral longitudinal arch consist of?
calcaneuscuboidlateral two metatarsals
what supports the lateral longitudinal arch?
long plantar ligamentshort plantar ligamentplantar aponeurosis
what forms the transverse arch?
cuboidthree cuneiformsbases of all metatarsals
what maintains the transverse arch?
all the ligaments and the peroneus longus tendon
what is the keystone bone of the medial longitudinal arch?
talus
talocrural joint = ankle jointwhat bones?
trochlea of talustibia fibula
what type of joint is the ankle joint?
ginglymus or hinge type of synovial joint
located on the medial side of the ankle joint with 4 distinct bands
deltoid ligamentall the bands attach to the tibia
located on the lateral side of the ankle joint with 3 distinct bands
lateral ligament
which side of the ankle is weaker
lateral side
range of dorsiflexion
35 degrees up
range of plantarflexion
55 degrees down
when is the ankle joint more stable
joint is very stable when dorsiflexed
what type of joint is the subtalar(talocalcaneal joint)
plane type of synovial joint
what action does the subtalar joint permit
inversion and eversion
what type of joint is the talocalcaneonavicular
ball and socket
what type of joint is the calcaneocuboid joint
plane
what type of joint is the tarsometatarsal joint
plane type of synovial joint
what type of joint is the intermetatarsal joint
plane type of synovial joint
what type of movement does the intermetatarsal joint allow?
gliding movements
what type of joint is the metatarsal phalangeal MP joint?
condyloid type of synovial joint
what actions do the metatarsal phalangeal joints allow?
flexionextensionabductionadductionrotation
what type of joints are the interphalangeal joints?
hinge type of joint
what type of motion do the interphalangeal joints allow?
flexion and extension
why type of injury are ankle sprains usually cuased by?
inversion injuries causing damage to the lateral ligaments
most commonly torn ankle ligament
anterior talofibular of the lateral ligament
what causes a potts fracture
forceful eversion of the foot
what is damaged in a potts fracture
the medial and lateral malleoli and the fibulaNOT the deltoid ligament- that bad ass motherfucker never tears