Foot and ankle Flashcards
how many bones in the ankle
28
how many articulations
55
what bones make up the rear foot
talus and calcaneus
what bones make up the mid foot
navicular
cuboid
3 cuneiforms
what bones make up the forefoot
14 bones of the phalanges
5 metatarsals
medial and lateral sesmoids
distal tibiofibular joint is classified as
syndesmosis
separation of ankle bones from injury
diastasis
talocrural joint has what shape
saddle shaped
what two bones does the talocrural joint articulate
talus and distal tib
how is the talocrural joint classified
synovial hinge or modified sellar
talocrural close packed position
max dorsi flexion
talocrural open packed position
plantar flexed and midway between supination and pronation
what is an aka for talocalcaneal
subtalar joint
what type of joint is the subtalar joint
synovial, bicondylar compound joint consisting of two separate modified ovoid surfaces with own cavities (one male one female)
in practice subtalar has how much inversion
2:3 20 degrees
in practice subtalar has how much eversion
1:3 10 degrees
in chronic arthritic conditions in subtalar joint what happens
limit inversion
traumatic arthritis in subtalar joint what happens
eversion is limited
closed pack position for subtalar joint
full inversion (supination)
open packed position for subtalar joint
inversion/plantarflexion
majority of joints in foot and ankle will be classified how
synovial modified ovoid
what are the main deep talocalcaneal joint ligaments
interosseous
cervical
axial
what are the superficial talocalcaneal joint ligaments
lateral and posterior
what two articulations are in the midtarsal joint complex
talonavicular
calcaneocuboid
calcaneocuboid is classified as what type of joint
synovial modified sellar
calcaneonavicular ligament aka and location
spring ligament (navicular to sustentaculum)
calcaneocuboid joint includes what ligaments
long plantar ligament
part of bifurcate ligament dorsally
what is the most common direction to injure an ankle
plantarflexion inversion
interphalangeal joints are classified as what
synovial modified sellar joint
what is the only bone in the body with 3 anterior facets
navicular