Leg, Foot, & Ankle Flashcards
number of bones in the foot and ankle
28, including two sesamoid
sesamoiditis
inflammation of the sesamoid bones
number of articulations in the foot and ankle
55, including 30 synovial joints
Rear foot
aka hindfoot
made up of talus and calcaneus
midfoot
made up of the navicular, cuboid, and three cuneiforms
forefoot
made up of the 14 bones of the toes, 5 metatarsals, and medial and lateral sesamoids
Distal tibiofibular joint
classified as a syndesmosis
common area of diastasis (separating ankle bones due to injury)
talocrural joint
ankle joint
classified as a synovial hinge or modified sellar joint
formed between talus and distal tibia
Primary motions at the talocrural joint
dosiflexion and plantarflexion
close packed position of the talocrural joint
weight bearing dorsiflexion
open packed position of the talocrural joint
midway between supination and pronation
Subtalar joint
aka talocalcaneal joint
synovial, bicondylar compound joint composed of two separate, modified ovid surfaces with their own joint cavities
subtalar joint supination and pronation are measured by
the amount of calcaneal (hindfoot) inversion and eversion
close packed position of the subtalar joint
full inversion
open packed position of the subtalar joint
inversion/plantar flexion
superficial talocalcaneal joint ligaments
posterior talocalcaneal and lateral calcaneal
deep talocalcaneal joint ligaments
interosseus, cervical, and axial ligaments
midtarsal joint complex
made up of the talonavicular and calcaneocuboid articulations
Talonavicular joint
synovial, compound, modified ovoid joint
formed by talus, navicular, calcaneus, and spring ligament
spring ligament
aka plantar calcaneonavicular ligament
connects the navicular bone to the sustentaculum tali on the calcaneus
calcaneocubiod joint
simple, synovial, modified sellar joint
ligaments of the calcaneocuboid joint
long plantar ligament and a portion of the bifurcate ligament
cuneonavicular joint
compound, synovial, modified ovoid joint
Intercuneiform and cuneocubiod joints
compound, synovial, modified ovoid joints
Cubometatarsal joint
when considered alone, a compound, modified ovoid, synovial joint
Cubonavicular joint
syndesmosis/plane surfaced joint
Intermetatarsal joints
the first is classified as SIMPLE synovial modified ovoid and the second third and fourth are classifies as COMPOUND