LE specific joints- ankle and foot Flashcards
articulations, muscle actions and primary structures (24 cards)
what articulations (5) form the ankle and foot?
distal tibiofibular joint
talocrural joint
subtalar joint
midtarsal joint
forefoot
what structures is the distal talofibular joint of the ankle and foot formed by?
formed by a fibrous union between the lateral aspect of the distal tibia and the distal fibula
what articulations is the talocrural joint of the ankle and foot formed by?
distal tibia, talus, fibula
what kind of joint is the talocrural joint of the ankle and foot? how many degrees of freedom does this joint have?
synovial hinge joint; 1
the talocrural joint offers significant stability during __ and becomes much more mobile with __
DF; PF
what is the capsular pattern of the talocrural joint of the ankle and foot?
PF, DF
what is the loose packed position of the talocrural joint of the ankle and foot?
10 deg PF
midway between maximum inversion and evresion
what is the close packed position of the talocrural joint of the ankle and foot?
maximum DF
what are the osteokinematic motions of the talocrural joint of the ankle and foot?
DF, PF
what articulations form the subtalar joint of the ankle and foot?
anterior, middle and posterior articulations between the talus and calcaneus
the anterior and middle articulations of the subtalar joint of the ankle and foot are formed by two __ shaped facets on the __ and two __ shaped facts on the calcaneus
convex; concave
the posterior articulation of the subtalar joint of the ankle and foot is formed by a __ shaped facet on the __ surface of the talus and a __ shaped facet on the __ of the calcaneus
concave; inferior; convex; body
what is the capsular pattern of the subtalar joint of the foot and ankle?
limitation of varus range of movement
what is the loose packed position of the subtalar joint of the foot and ankle?
midway between extremes of range of movement
what is the closed packed position of the subtalar joint?
supination
what are the osteokinematic motions of the subtalar joint?
inversion, eversion
what is the midtarsal joint of the foot and ankle also known as?
the transverse tarsal joint
what structures is the midtarsal/transverse tarsal joint of the foot and ankle formed by?
talocalcaneonavicular joint
calcaneocuboid joint
the midtarsal/transverse tarsal joint is considered to have __ axes: a __ axis and an __ axis, with motions around both axes being __
2; longitudinal; oblique; triplanar
what is the capsular pattern of the midtarsal/transverse tarsal joint?
DF, PF, adduction, internal/medial rotation
what is the loose packed position of the midtarsal-transverse tarsal joint?
midway between extremes of range of movement
what is the close packed position of the midtarsal/transverse tarsal joint?
supination
what are the osteokinematic motions of the midtarsal/transverse tarsal joint
inversion, eversion
what structures make up the forefoot joint of the foot and ankle?
tarsometatarsal joints
metatarsophalangeal joints
interphalangeal joints
