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42 Cards in this Set

  • Front
  • Back
How many degrees of motion does the talocrural joint possess?
What is the closed packed position for the talocrural joint?
Describe the arthrokinematics of open chain dorsiflexion.
The talus rolls anteriorly and glides posteriorly
During what motions does the anterior talofibular ligament because taut?
PF and inversion
How many degrees of motion occur at the subtalar joint?
What motions occur that the subtalar joint?
Supination and pronation
True or False: the fibula is considered part of the talocrural joint.
What are the primary functions of the talocrural
Shock absorbance and impart thrust for ambulation
What bones comprise the subtalar joint?
Inferior surface of the talus articulating with the superior surface of the calcanus
What motions are associated with supination?
Inversion, adduction and plantarflexion
Describe the axis of the subtalar joint.
Oblique axis that forms a 42° angle in the vertical plane and 16° in the horizontal plane
True or False: motion at the subtalar joint can be described as being triaxial.
False, it is triplanar
True or False: Rearfoot pronation is associated with internal rotation of the tibia.
Internal rotation of the tibia is associated with what frontal plane motion at the knee?
True or False: During open chain subtalar motions the talus is stable.
True or False: During closed chain subtalar motions the forefoot is stable.
True or False: during closed chain subtalar pronation the talus adducts and plantarflexes.
True or False: during open chain subtalar supination the forefoot abducts and dorsiflexes.
False, adducts and plantarflexes
What ligament becomes taut with ankle eversion?
True or False: a person with excessive pronation has a decreased medial longitudinal arch.
What role do the arches of the foot play?
dissipating forces, adjusting to changes in terrain and propelling body forward.
Lateral rotation of the tibia is associated with what rearfoot motion?
What forefoot and midfoot motions are associated with rearfoot varus?
True or False: rearfoot varus is the same as rearfoot supination.
True or False: plantarflexion at the talocrural joint is associated with knee extension.
What nerve roots innervate the Anterior Tibialis?
Describe the arthrokinematics of closed chain plantarflexion.
The tibia rolls and glides posteriorly
What nerve roots innervate the Gastrocnemius?
S1 and S2
Decribe why ankle dorsiflexion is more stable then plantarflexion.
Since the anterior aspect of the talus is wider than the posterior aspect, during DF the anterior aspect fits between the malleoli thus creating a "wedging" effect
What is the closed packed position of the subtalar joint?
How much dorsiflexion does the talocrural joint offer?
20 degrees
What bones make up the midfoot?
Navicular, cuboid and cuneifrom
What bones matke up the forefoot?
Metatarsals and phalanges
What joints make up the midfoot?
Transverse tarsal and Distal intertarsal
What joints make up the forefoot?
MTP, Tarsometatarsal, Intermetatarsal, IP
What joint makes up the rearfoot?
True or False: the Navicular articulates with the talus.
True or False: The calcaneous articulates with the lateral cuneiform
False, it articulates with the cuboid
What are the 3 major components of the lateral collateral ligaments?
Ant talofibular, Calcanofibular and posterior talofibular
A syndesmosis sprain of the ankle includes what ligaments?
Anterior Tibiofibular and Posterior Tibiofiblular (notice these ligaments are different from the talofibular ligaments)
The ankle joint is similar to what common carpenter's joint?
What muscles are the main supinators?
Posterior Tibialis, Flexor Digitorum longus, and flexor hallucis longus