Ankle: Anatomy 2 Flashcards
The TCJ is this type of joint
uniaxial synovial hinge joint
TCJ: articulation occurs between
- convex trochlea of talus
- concave distal tibia and fibula (mortise)
Talus is wider by 0.1 inch in which direction?
- anterior
- lateral
The distal (tibia/fibula) extends more distally
fibula
The distal fibula extends more distally and (anteriorly/posteriorly)
posteriorly
The distal fibula extends more distally and posteriorly increasing stability in (direction) and decreases (medial/lateral) ankle sprains
- eversion
- medial
TCJ: supplied by which nerves?
branches of tibial and deep peroneal nerves
TCJ: runs from where to where?
tip of lateral malleolus to tip of medial malleolus
TCJ: lateral inclination
inclined 10˚ down laterally
TCJ: transverse plane
20-30˚ lateral from transverse plane
TCJ kinematics: how many degrees of freedom?
1 primarily
TCJ kinematics: With DF, talus glides (anteriorly/posteriorly)
posteriorly
TCJ kinematics: With DF, talus glides posterior and wedges between both malleoli allowing little to motion into
inv/ev
TCJ kinematics: since the joint axis is not solely in the sagittal plane, it is referred to as
triplanar
TCJ kinematics: since the joint axis is not solely in the sagittal plane, it is referred to as triplanar and the motion is
pronation and supination
shape of sinus tarsi
conical
The sinus tarsi is a conical shaped cavity located between what structures?
- anterosuperior surface of calcaneus
- inferior aspect of the neck of the talus
The sinus tarsi terminates posteromedial directly behind this structure
sustentaculum tali
