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foot anat and pos
foot anatomy and positioning comp questions
Question | Answer |
---|---|
Name the tarsal bones | medial, middle and lateral cuneiforms, cuboid, scaphoid (navicular), calcaneus (os calcis), talus (astralagus) |
What are the alternate names for the cuneiform bones? | 1, 2, 3 |
What is the alternate name for the scaphoid tarsal? | navicular |
What is the alternate name for the calcaneus tarsal? | os calcis |
What is the alternate name for the talus tarsal? | astralagus |
What joints make up the ankle mortise? | talofibular and tibiotalar |
What is the largest, strongest tarsal? | calcaneus |
What makes up the ball of the foot? | the 5 metatarsal heads |
What is the purpose of the longitudinal arch? | it acts as a shock absorber |
What attaches to the calcaneal tuberosity? | calcaneal/Achilles tendon |
What purpose does the transverse arch serve? | support |
At what angles does the talar articular surface slope? | 33-40 degrees |
How do the malleoli lie in relation to each other? | lateral malleolus lies 15-20 degrees more posterior |
CR entry AP axial foot | 10 degrees posterior to base of 3rd metatarsal |
CR entry for foot projections | perp. to base of third metatarsal |
What degree of angulation is necessary to open the TMT and MTP joints on an axial foot? | 10 degrees posteriorly |
What type of filter could be used for a foot x-ray? | wedge |
At what angle to the IR should the foot be for an oblique? | 30 degrees |
What anatomy is best demonstrated on a medial oblique foot? | cuboid, metatarsals 4-5, sinus tarsi and lateral cuneiform |
What anatomy is best demonstrated on a lateral oblique foot? | joint space between metatarsals 1-2 and medial and intermediate cuneiform joint space |
Why is it better to do a lateromedial lateral foot projection? | the foot naturally falls into a true lateral position |