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20 Cards in this Set
- Front
- Back
main views used to evaluate hands for arthritis
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PA, norgaard view (AP-oblique)
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advantages of the norgraad view
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best to see radial aspects of the prox phalynx, triquetrum, pisiform
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where do earliest changes of arthritis occur in hands
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radial aspects of proximal phylanges, triquetrum, pisiform
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which shoulder view is best to look for osteophytes
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external rotation
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best shoulder position to evaluate for hill sachs
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internal rotation
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what is the criteria for true joint space narrowing in the knee
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if joint space is less than 3mm, then narrowing is from cartilage loss
if >3mm, may be from ligamentous instability |
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how to tell the difference between the medial and lateral tibial plateau on lateral view of knee
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medial plateau slopes downwards
lateral plateau is flat |
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proper way to position the AP view of hip
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internal rotation
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most commonly affected portion of the SI joints
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anterior and inferior
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which conditions are associated with dynamic instability of C1 on C2
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all inflammatory arthropaties, especially RA, 2/2 laxity of transverse ligament
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another name for adduction injury of the ankle
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inversion
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order of ligamentous injury of the ankle in an inversion injury
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anterior talofibular ligament
calcaneo-fibular ligamnent posterior talofibular ligament (rare) |
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another name for an eversion injury
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abduction
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describe process of an eversion ankle injury
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ant tib-fib ligament
obliquely oriented fx ofo lateral malleolus talus displaces lat mall frag (gets avulsed by post tib-fib ligament) post mall is avulsed med mall fx or deltoid ligament tear |
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mechanism of maisonneuve fx
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abduction (inversion) injury
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nml relationship between tibia and fibula on XR
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on oblique view, 1mm overlap of tim and fib on oblique view
on AP, <1cm tib/fib overlap |
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structures comprising the syndesmosis
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anterior and posterior tib/fib ligaments
interosseous ligament |
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things to clue you into a possible maisonneuve fx on ankle film
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isolated fx of posterior tibial margin
isolated displaced medial mall fx widening of med/lat clear space of ankle |
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mechanism of tillaux fx
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external rotation (abduction) with avulsion fx of anterior tibial tubercle by anterior tibiofibular ligament
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what SH classification does tillaux fx fall under
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SH III
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