DEX IOT Day 1 Exam Questions and
Answers
Lauge-Hansen Classification - Answer -Supination Adduction- Weber A; Supination
external rotation- Weber B. Pronation external rotation- Weber C, pronation-abduction-
Maisonneuve
Lauge-Hansen Classifications which indicate syndesmotic issues - Answer -PER and
PAB
lauge hansen possibly indicating a lateral or posterior plate - Answer -SER
lateral malleolus surgical thinking - Answer -length and rotation, fibula is often short and
need to get it out to length
syndesmosis surgical thinking - Answer -perfect reduction, comminution reduction and a
few anatomic clues
medial malleolus surgical thinking - Answer -anatomic joint surface, tough when
fragment is small, medial cortex comminution makes it especially hard
posterior malleolus surgical thinking - Answer -should i fix it? literature says yes, fix it
from front or back? back - direction reduction fixation, but incision, front = indirect
reduction from front, anatomic joint? use nano!
how many ankle fractures have a taller OCD - Answer -70-80% (78%)
great options for OCDs - Answer -nano and biocartilage
Wagstaffes tubercle - Answer -fibular insertion of the AITFL on the anterior portion of
the medial malleolus
Chaput's Tubercle - Answer -insertion point of the AITFL on the anterotalar portion of
the tibia
how many ankle fractures/sprains in 2018, what % have syndesmotic injuries, maximum
number of tightropes? - Answer -270,000, 25%, 112,500
degree of cutout for tightrope - Answer -35 degrees
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