Board qualifying Flashcards
What is the ossification (in years) for a talonavicular coalition?
3-5 y/o
What is the ossification (in years) for a calcaneonavicular coalition?
8-12 y/o
What is the ossification (in years) for a talocalcaneal coalition?
12-16 y/o
List in order of ossification the common coalitions from youngest to oldest age groups
talonavicular (3-5 y/o)
calcaneonavicular (8-12 y/o)
talocalcaneal (12-16 y/o)
which radiographic view do you see a talonavicular coalition best in?
AP view
which radiographic view do you see a calcaneonavicular coaliton best in?
medial oblique view (and lateral view)
which radiographic view do you see a talocalcaneal coaliton best in?
Harris- beath view
How do you position for a Harris- beath view?
patient is erect;
- sole of the foot is flat on the cassette;
- central beam angled 45 deg toward the midline of the heel;
- 35 or 55 deg is used to better visualize other facets of sub-talar joint;
*demonstrates the body of the calcaneus, middle facet of the sub-talar Joint and the sustenaculum tali the best
What are isherwood projections good at visualizing?
subtalar joint
- the MO axial view –> middle/ posterior facets
- the lateral oblique axial –> posterior facet
- olibque plantar dorsal –> anterior facet
List the ASA classifications.
ASA 1- normal, healthy patient
ASA 2- mild, systemic dz (controlled HTN, DM)
ASA 3- severe systemic dz (uncontrolled DM)
ASA 4- critical condition constant threat to life
ASA 5- moribound, unexpected survival w/o sx
ASA 6- brain dead
*E- denotes emergency
What are the pre-op guidelines for aspirin?
hold 7-10 days prior to sx
due to irreversible COX inhibition activity
What are the pre-op guidelines for NSAIDs?
hold 3 days prior to sx
due to reversible COX inhibition activity
what are the preop guidelines for plavix (clopidogrel)?
hold 7-10 days prior to sx
due to irreversible anti-platelets
what are the pre-op guidelines for beta-blockers?
CONTINUE up to and including day of sx
what are the pre-op guidelines for Calcium channel-blockers?
CONTINUE up to and including day of sx
what are the pre-op guidelines for ACEi, diuretics, and ARBs?
HOLD morning of sx
increased risk of hypotension in sx