QUESTIONS WITH SOLUTIONS GRADED A+
◉ Most common 5th metatarsal fracture. Answer: Avulsion fracture
(about 50% of 5th met fractures)
◉ normal IM between 4 and 5?
normal lateral bowing angle. Answer: IM= 6.5-9.0
bowing angle=2.6
◉ What is the Myerson procedure. Answer: use of EHB in correction
of HAV.
◉ What is biologic fixation?. Answer:
◉ stewart classification. Answer: 5th met base fracture
◉ benefit of ropivicaine over bupivaine. Answer: less cardiotoxicity,
but much more expensive.
,◉ most common cause of peroneal spastic flatfoot?. Answer: tarsal
coalition
◉ What causes a local anesthetic to have faster onset?. Answer:
Lower pKa
◉ Where does the extensor apparatus originate/insert. Answer:
There is no specific area that it originates from or inserts
◉ What is a geode in medical terms??. Answer: A subchondral cyst
◉ Insertion of EDB. Answer: Extensor apparatus near base of
proximal phalanx.
◉ changes to X-ray machine for fiberglass cast. Answer: increase mA
by 1.5x
◉ What motion unlocks the knee during gait cycle?. Answer:
Pronation of the STJ, this causes the femur to rotate laterally which
will unlock the knee
◉ Which inhaled anesthetic is the most cardioprotective?. Answer:
isoflurane
,◉ What is the half life of heparin?. Answer: 6 hours
◉ Difference between technetium and gallium. Answer: Technetium
binds to hydroxyapatite and is seen in areas of high bone turnover.
Gallium binds to WBC's and is seen in areas of increased
inflammation.
If used together, Technetium should be given first.
◉ Which ASA class has 2-3x risk for post-op complications.. Answer:
ASA class III: specifically a pulmonary complication
◉ How is LMWH excreted?. Answer: through the kidneys; should be
avoided in those with kidney failure
◉ Which local anesthetic is lease likely to cause
methemoglobinemia?. Answer: Marcaine
although is is very rare for the other local anesthetics anyway.
◉ What does exposure mean in medical research?. Answer: Any
factors or characteristics that may explain/predict a certain
outcome.
, ◉ What types of fixation provide compression and also
osteogenesis.
How do things provide osteogenesis?. Answer: Lag screws and
dynamic compression plates.
The lack of motion stimulates osteogenesis
◉ Why is alcohol used to dilute phenol?. Answer: phenol is insoluble
in water, but is soluble in alcohol.
◉ Should diuretics be held prior to surgery?. Answer: yes,
hypotension is common in surgery and taking a diuretic may
exacerbate the hypotension
◉ anticoagulant that is a direct thrombin inhibitor?. Answer:
dabigatran
◉ Term in a research study for all people who enter a study
regardless of treatment, exposure, or ability to complete the study?.
Answer: study population