ABFAS BOARD EXAM ACTUAL EXAM 400+ QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS)
Properties of Calcium phosphate antibiotic beads - correct answer non exothermic
Must use powder
Peaks at 3 hours and then elutes over 72 hours
120 day shelf life
Most common 5th metatarsal fracture - correct answer Avulsion fracture (about 50% of 5th
met fractures)
normal IM between 4 and 5?
normal lateral bowing angle? - correct answer IM= 6.5-9.0
bowing angle=2.6
What is the Myerson procedure? - correct answer use of EHB in correction of HAV.
What is biologic fixation? - correct answer
stewart classification - correct answer 5th met base fracture
benefit of ropivicaine over bupivaine - correct answer less cardiotoxicity, but much more
expensive.
most common cause of peroneal spastic flatfoot? - correct answer tarsal coalition
What causes a local anesthetic to have faster onset? - correct answer Lower pKa
Where does the extensor apparatus originate/insert - correct answer There is no specific area
that it originates from or inserts
What is a geode in medical terms?? - correct answer A subchondral cyst
Insertion of EDB - correct answer Extensor apparatus near base of proximal phalanx.
changes to X-ray machine for fiberglass cast - correct answer increase mA by 1.5x
What motion unlocks the knee during gait cycle? - correct answer Pronation of the STJ, this
causes the femur to rotate laterally which will unlock the knee
Which inhaled anesthetic is the most cardioprotective? - correct answer isoflurane
What is the half life of heparin? - correct answer 6 hours
Difference between technetium and gallium - correct answer Technetium binds to
hydroxyapatite and is seen in areas of high bone turnover.
,ABFAS BOARD EXAM ACTUAL EXAM 400+ QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS)
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. - correct answer ASA class III:
specifically a pulmonary complication
How is LMWH excreted? - correct answer through the kidneys; should be avoided in those with
kidney failure
Which local anesthetic is lease likely to cause methemoglobinemia? - correct answer Marcaine
although is is very rare for the other local anesthetics anyway.
What does exposure mean in medical research? - correct 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? - correct answer Lag screws and dynamic compression
plates.
The lack of motion stimulates osteogenesis
Why is alcohol used to dilute phenol? - correct answer phenol is insoluble in water, but is
soluble in alcohol.
Should diuretics be held prior to surgery? - correct answer yes, hypotension is common in
surgery and taking a diuretic may exacerbate the hypotension
anticoagulant that is a direct thrombin inhibitor? - correct answer dabigatran
Term in a research study for all people who enter a study regardless of treatment, exposure, or
ability to complete the study? - correct answer study population
antibiotic for open fracture at a farm? - correct answer 10-20 million units of penicillin due to
possibility of clostridium contamination.
Why is thermal necrosis of bone problematic? - correct answer increased zone of resorption at
osteotomy site
met base osteotomy with high rate of dorsal malunion - correct answer crescentic osteotomy
, ABFAS BOARD EXAM ACTUAL EXAM 400+ QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS)
Correction of digiti quinti varus with V-y skin plasty often doesn't work due to... - correct
answer inability of V-Y plasty to correct the deformity adequately
When is midstance phase of gait? - correct answer opposite side toe off.
apex of deformity in anterior cavus foot with occur at which joint? - correct answer 1st met
cuneiform joint
effect on mu receptors with surgery?
What affect does this have on pain killers? - correct answer Mu receptor are up regulated, this
causes opioids to be more effective for pain control
most common complication with polycactyly treatment. - correct answer Removal of the wrong
extra digit.
-Need adequate pre-op planning and vascular assessment.
What are the stages of anesthesia? - correct answer 1. amnesia/analgesia
2. delirium
3. surgical anesthesia
4. overdose
What are the characteristics of stage 3 anesthesia? 4 planes - correct answer Surgical
anesthesia:
1) regular respiration, no eyelid reflex
2)slowed breathing
3)stops breathing, no laryngeal reflexes
4)intercostal paralysis, fully dilated pupils
Characteristics of moderate/conscious sedation - correct answer responds purposefully. Does
not require airway intervention
what is the least common polydactyly?
Which the is the most common? - correct answer Central polydactyly.
postaxial polydactyly is the most common
RATIONALES (VERIFIED ANSWERS)
Properties of Calcium phosphate antibiotic beads - correct answer non exothermic
Must use powder
Peaks at 3 hours and then elutes over 72 hours
120 day shelf life
Most common 5th metatarsal fracture - correct answer Avulsion fracture (about 50% of 5th
met fractures)
normal IM between 4 and 5?
normal lateral bowing angle? - correct answer IM= 6.5-9.0
bowing angle=2.6
What is the Myerson procedure? - correct answer use of EHB in correction of HAV.
What is biologic fixation? - correct answer
stewart classification - correct answer 5th met base fracture
benefit of ropivicaine over bupivaine - correct answer less cardiotoxicity, but much more
expensive.
most common cause of peroneal spastic flatfoot? - correct answer tarsal coalition
What causes a local anesthetic to have faster onset? - correct answer Lower pKa
Where does the extensor apparatus originate/insert - correct answer There is no specific area
that it originates from or inserts
What is a geode in medical terms?? - correct answer A subchondral cyst
Insertion of EDB - correct answer Extensor apparatus near base of proximal phalanx.
changes to X-ray machine for fiberglass cast - correct answer increase mA by 1.5x
What motion unlocks the knee during gait cycle? - correct answer Pronation of the STJ, this
causes the femur to rotate laterally which will unlock the knee
Which inhaled anesthetic is the most cardioprotective? - correct answer isoflurane
What is the half life of heparin? - correct answer 6 hours
Difference between technetium and gallium - correct answer Technetium binds to
hydroxyapatite and is seen in areas of high bone turnover.
,ABFAS BOARD EXAM ACTUAL EXAM 400+ QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS)
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. - correct answer ASA class III:
specifically a pulmonary complication
How is LMWH excreted? - correct answer through the kidneys; should be avoided in those with
kidney failure
Which local anesthetic is lease likely to cause methemoglobinemia? - correct answer Marcaine
although is is very rare for the other local anesthetics anyway.
What does exposure mean in medical research? - correct 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? - correct answer Lag screws and dynamic compression
plates.
The lack of motion stimulates osteogenesis
Why is alcohol used to dilute phenol? - correct answer phenol is insoluble in water, but is
soluble in alcohol.
Should diuretics be held prior to surgery? - correct answer yes, hypotension is common in
surgery and taking a diuretic may exacerbate the hypotension
anticoagulant that is a direct thrombin inhibitor? - correct answer dabigatran
Term in a research study for all people who enter a study regardless of treatment, exposure, or
ability to complete the study? - correct answer study population
antibiotic for open fracture at a farm? - correct answer 10-20 million units of penicillin due to
possibility of clostridium contamination.
Why is thermal necrosis of bone problematic? - correct answer increased zone of resorption at
osteotomy site
met base osteotomy with high rate of dorsal malunion - correct answer crescentic osteotomy
, ABFAS BOARD EXAM ACTUAL EXAM 400+ QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS)
Correction of digiti quinti varus with V-y skin plasty often doesn't work due to... - correct
answer inability of V-Y plasty to correct the deformity adequately
When is midstance phase of gait? - correct answer opposite side toe off.
apex of deformity in anterior cavus foot with occur at which joint? - correct answer 1st met
cuneiform joint
effect on mu receptors with surgery?
What affect does this have on pain killers? - correct answer Mu receptor are up regulated, this
causes opioids to be more effective for pain control
most common complication with polycactyly treatment. - correct answer Removal of the wrong
extra digit.
-Need adequate pre-op planning and vascular assessment.
What are the stages of anesthesia? - correct answer 1. amnesia/analgesia
2. delirium
3. surgical anesthesia
4. overdose
What are the characteristics of stage 3 anesthesia? 4 planes - correct answer Surgical
anesthesia:
1) regular respiration, no eyelid reflex
2)slowed breathing
3)stops breathing, no laryngeal reflexes
4)intercostal paralysis, fully dilated pupils
Characteristics of moderate/conscious sedation - correct answer responds purposefully. Does
not require airway intervention
what is the least common polydactyly?
Which the is the most common? - correct answer Central polydactyly.
postaxial polydactyly is the most common
