ABFAS Exam Questions And Answers
With Complete Solution 2025/2026
Diastasis for Lisfranc = a fracture is present - 2-5 mm of diastis betwen 1st and second mt
base
Chronic lisfrancs--->ct=1 mm diastasis betwen 1st and 2nd mt or an increase of more than
15 degrees in the tarso-metatarsal joint
signs of lisfranc on xray - fleck sign (1 and 2 met bases)
first ray elevated
arch flattens
MCC direction lisfranc displaces - Dorsal and Lateral
When to sx correct lisfranc - >2mm displaced
wait 14 days if too much edema
Approach to ORIF lisfranc fx - middle cunii start proximal superior medical >to the base of
the 2nd mt possibly, 3rd mt.
the first lag screw=KEY to REDUCTION. T
if needed do a few more lag screws from the the bases metatarsals >cuni.
If cuni instability **screw across the cunis.communition=plates.
Rules for bunions in the Juvenile pt - 14-16 yrs. Ideal time frame to do sx for them is near
skel. Maturity 11-15 yoa.
Don't do anything joint destructive /don't remove the fib sesamoid.
take mt adductus into consideration in a peds patient.
Transpositional osteotomies ideal e.g. austin, kalish, offset V for rectus foottype and mod.
IMA. But if they have Mt Adductus, really high IM or really high PASA
Distal metaphyseal peds osteotomies - Austin, offset v, reverdin, mitchell, wilson and
peabody. Mitchell and wilson SE including shortening, transfer lesions, elevatus,
metatarsalgia
How to fix bunion in a peds pt with IM >15 - Base procedure aka proximal metaphyseal
osteotomy.