ABFAS HAV Procedures with Complete
Solutions
________ joint is capable of being placed in a rectus position, but returns to abnormal
pom - ANSWER-Tracking
_____________ joint is not flexible enough to be put through range of motion in rectus
position - ANSWER-Trackbound
(Z-Scarf) The proximal metatarsal guide pin is inserted 2 mm from the inferior surface of
the bone and driven parallel to the first pin 10 to 15 degrees plantarly, and 5 degrees
proximally, will have what effect on the metatarsal trajectory? - ANSWER-plantarflexion
of the metatarsal head fragment as it is displaced laterally when bony translation is
completed
A significant and specific contraindication of Mitchell is an individual with a - ANSWER-
normal or short first metatarsal segment.
Absolute contraindication of an opening base wedge osteotomy (HAV) - ANSWER-long
first metatarsal
Antitroughing techniques (SCARF) used in the past include - ANSWER-medial strut
transverse cortical bone grafting at the distal osteotomy site,
insertion of a transverse 2.0- or 2.4-mm screw between the two distal osteotomy
fragments,
use of a 2.0-mm three-hole plate.
Antitroughing techniques used in the past include - ANSWER-medial strut transverse
cortical bone grafting at the distal osteotomy site
insertion of a transverse 2.0- or 2.4-mm screw between the two distal osteotomy
fragments,
2.0-mm three-hole plate
Austin bunionectomy with Youngswick modification potential factors that could lead to
hallux varus - ANSWER-loss of the sagittal groove and medial shoulder of the
metatarsal
overcorrection with lateral transposition of the capital fragment
, weakening of lateral structures by lateral release resulted in a neat negative
intermetatarsal angle.
Bone ________ is created when the osteotomy is performed mostly in diaphyseal bone
allowing the displaced cortices of bone to collapse into the medullary canal causing
elevation of the distal fragment - ANSWER-troughing
Common complications with the standard SCARF osteotomy procedure - ANSWER-
Troughing
stress fractures
Complication associated with fusing the first MPJ in greater than 20° of abduction -
ANSWER-tripled the incidence of *hallux interphalangeal arthritis*
Current antitroughing techniques include - ANSWER-utilization of a small 2.5- or 3.0-
mm headless screw inserted from proximal to the distal osteotomy site into the first
metatarsal head seems to provide sufficient stability of the osteotomy site to prevent
elevation.
Difference between mitchell and hohman procedure - ANSWER-Mitchel procedure
incorporates a lateral cortical shelf of bone
During a crescentic osteotomy (bunion) procedure, if the blade is oriented medially,
what will occur? - ANSWER-then dorsiflexion will occur with translation of the
osteotomy.
During a crescentic osteotomy (bunion) procedure; if the blade is oriented laterally, what
will occur? - ANSWER-then plantarflexion of the distal segment will occur, with
reduction of the intermetatarsal angle.
During a traditional chevron osteotomy to correct a hallux abductovalgus with a hallux
limitus component, how must the osteotomy be angled for maintenance of length is
desired - ANSWER-kwire is directed perpendicular to the long axis of the first
metatarsal
During a traditional chevron osteotomy to correct a hallux abductovalgus with a hallux
limitus component, how must the osteotomy be angled to produce both lengthening and
plantarflex of the capital fragment? - ANSWER-proximal-medial dorsal and distal-lateral
plantar
During a traditional chevron osteotomy to correct a hallux abductovalgus with a hallux
limitus component, how must the osteotomy be angled to produce both shortening and
plantarflexion of the capital fragment? - ANSWER-distal-medial dorsal and proximal-
lateral plantar.
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