ARTHREX DEX 5 DAY IOT EXAM 190 QUESTIONS &
CORRECT ANSWERS LATEST 2025
When the surgeon is performing a DIP joint fusion and has inserted the double
ended kwire to the desired depth in the middle phalanx, how many millimeters
should be subtracted from the measured length of the kwire to account for
countersinking the screw head and compression at the fusion site?
1mm
2mm
4mm
None, it is not necessary to account for compression or countersinking the screw
head - ANSWER-4mm
Why is a solid 1.5mm Hex Driver included with the compression FT Screw
instrumentation?
To aid in screw removal
To increase torque when inserting the solof compression FT screws
To help countersink screws
To make the set look cool - ANSWER-To aid in screw removal
Which of the following is NOT a feature or a benefit of the 3.5mm mini
compression FT screw?
Variable stepped thread pitch
,Improved torque transmission through a hexaglobe recess
Conical shaped outer diameter to gain final compression
Headless
Cannulated - ANSWER-Conical shaped outer diameter to gain final compression
What are the screw lengths available in the 7.0,, X-large compression FT screw
system- (AR-8750S)?
20-50mm by 2mm increments, 55-90mm by 5 mm increments
35-120mm by 2mm increments
35-120mm by 5mm increments
35-140mm by 5mm increments - ANSWER-35-120mm by 5mm increments
True or False: one of the ways the compression FT screws achieve compression is
by having a large pitch on the leading end and smaller pitch on the trailing end -
ANSWER-true
Which of the following is NOT a feature or benefit of the 2.5mm micro
compression FT screw?
Variable stepped thread pitch
Improved torque transmission through a hexalobe recess
Self-tapping flutes
Headless
Cannulated - ANSWER-Improved torque transmission through a hexalobe recess
There are two main types of headless compression screws available on the
market. One is a "herbert" style screw that has threads at the leading end, a
,smooth shaft, and threads at the trailing end or head of the screw. The other type
is similar to the Arthrex compression FT screws that is fully threaded with variable
thread pitch to gain compression. True or False. The main advantage to using a
fully threaded screw with variable pitch is to gain purchase along the entire length
of the screw rather than depending on the head of a partially threaded screw to
gain and maintain purchase in just the near cortex - ANSWER-True
What are the lengths of the 2.5 micro compression FT screws?
8-14mm by 2mm increments, then 16-34mm by 1mm increments
8-14mm by 2mm increments, then 16-30mm by 1mm increments
8-14mm by 1mm increments, then 16-50mm by 2mm increments
8-14mm by 1mm increments, then 16-34mm by 2mm increments - ANSWER-8-
14mm by 1mm increments, then 16-50mm by 2mm increments
Besides the actual size of the larger compression FT screws, what is the key design
difference between the 5.0 and 7.0 compression FT screws compared to the
smaller compression FT screws?
Variable threaded pitch
Cannulated
Comes with a profile drill
Are tapered on the outer diameter
Headless design - ANSWER-Are tapered on the outer diameter
True or False: a 3.5 mini compression FT screws schieves a statically significant
higher maximum push-out when compared to an acumed acutrak 2 mini screw
and a synthes 3.0mm Hebert screw. This may lead to a better long term stability
and less likely screw backout/ - ANSWER-false
, When using a 3.5 mm DX SwiveLock® SL anchor in the metacarpal head for
reconstruction of the thumb UCL using SutureTape and a palmaris longus
autograft what size drill should be used?
3.2 mm
3.0 mm
3.5 mm
3.7 mm - ANSWER-3.5 mm
Before placing the second SwiveLock® anchor for a thumb UCL IB repair, the
thumb should be placed in:
Neutral
60 degrees of extension
30 degrees of flexion
60 degrees of flexion - ANSWER-30 degrees of flexion
What size graft should be used for a thumb UCL reconstruction when using the
3.5 DX SwiveLock® SL anchor?
4 mm
2 mm
5 mm
3.5 mm - ANSWER-2 mm
True or False: When small bone is encountered on the proximal phalanx when
performing a thumb UCL repair, a Mini PushLock® anchor may be substituted for
a 3.5 SwiveLock® anchor. - ANSWER-True
CORRECT ANSWERS LATEST 2025
When the surgeon is performing a DIP joint fusion and has inserted the double
ended kwire to the desired depth in the middle phalanx, how many millimeters
should be subtracted from the measured length of the kwire to account for
countersinking the screw head and compression at the fusion site?
1mm
2mm
4mm
None, it is not necessary to account for compression or countersinking the screw
head - ANSWER-4mm
Why is a solid 1.5mm Hex Driver included with the compression FT Screw
instrumentation?
To aid in screw removal
To increase torque when inserting the solof compression FT screws
To help countersink screws
To make the set look cool - ANSWER-To aid in screw removal
Which of the following is NOT a feature or a benefit of the 3.5mm mini
compression FT screw?
Variable stepped thread pitch
,Improved torque transmission through a hexaglobe recess
Conical shaped outer diameter to gain final compression
Headless
Cannulated - ANSWER-Conical shaped outer diameter to gain final compression
What are the screw lengths available in the 7.0,, X-large compression FT screw
system- (AR-8750S)?
20-50mm by 2mm increments, 55-90mm by 5 mm increments
35-120mm by 2mm increments
35-120mm by 5mm increments
35-140mm by 5mm increments - ANSWER-35-120mm by 5mm increments
True or False: one of the ways the compression FT screws achieve compression is
by having a large pitch on the leading end and smaller pitch on the trailing end -
ANSWER-true
Which of the following is NOT a feature or benefit of the 2.5mm micro
compression FT screw?
Variable stepped thread pitch
Improved torque transmission through a hexalobe recess
Self-tapping flutes
Headless
Cannulated - ANSWER-Improved torque transmission through a hexalobe recess
There are two main types of headless compression screws available on the
market. One is a "herbert" style screw that has threads at the leading end, a
,smooth shaft, and threads at the trailing end or head of the screw. The other type
is similar to the Arthrex compression FT screws that is fully threaded with variable
thread pitch to gain compression. True or False. The main advantage to using a
fully threaded screw with variable pitch is to gain purchase along the entire length
of the screw rather than depending on the head of a partially threaded screw to
gain and maintain purchase in just the near cortex - ANSWER-True
What are the lengths of the 2.5 micro compression FT screws?
8-14mm by 2mm increments, then 16-34mm by 1mm increments
8-14mm by 2mm increments, then 16-30mm by 1mm increments
8-14mm by 1mm increments, then 16-50mm by 2mm increments
8-14mm by 1mm increments, then 16-34mm by 2mm increments - ANSWER-8-
14mm by 1mm increments, then 16-50mm by 2mm increments
Besides the actual size of the larger compression FT screws, what is the key design
difference between the 5.0 and 7.0 compression FT screws compared to the
smaller compression FT screws?
Variable threaded pitch
Cannulated
Comes with a profile drill
Are tapered on the outer diameter
Headless design - ANSWER-Are tapered on the outer diameter
True or False: a 3.5 mini compression FT screws schieves a statically significant
higher maximum push-out when compared to an acumed acutrak 2 mini screw
and a synthes 3.0mm Hebert screw. This may lead to a better long term stability
and less likely screw backout/ - ANSWER-false
, When using a 3.5 mm DX SwiveLock® SL anchor in the metacarpal head for
reconstruction of the thumb UCL using SutureTape and a palmaris longus
autograft what size drill should be used?
3.2 mm
3.0 mm
3.5 mm
3.7 mm - ANSWER-3.5 mm
Before placing the second SwiveLock® anchor for a thumb UCL IB repair, the
thumb should be placed in:
Neutral
60 degrees of extension
30 degrees of flexion
60 degrees of flexion - ANSWER-30 degrees of flexion
What size graft should be used for a thumb UCL reconstruction when using the
3.5 DX SwiveLock® SL anchor?
4 mm
2 mm
5 mm
3.5 mm - ANSWER-2 mm
True or False: When small bone is encountered on the proximal phalanx when
performing a thumb UCL repair, a Mini PushLock® anchor may be substituted for
a 3.5 SwiveLock® anchor. - ANSWER-True
