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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 - ✔✔4mm
Why is a solid 1.5mm Hex Driver included with the compression FT Screw
instrumentation?
To aid in screw removal
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,To increase torque when inserting the solof compression FT screws
To help countersink screws
To make the set look cool - ✔✔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 - ✔✔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 - ✔✔35-120mm by 5mm increments
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,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 - ✔✔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 - ✔✔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
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, head of a partially threaded screw to gain and maintain purchase in just the
near cortex - ✔✔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 - ✔✔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 - ✔✔Are tapered on the outer diameter
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