Test-MEDED - ACE - Compression FT screw

When the surgeon is performing a DIP joint fusion and has insert 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

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

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

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

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

• -False

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

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

• -True

• -False

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

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

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/

• -True

• -False