DEX IOT FINAL TEST QUESTIONS AND VERIFIED
ANSWERS
What does the new depth gauge measure for Troch Nail? - Answers - Reaming depth -
cortical wall to tip of kwire
Lag Screw depth - middle of nail to kwire tip
What does the red line mean on the shaft of the inserter when inserting the lag screw? -
Answers - shows compression cannot be reached due to the lag screw not being
inserted far enough. continue to turn blue handle to insert lag screw into femur further.
How do you identify left lag screw? - Answers - left lag screw is notched
How to activate locking tool in lag screw inserter - Answers - pull and twist gold knob
counterclockwise to engage black handle. Black ring should be visible. Hold blue T
handle and turn black T handle clockwise until torque limiter clicks
Purpose of anti-rotation bar - Answers - Provides provisional anti rotation to prevent loss
of reduction during lag screw insertion. Allows selection and placement after final lag
screw placement
Femoral head rotation management
Length difference between lag screw and AR Screw - Answers - AR screw 10mm
shorter than lag screw
Types of troch FX - Answers - neck, intertrochanteric, subtrochanteric
When/how do you insert bone graft ina troch nail case - Answers - Stop advancing lag
screw 10mm from final fixation is.
Remove guide pin, insert delivery cannula into driver shaft.
Match cannula measurement mark to lag screw size.
Insert 1cc bone graft
Plunger to insert graft
repeat for rest of bone graft 1cc at a time (3 total cc)
Finish inserting lag screw
Bio for Troch - Answers - Bonesync - drillable collagen mixed with PRP
Quickset - structural support
Allosync - healing properties
Plate for Valgus Pilon Fx - Answers - Anterolateral Plate
Treatment principals for pilon FX fixation - Answers - Temporary limb stabilization
ANSWERS
What does the new depth gauge measure for Troch Nail? - Answers - Reaming depth -
cortical wall to tip of kwire
Lag Screw depth - middle of nail to kwire tip
What does the red line mean on the shaft of the inserter when inserting the lag screw? -
Answers - shows compression cannot be reached due to the lag screw not being
inserted far enough. continue to turn blue handle to insert lag screw into femur further.
How do you identify left lag screw? - Answers - left lag screw is notched
How to activate locking tool in lag screw inserter - Answers - pull and twist gold knob
counterclockwise to engage black handle. Black ring should be visible. Hold blue T
handle and turn black T handle clockwise until torque limiter clicks
Purpose of anti-rotation bar - Answers - Provides provisional anti rotation to prevent loss
of reduction during lag screw insertion. Allows selection and placement after final lag
screw placement
Femoral head rotation management
Length difference between lag screw and AR Screw - Answers - AR screw 10mm
shorter than lag screw
Types of troch FX - Answers - neck, intertrochanteric, subtrochanteric
When/how do you insert bone graft ina troch nail case - Answers - Stop advancing lag
screw 10mm from final fixation is.
Remove guide pin, insert delivery cannula into driver shaft.
Match cannula measurement mark to lag screw size.
Insert 1cc bone graft
Plunger to insert graft
repeat for rest of bone graft 1cc at a time (3 total cc)
Finish inserting lag screw
Bio for Troch - Answers - Bonesync - drillable collagen mixed with PRP
Quickset - structural support
Allosync - healing properties
Plate for Valgus Pilon Fx - Answers - Anterolateral Plate
Treatment principals for pilon FX fixation - Answers - Temporary limb stabilization
