DEX FULL QUESTIONS AND CORRECT
ANSWERS PROFESSIONAL PREPARATION
MATERIAL
●● What does the red line mean on the shaft of the inserter when
inserting the lag screw?
Answer: 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?
Answer: left lag screw is notched
●● How to activate locking tool in lag screw inserter
Answer: 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
Answer: 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
Answer: AR screw 10mm shorter than lag screw
●● Types of troch FX
Answer: neck, intertrochanteric, subtrochanteric
●● When/how do you insert bone graft ina troch nail case
Answer: 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
Answer: Bonesync - drillable collagen mixed with PRP
Quickset - structural support
Allosync - healing properties
●● Plate for Valgus Pilon Fx
ANSWERS PROFESSIONAL PREPARATION
MATERIAL
●● What does the red line mean on the shaft of the inserter when
inserting the lag screw?
Answer: 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?
Answer: left lag screw is notched
●● How to activate locking tool in lag screw inserter
Answer: 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
Answer: 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
Answer: AR screw 10mm shorter than lag screw
●● Types of troch FX
Answer: neck, intertrochanteric, subtrochanteric
●● When/how do you insert bone graft ina troch nail case
Answer: 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
Answer: Bonesync - drillable collagen mixed with PRP
Quickset - structural support
Allosync - healing properties
●● Plate for Valgus Pilon Fx
