2
DEX IOT Exam Study Questions with precise detailed
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answers
What fracture types is the TightRope XP indicated for? - ✔✔Weber B & C
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What are the dimensions of the TightRope XP's....
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1. Oblong button
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2. Round button - ✔✔1. Oblong - 3.5 x 13 mm
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2. Round - 6.5 mm
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What is the mechanism of injury for syndesmotic injuries? - ✔✔Forced external rotation of
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the foot ||
What is the structure associated with the AiTFL on the Tibia? - ✔✔Chaput's Tubercle
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What is the structure associated with the AiTFL on the Fibula? - ✔✔Wagstaffe's tubercle
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What is the shelf life of Amnion Matrix? - ✔✔5 years
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What is the shelf life of Amnion Viscous? - ✔✔2 years
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What is the volume range for autologous fluid that can be processed in the Angel? - ✔✔40
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cc - 180 cc
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What are the storage requirements for ArthroCell?
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,2
1. Storage temperature
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2. Shelf Life - ✔✔1. -65° C (must be used within 4 hours after thawing)
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2. 2-year shelf life
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What is ArthroFlex and what is its primary function? - ✔✔Acellular dermal matrix
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Functions as a scaffold of collagen, elastin, and growth factors
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MatraCell process for sterilization removes ____ % of DNA - ✔✔>97% of DNA removed
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What are the storage requirements for ArthroFlex?
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1. Storage temperature
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2. Shelf life - ✔✔1. Room temp; ready-to-use
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2. 3-year shelf-life
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What are the storage requirements for BioCartilage?
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1. Storage temperature
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2. Shelf life - ✔✔1. Room temp storage
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2. 5-year shelf life
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What are the storage requirements
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for Cartiform?
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1. Storage temperature
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2. Shelf life - ✔✔
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,2
How much spacing is between the TightRope XP holes of the Buttress plate? What is the
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hole spacing of a standard plate? - ✔✔Buttress plate - 22 mm
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Standard plate - 16 mm || || || ||
How many degrees of angulation does the Buttress Plate allow for anatomic placement of
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the TightRope XP implants? - ✔✔35° of angulation
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How thick is the TightRope Buttress Plate? - ✔✔1.5 mm thick
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How should the 2-Hole Buttress Plate be positioned on the lateral fibula? - ✔✔Distal hole
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should be centered 1.5-2 cm proximal to the tibial plafond
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How big are the TightRope XP gudiewires? - ✔✔0.049 in / 1.2 mm
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How many cycles does the TightRope persist compared to a 4.5 Synthes screw? - ✔✔TR:
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27,000 cycles to failure || || ||
4.5 screw: 11,000 cycles to failure
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How many distal screws can be placed through the FibuLock? - ✔✔3 screws: 2 lateral-
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medial, 1 anterior-posterior || ||
Where should the incision be made for the FibuLock entry point? - ✔✔1 cm distal to the tip
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of the fibula
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To what diameters do the 3.0 and 3.8 mm FibuLock nails expand to after talon actuation -
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✔✔3.0 nail --> 5 mm || || || ||
3.8 nail --> 6 mm
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, 2
What does the Offset guide do in the FibuLock instrument set? - ✔✔Allows for drilling of
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guide wires 2.5 or 5 mm from an initial K-wire position
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What is Tom, Dick, ANd Harry? - ✔✔Mnemonic for remembering the location of tissue on
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the medial side of the ankle from anterior to posterior
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Tom = tibialis posterior
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Dick = flexor digitorum longus
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A = posterior tibial artery
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N = tibial nerve
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Harry = flexor hallucis longus || || || ||
deep posterior tendons
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Which of the following toe deformities includes hyperextension of the MTP joint, flexion of
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the PIP joint, and flexion of the DIP joint?
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- (A): Hammer Toe
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- (B): Claw Toe
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- (C): Mallet Toe - ✔✔MTP: Hyper extension + PIP/DIP: Flexion =
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(B) Claw Toe
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Lisfranc injuries are commonly due to which of the following mechanism(s)?
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- (A): Motor vehicle accidents
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- (B): Falls from heights
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- (C): Athletic injuries
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DEX IOT Exam Study Questions with precise detailed
|| || || || || || || ||
answers
What fracture types is the TightRope XP indicated for? - ✔✔Weber B & C
|| || || || || || || || || || || || ||
What are the dimensions of the TightRope XP's....
|| || || || || || ||
1. Oblong button
|| ||
2. Round button - ✔✔1. Oblong - 3.5 x 13 mm
|| || || || || || || || || ||
2. Round - 6.5 mm
|| || || ||
What is the mechanism of injury for syndesmotic injuries? - ✔✔Forced external rotation of
|| || || || || || || || || || || || || ||
the foot ||
What is the structure associated with the AiTFL on the Tibia? - ✔✔Chaput's Tubercle
|| || || || || || || || || || || || ||
What is the structure associated with the AiTFL on the Fibula? - ✔✔Wagstaffe's tubercle
|| || || || || || || || || || || || ||
What is the shelf life of Amnion Matrix? - ✔✔5 years
|| || || || || || || || || ||
What is the shelf life of Amnion Viscous? - ✔✔2 years
|| || || || || || || || || ||
What is the volume range for autologous fluid that can be processed in the Angel? - ✔✔40
|| || || || || || || || || || || || || || || || ||
cc - 180 cc
|| || ||
What are the storage requirements for ArthroCell?
|| || || || || ||
,2
1. Storage temperature
|| ||
2. Shelf Life - ✔✔1. -65° C (must be used within 4 hours after thawing)
|| || || || || || || || || || || || || ||
2. 2-year shelf life
|| || ||
What is ArthroFlex and what is its primary function? - ✔✔Acellular dermal matrix
|| || || || || || || || || || || ||
Functions as a scaffold of collagen, elastin, and growth factors
|| || || || || || || || ||
MatraCell process for sterilization removes ____ % of DNA - ✔✔>97% of DNA removed
|| || || || || || || || || || || || ||
What are the storage requirements for ArthroFlex?
|| || || || || ||
1. Storage temperature
|| ||
2. Shelf life - ✔✔1. Room temp; ready-to-use
|| || || || || || ||
2. 3-year shelf-life
|| ||
What are the storage requirements for BioCartilage?
|| || || || || ||
1. Storage temperature
|| ||
2. Shelf life - ✔✔1. Room temp storage
|| || || || || || ||
2. 5-year shelf life
|| || ||
What are the storage requirements
|| || || || ||
for Cartiform?
||
1. Storage temperature
|| ||
2. Shelf life - ✔✔
|| || || ||
,2
How much spacing is between the TightRope XP holes of the Buttress plate? What is the
|| || || || || || || || || || || || || || || ||
hole spacing of a standard plate? - ✔✔Buttress plate - 22 mm
|| || || || || || || || || || ||
Standard plate - 16 mm || || || ||
How many degrees of angulation does the Buttress Plate allow for anatomic placement of
|| || || || || || || || || || || || || ||
the TightRope XP implants? - ✔✔35° of angulation
|| || || || || || ||
How thick is the TightRope Buttress Plate? - ✔✔1.5 mm thick
|| || || || || || || || || ||
How should the 2-Hole Buttress Plate be positioned on the lateral fibula? - ✔✔Distal hole
|| || || || || || || || || || || || || || ||
should be centered 1.5-2 cm proximal to the tibial plafond
|| || || || || || || || ||
How big are the TightRope XP gudiewires? - ✔✔0.049 in / 1.2 mm
|| || || || || || || || || || || ||
How many cycles does the TightRope persist compared to a 4.5 Synthes screw? - ✔✔TR:
|| || || || || || || || || || || || || || ||
27,000 cycles to failure || || ||
4.5 screw: 11,000 cycles to failure
|| || || || ||
How many distal screws can be placed through the FibuLock? - ✔✔3 screws: 2 lateral-
|| || || || || || || || || || || || || ||
medial, 1 anterior-posterior || ||
Where should the incision be made for the FibuLock entry point? - ✔✔1 cm distal to the tip
|| || || || || || || || || || || || || || || || ||
of the fibula
|| || ||
To what diameters do the 3.0 and 3.8 mm FibuLock nails expand to after talon actuation -
|| || || || || || || || || || || || || || || || ||
✔✔3.0 nail --> 5 mm || || || ||
3.8 nail --> 6 mm
|| || || ||
, 2
What does the Offset guide do in the FibuLock instrument set? - ✔✔Allows for drilling of
|| || || || || || || || || || || || || || || ||
guide wires 2.5 or 5 mm from an initial K-wire position
|| || || || || || || || || ||
What is Tom, Dick, ANd Harry? - ✔✔Mnemonic for remembering the location of tissue on
|| || || || || || || || || || || || || || ||
the medial side of the ankle from anterior to posterior
|| || || || || || || || ||
Tom = tibialis posterior
|| || ||
Dick = flexor digitorum longus
|| || || ||
A = posterior tibial artery
|| || || ||
N = tibial nerve
|| || ||
Harry = flexor hallucis longus || || || ||
deep posterior tendons
|| ||
Which of the following toe deformities includes hyperextension of the MTP joint, flexion of
|| || || || || || || || || || || || || ||
the PIP joint, and flexion of the DIP joint?
|| || || || || || || ||
- (A): Hammer Toe
|| || ||
- (B): Claw Toe
|| || ||
- (C): Mallet Toe - ✔✔MTP: Hyper extension + PIP/DIP: Flexion =
|| || || || || || || || || || ||
(B) Claw Toe
|| ||
Lisfranc injuries are commonly due to which of the following mechanism(s)?
|| || || || || || || || || ||
- (A): Motor vehicle accidents
|| || || ||
- (B): Falls from heights
|| || || ||
- (C): Athletic injuries
|| || ||
