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DEX IOT Study Exam Questions Complete Solutions New Update What fracture types is the TightRope XP indicated for? - Answers - Weber B & C What are the dimensions of the TightRope XP's.... 1. Oblong button 2. Round button - Answers - 1. Oblong - 3.5 x 13 mm 2. Round - 6.5 mm What is the ...

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  • January 17, 2025
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  • 2024/2025
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DEX IOT Study Exam Questions
Complete Solutions New Update
What fracture types is the TightRope XP indicated for? - Answers -✔✔ Weber B & C

What are the dimensions of the TightRope XP's....
1. Oblong button
2. Round button - Answers -✔✔ 1. Oblong - 3.5 x 13 mm
2. Round - 6.5 mm

What is the mechanism of injury for syndesmotic injuries? - Answers -✔✔ Forced
external rotation of the foot

What is the structure associated with the AiTFL on the Tibia? - Answers -✔✔ Chaput's
Tubercle

What is the structure associated with the AiTFL on the Fibula? - Answers -✔✔
Wagstaffe's tubercle

What is the shelf life of Amnion Matrix? - Answers -✔✔ 5 years

What is the shelf life of Amnion Viscous? - Answers -✔✔ 2 years

What is the volume range for autologous fluid that can be processed in the Angel? -
Answers -✔✔ 40 cc - 180 cc

What are the storage requirements for ArthroCell?
1. Storage temperature
2. Shelf Life - Answers -✔✔ 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? - Answers -✔✔ Acellular dermal
matrix

Functions as a scaffold of collagen, elastin, and growth factors

MatraCell process for sterilization removes ____ % of DNA - Answers -✔✔ >97% of
DNA removed

What are the storage requirements for ArthroFlex?
1. Storage temperature
2. Shelf life - Answers -✔✔ 1. Room temp; ready-to-use

,2. 3-year shelf-life

What are the storage requirements for BioCartilage?
1. Storage temperature
2. Shelf life - Answers -✔✔ 1. Room temp storage
2. 5-year shelf life

What are the storage requirements
for Cartiform?
1. Storage temperature
2. Shelf life - Answers -✔✔

How much spacing is between the TightRope XP holes of the Buttress plate? What is
the hole spacing of a standard plate? - Answers -✔✔ 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? - Answers -✔✔ 35° of angulation

How thick is the TightRope Buttress Plate? - Answers -✔✔ 1.5 mm thick

How should the 2-Hole Buttress Plate be positioned on the lateral fibula? - Answers -
✔✔ Distal hole should be centered 1.5-2 cm proximal to the tibial plafond

How big are the TightRope XP gudiewires? - Answers -✔✔ 0.049 in / 1.2 mm

How many cycles does the TightRope persist compared to a 4.5 Synthes screw? -
Answers -✔✔ TR: 27,000 cycles to failure
4.5 screw: 11,000 cycles to failure

How many distal screws can be placed through the FibuLock? - Answers -✔✔ 3
screws: 2 lateral-medial, 1 anterior-posterior

Where should the incision be made for the FibuLock entry point? - Answers -✔✔ 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
- Answers -✔✔ 3.0 nail --> 5 mm
3.8 nail --> 6 mm

What does the Offset guide do in the FibuLock instrument set? - Answers -✔✔ Allows
for drilling of guide wires 2.5 or 5 mm from an initial K-wire position

What is Tom, Dick, ANd Harry? - Answers -✔✔ 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 - Answers -✔✔ 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
- (D): All of the above - Answers -✔✔ (D) All of the above

What is another name for the Tarsal-Metatarsal Joint of the foot?

- (A): Charcotʼs Joint
- (B): The Hinged Joint
- (C): The PIP Joint
- (D): Lisfrancʼs Joint - Answers -✔✔ TMT Joint of the foot =

(D) Lisfranc's Joint

Which of the following terms is NOT used to describe the malposition of a fracture?

- (A): Angulation
- (B): Translation
- (C): Shortening
- (D): Comminution - Answers -✔✔ (D) Comminution

For an ankle fracture classified as a Danis-Weber type B a surgeon needs to be
concerned about an unstable syndesmosis joint.
- (A): True
- (B): False - Answers -✔✔ (A) True

, A surgeonʼs start point with FibuLock is too lateral. What deformity at the fracture is
possible?

- (A): Varus
- (B): Valgus
- (C): Recurvatum (apex-posterior)
- (D): Procurvatum (apex-anterior) - Answers -✔✔ (A) Varus

Hyperextension of the MTP and Flexion of the PIP joints defines which of the following
deformities?

- (A): Mallet Toe
- (B): Hammer Toe
- (C): Tiger Toe
- (D): All of the above - Answers -✔✔ (B) Hammer Toe

What joint between the calcaneus and the talus supports most of the bodyweight?

- (A): Anterior Facet
- (B): Middle Facet
- (C): Posterior Facet
- (D): Inferior Facet - Answers -✔✔ C. Posterior Facet

The normal Hallux Valgus Angle (HVA) is:

- (A): < 5°
- (B): < 9°
- (C): < 15°
- (D): < 20° - Answers -✔✔ Normal HVA =

C. < 15°

The normal IMA is:

- (A): 8° - 12°
- (B): < 9°
- (C): 15° - 20°
- (D): 10° - 15°
- (E): 9° - 15° - Answers -✔✔ Normal IMA =

(B) < 9°

Hallux varus is usually due to the following pitfalls after hallux valgus correction
EXCEPT:
- (A): Excessive resection of medial eminence
- (B): Overcorrection of IMA

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