DEX IOT Review
What is the major difference between Arthrex PARS and competitor PARS systems? -
ANSLocking FiberWire stitch configuration (stronger than simple transverse suture passage)
Where does the sural nerve cross the lateral border of the achilles tendon? (average) - ANS57
mm proximal to the insertion; or 9.8 cm from the calcaneal tuberosity according to some
cadaveric studies
Where does a midsubstance achilles rupture typically occur? - ANSdiminished vascular
watershed region (2-6 cm proximal to the insertion)
When inserting the PARS jig, what position should the foot be in? - ANSresting plantarflexion
and neutral rotation
How proximal is the first PARS needle insertion relative to the superior calcaneus? (average) -
ANS110 mm (97-120mm)
How proximal is the 5th PARS needle insertion relative to the superior calcaneus? (average) -
ANS93.6 mm (82-105mm)
What type of rotation (internal vs external) may reduce the risk of penetrating the sural nerve
with PARS needle passage? - ANSExternal (internal increases the chances)
What procedures are commonly done in conjunction with Spring Ligament IB? (in descending
order) - ANS1) FDL Transfer to navicular (P -> D)
1) Resection of diseased Posterior Tibial Tendon
2) Medializing calc osteotomy
3) Gastroc recession
4) Cotton osteotomy (opening wedge med. cuneiform)
5) Lapidus (first metatarsocuneiform arthrodesis)
6) Lateral column lengthening calc osteotomy
When doing the blind-tunnel tenodesis technique, when should the surgeon measure the
diameter of the tendon? - ANSafter the tendon has been whipstitched**
Which arthrex bone void solution provides cell, signal and scaffold? - ANSArthrocell bone
allograft
Arthrocell allograft contains a cellular component referred to as MIAMI cells. What does the
acronym MIAMI stand for? - ANSMarrow Isolated Adult multi-lineage inducible cells
, Which of our bone void fillers are composed of 100% DBM? - ANSAllosync Cortical Fibers
Allosync Expand cortical fibers
Allosync Pure
Allosync Cancellous sponges (strips, cubes, 12x3 button)
What are the three zones of the scaphoid? - ANSDistal pole, waist, proximal pole
Surgical treatment is indicated for which of the following findings in scaphoid fractures?
A. Displacement greater than 1mm
B. Angulation greater than 15 degrees
C. Comminuted fractures
D. All the above - ANSD. All the above
Which fibers of the scapholunate interosseous ligament are the strongest and most important to
wrist function? - ANSDorsal
A cotton osteotomy is an osteotomy of which bone of the foot? - ANSMedial Cuneiform
What is the order of screw placement in the anterior ankle fusion plate? - ANS1. Talus
locking/non-locking screw fixation
2. Tibia oblong compression hole non-locking screw fixation
3. Anatomic compression hole screw fixation,
4. Final fixation with tibia locking/non locking screws
At what stage of flatfoot deformity is an ankle fusion often indicated? - ANSStage 4
All of the following are components of flatfoot deformity, EXCEPT:
A. Loss of longitudinal arch
B. lateral translation of the navicular on the talus
C. Valgus tilt of the calcaneous
D. Elevation of the talar head
E. Shortening of the lateral column - ANSD. Elevation of the talar head (correct answer)
An intersection of these two tendons form "The Knot of Henry" - ANSFHL and FDL
A patient is unable or has too much difficulty performing a single-support heel raise; his hindfoot
remains flexible. These findings on physical exam correspond to this Stage of Flatfoot deformit:
- ANS2
In a spring ligament InternalBrace augmentation, what size SwiveLock anchor is best for the
sustentaculum Tali? - ANS3.5 mm
What is the major difference between Arthrex PARS and competitor PARS systems? -
ANSLocking FiberWire stitch configuration (stronger than simple transverse suture passage)
Where does the sural nerve cross the lateral border of the achilles tendon? (average) - ANS57
mm proximal to the insertion; or 9.8 cm from the calcaneal tuberosity according to some
cadaveric studies
Where does a midsubstance achilles rupture typically occur? - ANSdiminished vascular
watershed region (2-6 cm proximal to the insertion)
When inserting the PARS jig, what position should the foot be in? - ANSresting plantarflexion
and neutral rotation
How proximal is the first PARS needle insertion relative to the superior calcaneus? (average) -
ANS110 mm (97-120mm)
How proximal is the 5th PARS needle insertion relative to the superior calcaneus? (average) -
ANS93.6 mm (82-105mm)
What type of rotation (internal vs external) may reduce the risk of penetrating the sural nerve
with PARS needle passage? - ANSExternal (internal increases the chances)
What procedures are commonly done in conjunction with Spring Ligament IB? (in descending
order) - ANS1) FDL Transfer to navicular (P -> D)
1) Resection of diseased Posterior Tibial Tendon
2) Medializing calc osteotomy
3) Gastroc recession
4) Cotton osteotomy (opening wedge med. cuneiform)
5) Lapidus (first metatarsocuneiform arthrodesis)
6) Lateral column lengthening calc osteotomy
When doing the blind-tunnel tenodesis technique, when should the surgeon measure the
diameter of the tendon? - ANSafter the tendon has been whipstitched**
Which arthrex bone void solution provides cell, signal and scaffold? - ANSArthrocell bone
allograft
Arthrocell allograft contains a cellular component referred to as MIAMI cells. What does the
acronym MIAMI stand for? - ANSMarrow Isolated Adult multi-lineage inducible cells
, Which of our bone void fillers are composed of 100% DBM? - ANSAllosync Cortical Fibers
Allosync Expand cortical fibers
Allosync Pure
Allosync Cancellous sponges (strips, cubes, 12x3 button)
What are the three zones of the scaphoid? - ANSDistal pole, waist, proximal pole
Surgical treatment is indicated for which of the following findings in scaphoid fractures?
A. Displacement greater than 1mm
B. Angulation greater than 15 degrees
C. Comminuted fractures
D. All the above - ANSD. All the above
Which fibers of the scapholunate interosseous ligament are the strongest and most important to
wrist function? - ANSDorsal
A cotton osteotomy is an osteotomy of which bone of the foot? - ANSMedial Cuneiform
What is the order of screw placement in the anterior ankle fusion plate? - ANS1. Talus
locking/non-locking screw fixation
2. Tibia oblong compression hole non-locking screw fixation
3. Anatomic compression hole screw fixation,
4. Final fixation with tibia locking/non locking screws
At what stage of flatfoot deformity is an ankle fusion often indicated? - ANSStage 4
All of the following are components of flatfoot deformity, EXCEPT:
A. Loss of longitudinal arch
B. lateral translation of the navicular on the talus
C. Valgus tilt of the calcaneous
D. Elevation of the talar head
E. Shortening of the lateral column - ANSD. Elevation of the talar head (correct answer)
An intersection of these two tendons form "The Knot of Henry" - ANSFHL and FDL
A patient is unable or has too much difficulty performing a single-support heel raise; his hindfoot
remains flexible. These findings on physical exam correspond to this Stage of Flatfoot deformit:
- ANS2
In a spring ligament InternalBrace augmentation, what size SwiveLock anchor is best for the
sustentaculum Tali? - ANS3.5 mm
