DEX IOT DAY 3 TEST NEWEST 2024 ACTUAL
EXAM 150+ QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
1. what comes in the mini tightrope implant system: tensioning handles
2.7 mm knotless mini tightrope
implant 2.7mm cannulated drill
nutunol passing wire x2
1.24 mm kwire x2
#2 coreless suture
6 suture construct
5.5 round button
2.6 oblong
2. is there a fear of overtensioning mini tightrope for lisfranc: no- there is an
instability but not deformity
3. is there a need to do joint prep for lisfranc injury: no
4. what dorsal structure to be aware of on top of cueniform: neurovascular
bundle located under the extensor hallucis brevis dorsal pedis (pick and side
and go down to bone)
5. what to be aware of for your medial incision: extensor tendons
tibialis anterior
6. Lisfrance tightrope incisions: 2 incisions
1-dorsal between 3st and 2nd met bases
2-medial along medial cueniform and inferior to tibial anterior tendon
insertion
7. what is the drill diameter and depth for lisfranc tightrope Ib on medial
cueniform: 3.5 drill diameter 15mm depth
8. process of wire for lisfranc TR: 1.24 tightrope starting at dorsal lateral edge of
2nd base aim plantar to medial cuneirform through the interosseous lig
, 9. for a lisfranc ligament where should the gw exit: inferior to the tibialis
anterior tendon
10. process of drilling for Lisfranc TR: overdrill the wire with 2.7 drill starting at
the 2nd met and exit medially through medial cuneiform
11. what do you do after you drill for lisranc TR: pass wire retrograde insert TR
needle and pass medial to lateral while keeping tension to ensure button
remains flat
remove lateral slack and guide round button down to bone on medial side
tension with handles
cut
12. Lisfranc TR advantages: No secondary surgery for hardware removal prior to
weightbearing and/or problems with broken screws No loss in reduction after
screw removal Nonrigid anatomical reduction may function more like the
natural ligament than a rigid screw Low profile, knotless implant fixation with
patented tensionable technology
40% increase in mechanical strength1,2
Novel 6-strand construct
13. what size is the mini tightrope: 2.6 oblong button
14. lisfranc x ray: weight bearing
15. midfoot has what 3 columns: medial (1st met and medial cueniform), lateral
(cuboid and 4th and 5th met), and middle (2and 3rd met and middle and
lateral cueniform)
16. static x ray views: anteroposterior oblique lateral
17. midfoot medial column: distal phalax to medial cuneiform
18. midfoot lateral column: flexible, allows us to balance on uneven surgface 19.
biomechanically how does lisfranc happen: direct or indirect high or low
20. direct lisfranc force is what: forcce applied to mid foot being run
over
standing force is going from bottom up and somethign else is coming from top to
bottom pushing down or vise versa
21. keystone configuration: middle cuneiform is shorter and the
second met comes down further to give midfoot stability
22. lisfr:
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