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Providence > DTRAX > Flashcards

DTRAX Flashcards

1
Q

What are 3 advantages of DTRAX

A

Does not remove healthy tissue or stabilizing structures
Burns no bridges to future treatment
Favorable cosmetic outcome

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2
Q

DTRAX: INDIRECT DECOMPRESSION

How much facet distraction does DTRAX get?

What is the increase in foraminal height?

A

3mm

20% +

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3
Q

When did DTRAX obtain it’s 510K clearance?

When was the first US case with DTRAX?

A

May 2013

November 2013

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4
Q

When did DTRAX obtain it’s CE Mark?

A

July 2011

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5
Q

What is the DTRAX Cervical Cage indicated for?

A

The DTRAX Cervical Cage is indicated for use in skeletally mature patients with degenerative disc disease (DDD) of the cervical spine (C3-C7) with accompanying radicular symptoms at one disc level.

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6
Q

DTRAX Graft

What is the structural strength of the DTRAX Graft?

A

Bench top testing supports the structural strength of DTRAX Graft.

25+ lbs. of pullout strength*
160+ lbs. of compressive strength*

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7
Q

What are the dimensions of the DTRAX Graft?

A

10mm x 5mm x 3.7mm

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8
Q

What is the outer diameter of the DTRAX instrumentation?

A

1 cm

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9
Q

Where should the initial SKIN INCISION be made?

A

2 levels below the targeted level

* Due to the acute angles of the facet joints.

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10
Q

When can MIS posterior stabilization like DTRAX be beneficial?

A
  • Spondylitic radiculapathy and Foraminal Stenosis
  • Symptomatic non-union from ACDF
  • Supplemental Stabilization and posterior fusion with ACDF (particularly with multi-level ACDF)
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11
Q

What journal was the peer-reviewed article on DTRAX study published in?

A

The Journal of Neurosurgery

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12
Q

What was the title of the clinical article in the Journal of Neurosurgery?

A

Percutaneous posterior cervical fusion with the DTRAX facet system for single-level cervical radiculapathy: results in 60 patients

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13
Q

In the study, what were the findings in changes to lordosis?

A

Minimal Changes in Lordosis

Treated Level Lordosis = -1.6
Overall Level Lordosis = -.04

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14
Q

What were the fusion rates in the study?

A

93% of patients fused verified by CT

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15
Q

In the study, what complications were there?

A

Two intraoperative facet fractures
- Access tool redesigned to address

Two inability to access facet
- Unilateral procedure performed

Zero nerver root, vertebral artery, or spinal cord injuries

No implant migration

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16
Q

According to a study in the Journal of Neurosurgery, what were the fusion rates in 1, 2, and 3 level ACDF’s?

A

1 Level - 92%
2 Level - 80%
3 Level - 65%

17
Q

What are the Posterior Cervical Fusion codes?

A

22600 - Arthodesis, posterior or posterolateral technique, single level; cervical below C2 segment - $1319

+22614 - Additional vertebral segment - $403

+22840 - Posterior non-segmental instrumentation (facet screw) - $785

+22842 - Posterior segmental instrumentation (3 to 6 segments) - $785

+20930 / +20931 - allograft, morselized, or placement of osteopromotive material - $115

18
Q

What are the advantages of DTRAX over an ACDF?

A

Does not remove any healthy tissue or stabilizing structures.

1 cm incision

Burns no bridges if ACDF is needed later

30 minute procedure for 1 level
45 minute procedure for 2 level

No dysphagia

19
Q

Why doesn’t DTRAX cause kyphosis?

A

Because the implant is next to the instantaneous axis of rotation.

20
Q

Is this procedure safe?

A

Yes. The pedicle and the transverse process protect the anatomy.

DTRAX has been used in over 3,000 cases with no injuries to the vertebral artery, nerve root or spinal cord.

21
Q

What are DTRAX’s one and two year fusion rates?

A

93.3% - 1 year

97% - 2 year

22
Q

What are the contraindications for DTRAX?

A

Myelopathy
Instability
Central stenosis
Disc Herniation

23
Q

Name each instrument.

A 
Access tool
Decortication device
Tuning Fork
Guide Tube
Chisel Rasp
Implant Delivery Tool
Bone Graft Delivery Tool
24
Q

What is the opening line of your DTRAX pitch?

A

I have a titanium cervical cage
Delivered minimally invasively
Through a posterior approach
That indirectly decompresses and fuses

It can be used for:

Non-unions / revisions - posterior approach
Adjacent level disease - 25% of all ACDF’s end up with ALD
Multi-level ACDF’s - posterior stabilization
Foraminal Stenosis - Why remove healthy disc

When do you see these in your practice?

Providence (7 decks)

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