DTRAX Flashcards
What are 3 advantages of DTRAX
Does not remove healthy tissue or stabilizing structures
Burns no bridges to future treatment
Favorable cosmetic outcome
DTRAX: INDIRECT DECOMPRESSION
How much facet distraction does DTRAX get?
What is the increase in foraminal height?
3mm
20% +
When did DTRAX obtain it’s 510K clearance?
When was the first US case with DTRAX?
May 2013
November 2013
When did DTRAX obtain it’s CE Mark?
July 2011
What is the DTRAX Cervical Cage indicated for?
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.
DTRAX Graft
What is the structural strength of the DTRAX Graft?
Bench top testing supports the structural strength of DTRAX Graft.
25+ lbs. of pullout strength*
160+ lbs. of compressive strength*
What are the dimensions of the DTRAX Graft?
10mm x 5mm x 3.7mm
What is the outer diameter of the DTRAX instrumentation?
1 cm
Where should the initial SKIN INCISION be made?
2 levels below the targeted level
* Due to the acute angles of the facet joints.
When can MIS posterior stabilization like DTRAX be beneficial?
- Spondylitic radiculapathy and Foraminal Stenosis
- Symptomatic non-union from ACDF
- Supplemental Stabilization and posterior fusion with ACDF (particularly with multi-level ACDF)
What journal was the peer-reviewed article on DTRAX study published in?
The Journal of Neurosurgery
What was the title of the clinical article in the Journal of Neurosurgery?
Percutaneous posterior cervical fusion with the DTRAX facet system for single-level cervical radiculapathy: results in 60 patients
In the study, what were the findings in changes to lordosis?
Minimal Changes in Lordosis
Treated Level Lordosis = -1.6
Overall Level Lordosis = -.04
What were the fusion rates in the study?
93% of patients fused verified by CT
In the study, what complications were there?
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
According to a study in the Journal of Neurosurgery, what were the fusion rates in 1, 2, and 3 level ACDF’s?
1 Level - 92%
2 Level - 80%
3 Level - 65%
What are the Posterior Cervical Fusion codes?
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
What are the advantages of DTRAX over an ACDF?
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
Why doesn’t DTRAX cause kyphosis?
Because the implant is next to the instantaneous axis of rotation.
Is this procedure safe?
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.
What are DTRAX’s one and two year fusion rates?
93.3% - 1 year
97% - 2 year
What are the contraindications for DTRAX?
Myelopathy
Instability
Central stenosis
Disc Herniation
Name each instrument.
Access tool Decortication device Tuning Fork Guide Tube Chisel Rasp Implant Delivery Tool Bone Graft Delivery Tool
What is the opening line of your DTRAX pitch?
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?
