Vertebrae-Disc-Vertebrae Model: Dynamic Disc Designs

[Slackwater]

This is a realistic model to be used in a surgeon's office with patients. Dr. Fryer said the model can demonstrate over 20 pathological conditions. Please be patient the site can be bandwidth limited during week days and daylight hours. Look here: Link to Animation w/Audio (animation requires flash from adobe).

Dr. Fryer's model shows posterior, posterolateral, and lateral encroachment syndromes. The model is intended to be used in a surgeon's or doctors office to show bulges & mechanical mechanisms to save time explaining underlying physical issues resulting in symptoms to patients and probably better explain CT, MRI's to patients.

Research behind the disc is broad, more than 250 papers. The intervertebral disc's hydraulic nature is shown. The approach correlates (~pretty well, I think) with a recent paper on poroelastic and viscoelastic behavior in response to six degree of freedom dynamic mechanical loads.

Dr. Fryer, Canada, gets a gold star from this side. I wish I had seen this after my first MRI. It's more like the real thing than I have seen in any surgeon's office.

More details
Demonstrates:
1. distinct palpable difference between annular fibres and nucleus
2. bulging/nuclear migration with compression and nuclear centralization with decompression
3. nerve root impingement against disc nucleus in a dynamic way through cumulative loads
4. nerve tension signs and related orthopedic tests
5. central cord compression in flexion/compression loads
6. dynamic flexion, extension, lateral flexion and any combination there-of.
7. articular cartilage of facets as well as endplate (with pores).
8. see-through L4 to see a top-down view of annular fibres & nucleus, demostarting nuclear migration & annular derangement in a better understanding of load distribution
9. facet approximation and source of related pain and development of OA
10. disc height loss and relevance to AROM of vertebral complex
11. decompression and compression
12. diurnal disc variation and how it may relate to patients Sx morning and evening
13. mechanobiological creep of disc
14. the cross 30 degree angles of the palpable exterior annular fibres
15. specifically what not to do with loads to speed healing for each case
16. sticking like nucleus resembling the natural thing

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I hope Dr. Fryer sells 10's of thousands of these.

[Cirobi]

Wow, thank you for sharing that! I wish I could get one just so I could more easily describe to friends and family what I'm dealing with because all too often they just have no way of knowing what the heck I'm talking about.

[Slackwater]

Originally posted by Cirobi:
Wow, thank you for sharing that! I wish I could get one just so I could more easily describe to friends and family what I'm dealing with because all too often they just have no way of knowing what the heck I'm talking about.

You are welcome. I am not sure what I'm dealing with most days; the model animation helps me get a better handle on the affected structures. The disc bulges against the nerves and the patient gets symptoms. Those patients with symptoms are us, unfortunately.

Slackwater