Details include:
true geometry
1-part elastomeric discs (c2-c3-4-5-6) white c2-3 red c3-6 (hyperelastic c3-4- to demonstrate hypermobility)
2-part elastomeric disc (c6-7) red nucleus and red annulus to demonstrate nuclear extrusion and canal encroachment
red painted subchondral facets
blue painted hyaline facets
clear elastic material on surface of facets (superior C1 and inferior C7) for a palpable experience of hyaline surface
ligamentum flavum throughout
cruciform ligament