1
Q
What is nucleus pulposus?
A
A three-dimensional lattice of collagen fibres within a hydrophilic proteoglycan gel.
Changes in the gel with increasing age lead to dehydration and changes in mechanical behaviour of the disc.
2
Q
What is annulus fibrosis?
A
Approx. 20 annular bands surrounding the nucleus, with fibres in each band, arranged in alternate directions.
This gives great strength and provides restraint to movement.
3
Q
What is the cartilage end plate?
A
The anatomical limit of the disc to which the annulus attaches.
It allows the diffusion of fluid into the disc.
4
Q
A
