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Mechanical Low Back Pain

Anatomy and Functional Concepts

Anatomy: Structures of a functional lumbar segment possibly involved in mechanical LBP are identified below. While the nucleus pulposus and the inner layers of the annulus fibrosus are not innervated they play a role in pain production in that their displacement may deform other pain sensitive tissues or interfere with the normal dynamic relationship of the adjacent articular surfaces.

Anterior		Posterior
The above image is a mid-sagittal view of what you might see if the spinal column were cut in half along the midline
Posterior
Anterior Superior view of a lumbar segment
Anterior		Posterior
A lumbar side view