The authors concluded that little evidence was found supporting the hypothesis that extension McKenzie exercises affect disc fluid content.
In the lumbar spine, three joints are located between each two adjacent vertebrae: one disc joint and two paired (left and right) facet joints.
The danger with a disc bulge or herniation is that the disc can compress the spinal nerve within the intervertebral foramen, causing a pinched nerve.
The “action” of a ligament is similar to that of an antagonist muscle. If either is tight/taut, it restricts motion in the opposite direction.
The disc joint is a cartilaginous joint that is composed of outer fibers called the annulus fibrosus that encircle the inner nucleus pulposus.