The “action” of a ligament is similar to that of an antagonist muscle. If either is tight/taut, it restricts motion to the opposite side.
Back Extension McKenzie Exercises Effect on Disc Fluid
The authors concluded that little evidence was found supporting the hypothesis that extension McKenzie exercises affect disc fluid content.
Pathologic Disc Conditions of the Lumbar Spine and Sciatica
A pathologic disc can compress the sciatic nerve resulting in sciatica. Although any pathologic disc is potentially serious.
Joints of the Lumbar Spine (disc & facet) and Pelvis
In the lumbar spine, three joints are located between each two adjacent vertebrae: one disc joint and two paired (left and right) facet joints.
Bones of the Lumbar Spine and Pelvis
The low back is defined by the lumbar spine, composed of 5 vertebrae, named L1-L5. The pelvis is defined by the bones of the pelvic girdle.
Pathologic Disc Conditions of the Neck
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.






