Herniated nucleus pulposus (HNP), also referred to as a herniated disc, is a common spine pathology that occurs approximately 95% of the time at the L4-L5 or L5-S1 level (Fisher et al., 2004; Asch et ...
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What’s causing your stiff back and how can you relieve it?
Medically reviewed by Theresa Marko, PT, DPT, MSKey TakeawaysA stiff back can be caused by everyday factors like muscle ...
Lumbar spinal stenosis (LSS) is any narrowing in the lumbar spinal canal or lateral recess. It can be developmental, congenital, or acquired. This article discusses acquired degenerative lumbar spinal ...
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