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About 90% of sciatica is due to a spinal disc herniation pressing on one of the lumbar or sacral nerve roots. [4] Spondylolisthesis, spinal stenosis, piriformis syndrome, pelvic tumors, and pregnancy are other possible causes of sciatica. [3] The straight-leg-raising test is often helpful in diagnosis. [3]
In 1933, the proposal of disc herniation as a cause of sciatica shifted attention to the spine. [76] Although the concept of piriformis syndrome was conceptualized as early as 1928, [ 77 ] the incompletely understood pathology and lack of clear diagnostic criteria made this syndrome highly controversial. [ 19 ]
The second frequent cause of sciatica is lumbar spinal stenosis. This is a degenerative condition that leads to a "narrowing of the openings where the spinal nerves are," Delaney says.
Pain caused by compression or irritation of the sciatic nerve by a problem in the lower back is called sciatica. Common causes of sciatica include the following lower back and hip conditions: spinal disc herniation, degenerative disc disease, lumbar spinal stenosis, spondylolisthesis, and piriformis syndrome. [5]
What causes sciatica and how can you ease the pain of this common condition? Here's what experts suggest. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways ...
Sciatica is an "umbrella term" associated with pain that runs the route of the sciatic nerve, Warner says. The sciatic nerve is responsible for both muscle movement and sensory sensations of the legs.