X-ray (also known as plain films): test that uses invisible electromagnetic energy beams (X-rays) to produce images of bones.This is a condition in which the cauda equina–the sac of nerves and nerve roots at the base of the spinal cord–is compressed. Rarely, synovial cysts can cause cauda equina syndrome. This is referred to as neurogenic claudication.įurthermore, synovial cysts may also cause sciatica , leg pain in one or both legs that typically radiates down the back of the leg and to the foot. If the spinal nerves are pinched in the lumbar (lower) spine, patients may experience pain, cramping, numbness, weakness, or heaviness in both legs that is often worse while standing and walking. As a result, patients may experience numbness, tingling or weakness in one or both legs. In spinal stenosis, the spinal canal becomes too narrow to allow the spinal cord and surrounding spinal nerves to move freely. If the synovial cysts are large enough, they may cause spinal stenosis, or narrowing of the spinal canal. The spinal canal naturally expands a bit when in a seated or flexed forward posture often relieving the excess pressure from spinal stenosis. This is because in a fully upright posture, the spinal canal naturally narrows, placing additional pressure on the spinal cord and nerve roots. However, some patients will experience back and leg pain that is better when sitting, and worse when standing and walking. Some patients may not experience any symptoms. Symptoms depend on the size and location of the cyst.
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