In conclusion, intraspinal lumbar synovial cysts are uncommon causes of sciatic pain. Intraspinal synovial cysts are associated with degenerative arthritis of the lumbar spine. The radiographic findings on myelography are non-specific, but CT and MRI are helpful in establishing the diagnosis and in differentiating synovial cysts from other extradural lesions.
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Deborah M. Budris (1991) studied this question.
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