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Title: Trauma as a precipitant of haemorrhage in synovial cysts. Author: Wang YY, McKelvie P, Trost N, Murphy MA. Journal: J Clin Neurosci; 2004 May; 11(4):436-9. PubMed ID: 15080968. Abstract: Synovial cysts have been well reported as a cause of sciatica, with a sudden acute exacerbation being attributed to haemorrhage and subsequent enlargement of the cyst. Cyst formation is attributed to facet joint degeneration associated with a defect or rupture of the joint capsule. The mechanisms of haemorrhage have not been well described previously. Two cases of haemorrhagic synovial cysts causing acute exacerbation of sciatica are described. Both cases were directly attributable to manipulation of degenerate spines. The MRI and histopathological findings are discussed and we propose a mechanism whereby excessive stress on a degenerate revascularized synovium leads to haemorrhage within synovial cysts.[Abstract] [Full Text] [Related] [New Search]