ABSTRACT
Objective To investigate the relationship between the cystic fluid characteristics of symptomatic sacral canal cyst and the interventional therapeutic prognosis.Methods A total of 114 patients with symptomatic sacral canal cyst were enrolled in this study.Clinically,all patients complained of discomfort at lumbosacral area.Among the 114 patients,86 were primary sacral canal cyst and 28 were recurrent sacral canal cyst.Under DSA guidance,percutaneous puncturing of the cyst was performed,2-5 ml cerebrospinal fluid (CSF) was aspirated and sent for laboratory tests.Then a small amount of nonionic contrast agent was injected into the cyst to determine whether the cyst was communicated with the subarachnoid space or not.Finally,double-needle method was used to aspirate the cyst fluid.Results Radiography showed that communication between the cyst and subarachnoid space was detected in 66 patients (group A),while no communication between the cyst and subarachnoid space was observed in 48 patients (group B).In patients with primary symptomatic sacral canal cyst,the differences in the sugar and chloride levels of CSF between group A and group B were statistically significant.In patients with recurrent symptomatic sacral canal cyst,the differences in the sugar,protein and chloride levels of CSF between group A and group B were also statistically significant.Statistically significant correlation existed between the single or multiple CSF changes and the interventional therapeutic prognosis.Conclusion Sacral canal cysts can be classified into two types:cyst-subarachnoid space communicating type and cyst-subarachnoid space non-communicating type.The characteristics of CSF in patients with primary symptomatic sacral canal cyst are different from those in patients with recurrent symptomatic sacral canal cyst.Multiple CSF changes,the increased sugar level and decreased chloride level in CSF are well correlated with the interventional therapeutic prognosis.
ABSTRACT
Along with the aging of population in China,more and more people suffer from osteoporosis.As a consequence,osteoporotic vertebral compression fracture has become one of the major clinical issues.More and more patients like to take percutaneous vertebroplasty (PVP) as the preferred treatment,thus,the number of patients who develop recurrent vertebral fracture after PVP is also increased.In recent years,more and more attention has been paid to the recurrent fractures after PVP for vertebral compression fractures by clinicians.In order to reduce the incidence of recurrent vertebral fracture after PVP,it is necessary to make the further and deep studies on the risk factors that cause recurrent vertebral fractures.This paper aims to make a comprehensive review about the risk factors that may cause recurrent vertebral fractures after PVP for osteoporotic vertebral compression fracture.