Purpose: To evaluate the safety and efficacy of PKP under O-arm navigation system guidance for treating middle thoracic OVCF (T6~T9).
Methods: A retrospective study was conducted for 44 consecutive T6~T9 OVCF patients who received PKP assisted with O-arm navigation (n = 20) or fluoroscopy (n = 24) from January 2016 to December 2017. Demographic data, radiographic parameters, and clinical outcomes were collected and analyzed at pre-operative, post-operative, and final follow-up period. Complications including tissue lesion, needle malposition, and leakage of bone cement were also recorded amid operation.
Results: A total of 44 patients (4 males and 40 females, with mean age of 71.1 ± 8.7) were enrolled in this study, and the mean follow-up time was 14.4 months. In surgical details, navigation system could obtain more satisfactory volume of injected cement and less loss of blood, as well did not increase surgical time compared with fluoroscopy. Both radiological and clinical outcomes improved significantly at post-operative and final follow-up, while did not differed between two groups. For adverse events, the incidence of cement leakage was similar between two groups. However, O-arm navigation can achieve lower rate of complications than fluoroscopy.
Conclusion: Our preliminary study demonstrated that PKP assisted with O-arm navigation is a safe and effective procedure that applied for middle thoracic OVCF (T6~T9), which can achieve favourable radiological and clinical outcomes, and low rate of complications.
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