[Efficacy of bilateral sagittal cross percutaneous kyphoplasty for preventing recurrent fracture of the cemented vertebrae].

OBJECTIVE:To explore the efficacy of bilateral sagittal cross percutaneous kyphoplasty(PKP) for preventing recurrent fracture of the cemented vertebrae. METHODS:From January 2017 to June 2017, 85 patients with single-segment osteoporotic vertebral compression fractures(OVCFs) were treated by bilateral sagittal cross PKP(cross group). There were 35 males and 50 females with an average age of (70.1±8.3) years old in cross group. Another 85 patients with single-segment OVCFs were treated by traditional PKP (traditional group). There were 37 males and 48 females with an average age of (73.3±9.5) years old in traditional group. The cement distribution condition, recurrent fracture of the cemented vertebrae, the anterior vertebral body height and sagittal Cobb angle, visual analogue scale(VAS) were observed in two groups. RESULTS:All patients underwent operation successfully. The follow-up time were (11.8±4.5) months in cross group and (12.1±3.7) months in traditional group. In cross group, all patients' bone cement touched the upper and lower endplates of the vertebral body while 67 cases (78.8%) in traditional group did with significant difference between two groups (P<0.05). No patient in cross group suffered recurrent fracture of the cemented vertebrae while 10 cases (11.8%) in traditional group did with significant difference between two groups(P<0.05). The anterior vertebral body height, sagittal Cobb angle and VAS in both groups were obvious improved at 2 days after operation (P<0.05) and there were no significant difference between two groups at 2 days after operation and the final follow-up(P>0.05). CONCLUSIONS:Bilateral sagittal cross PKP was a simple, safe and effective technique which can make bone cement distribute in the fractured vertebral body and contact the upper and lower endplates of the vertebral body, thus preventing the recurrent fracture of the cemented vertebrae.