BACKGROUND Vertebral compression fracture is one of the most common complications of osteoporosis. In this study an unilateral curved vertebroplasty device was developed, and the safety, effectiveness, and surgical parameters of curved vertebroplasty (CVP) in the treatment of painful osteoporotic vertebral compression fractures was investigated and compared with traditional bipedicular vertebroplasty (BVP). METHODS We investigated 104 vertebral augmentation procedures performed over 36 months. CVP and BVP procedures were compared for baseline clinical variables, pain relief (Visual Analog Scale, VAS), disability improvement (Oswestry Disability Index, ODI), operation time, number of fluoroscopic images, volume of cement per level, and cement leakage rate for each level treated. Complications and refracture incidence were also recorded in the two groups. RESULTS The VAS and ODI in both group had no significant difference preoperative (P > 0.05), and a significant postoperative improvement in the VAS scores and ODI was found in both group (P < 0.001). However, the CVP group had significantly lower operation time, number of fluoroscopic images, and cement leakage rate per level than the BVP group (P < 0.05); however, the volumes of cement per level were similar in the two groups (P > 0.05). Neither group had any serious complications. Five and two patients in the BVP group developed refractures at non-adjacent and adjacent levels, respectively, with one patient developing refractures twice; however, none of the patients in the CVP group developed refractures at any level. CONCLUSIONS Our findings revealed that both CVP and BVP were safe and effective treatments for osteoporotic vertebral compression fractures, and CVP entails a shorter operation time, less exposure to fluoroscopy, and lower rate of cement leakage.

中文翻译：

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单侧弯曲与双椎椎体成形术治疗骨质疏松性椎体压缩性骨折。

背景技术椎骨压缩性骨折是骨质疏松症最常见的并发症之一。在这项研究中，开发了一种单侧弯曲椎体成形术装置，并研究了弯曲椎体成形术（CVP）在治疗疼痛性骨质疏松性椎体压缩性骨折中的安全性，有效性和手术参数，并将其与传统的双椎椎体成形术（BVP）进行了比较。方法我们调查了在36个月内进行的104例椎体增大手术。比较了CVP和BVP程序的基线临床变量，疼痛缓解（视觉模拟量表，VAS），残疾改善（Oswestry残疾指数，ODI），手术时间，透视图像的数量，每级水泥的体积以及水泥的渗漏率每个级别的治疗。两组还记录了并发症和骨折的发生率。结果两组术前VAS和ODI无明显差异（P> 0.05），两组术后VAS评分和ODI均有明显改善（P <0.001）。然而，CVP组的手术时间，透视图像数量和每级水泥渗漏率均显着低于BVP组（P <0.05）。但是，两组的每级水泥体积相似（P> 0.05）。两组均无严重并发症。BVP组中有5例和2例分别在不相邻和相邻水平发生了屈光，其中1例两次出现了屈光。但是，CVP组的患者均未出现任何水平的屈曲。