Larsen J M, Rimoldi R L, Capen D A, Nelson R W, Nagelberg S, Thomas J C
Rancho Los Amigos Medical Center, Downey, California, USA.
J Spinal Disord. 1996 Apr;9(2):117-20.
Twenty-five consecutive patients who had previously undergone lumbar fusion using stainless steel pedicle screw instrumentation and complained of persistent, severe pain were identified for prospective study. All patients had been scheduled for hardware removal and fusion inspection. Studies to rule out pseudarthrosis included plain radiography, flexion and extension radiography, computed tomography, and bone scintigraphy. Each preoperative radiographic study was then evaluated in a blinded fashion by a single independent radiologist and was determined to show fusion or pseudarthrosis. Each patient then underwent surgery, at which time the pedicle screw instrumentation was removed and the fusion was inspected. Using surgical inspection as absolute evidence of fusion or pseudarthrosis, statistical analysis was undertaken to evaluate the predictive value of the radiographic studies singly and in combination. No statistically significant correlation was found.
连续选取25例曾接受不锈钢椎弓根螺钉器械腰椎融合术且主诉持续严重疼痛的患者进行前瞻性研究。所有患者均已安排行内固定取出及融合情况检查。排除假关节形成的检查包括X线平片、屈伸位X线片、计算机断层扫描（CT）及骨闪烁显像。然后由一名独立放射科医生以盲法对每项术前影像学检查进行评估，确定其显示融合或假关节形成情况。随后每位患者接受手术，术中取出椎弓根螺钉器械并检查融合情况。以手术检查作为融合或假关节形成的绝对证据，进行统计分析以评估单项及联合影像学检查的预测价值。未发现有统计学意义的相关性。
