Effect of posterolateral arthrodesis or posteriorly circumferential spinal fusion combined with posterior instrumentation in improving the low back pain and disorders of functional activity in patients with isthmic spondylolisthesis是什么意思_Effect of posterolateral arthrodesis or posteriorly circumferential spinal fusion combined with posterior instrumentation in improving the low back pain and disorders of functional activity in patients with isthmic spondylolisthesis在线翻译_英语_读音_用法_例句