Fig.Ā 1From: Safety and feasibility of ultra-long construct navigated minimally invasive spine surgery with adjuvant radiotherapy in extensive spinal metastasis : a comparative analysisThe navigated percutaneous pedicular screws fixations were usually required two times of spinal landmark registration due to the ultra-long of the operated segment. A The application of systems of thoracic region, B The application of systems of the lumbosacral regionBack to article page