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Case Report
Korean J Spine 2004;1(2): 293-299.
9
Minimally Invasive Posterior Lumbar Spinal Fusion with METRx System - Technical Note -
Hyun-Jong Hong, M.D. and Young-Baeg Kim, M.D.
Department of Neurosurgery, Chungang University College of Medicine, Seoul, Korea
METRx System을 이용한 최소 침습적 후방척추고정술 - 수술 수기 -
홍현종,김영백
중앙대학교 의과대학 신경외과학교실
Abstract
Objective
Standard posterior spinal fusion with instrumentation requires a moderate amount of paraspinal musculoligamentous dissection. This dissection causes muscle denervation and atrophy that increases risk for failed back syndrome. Therefore, the authors performed a minimally invasive posterior lumbar spinal fusion with the METRx system to minimize the iatrogenic tissue injury.
Methods
Three patients underwent posterior lumbar pedicle screw fixation and transforaminal lumbar interbody fusion(TLIF) with the METRx system. The muscle-splitting approach using a series of tubular dilators with consecutively increasing diameter was performed under the C-arm fluoroscopic guidance. TLIF and pedicle screw-rod fixation was done within a 20mm-final working channel retractor and a X-tube.
Results
These techniques can result in significant reduction of intraoperative bleeding and postoperative back pain and allows patients to resume their normal activities sooner than conventional posterior approach.
Conclusion
In case of instability of one-motion segment, pedicle screw fixation and TLIF with METRx system can reduce unnecesary trauma to the lumbar musculoligamentous structures while still accomplishing sufficient decompression and effective stabilization.
Keywords: Minimally invasiveㆍLumbarㆍPosterior instrumentationㆍPedicle screw
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