Merging The System Of RF Pedicle Screw Instrumentation For Reduction And Fixation With Intervertebral Bone-Graft To Treat Lumbar Spondylolisthesis

Objective: Observing and researching the clinical effect of treatinglumbar spondylolisthesis by the system RF pedicle screw instrumentationfor reduction, fixation, decompression and intervertebral bone-graft.Methods: There are 23 cases of treating lumbar spondylolisthesis byadopting RF pedicle screw instrumentation for reduction fixation,decompression, and intervertebral bone-gaff.3 cases are for male and 15cases for female, the average age is 52.3;Adopting Newman sub-type, thereare 13 cases of lumbar degenerative spondylolisthesis, 9 cases of lumbaristhmic spondylolisthesis and 1 case of lumbar traumaticspondylolisthesis. Shedding section: There are 10 cases of L4 shedding and13 cases of L5 shedding. According to Meyerding classification, there are12 cases ofâ… degree shedding, 10 cases ofâ…¡degree shedding and 13 casesofâ…¢degree shedding. The operative indications of the worsening painYaotuiling, Conservative treatment or spinal stenosis were associatedwith signs and symptoms of nerve root.Result: 6-18 months of follow-up, the X-ray shows the satisfaction ofreduction, solid internal fixation. There isn't any breaking and loosescrew and lost of reduction, without other complications of spinal nerveroot injury. Intervertebral bone-graft fused well, The rate of fusion is91.3%.According to JOA Marking System, the excellent case is 18, the goodis 4 and passable is 1. The rate of fine is 91.3%.Conclusions: decompression after the Fusion is the key. Full access to thenerve root and spinal decompression, The maximum reduction, reasonable and reliable, internal fixation is the foundation. RF pedicle screwinstrumentation for Reduction and fixation full access to the nerve rootand spinal decompression and interbody fusion can be effectively restoredthe intervertebral space, neuroforamen height, Improve fuse and reduce therate of screw breakage, the effective reduction to reduce the lossreduction, reducing the intervertebral space and neuroforamen height loss,can improve symptoms and the segment of maintaining stability.