S2 pedicle screw placement for lumbosacral reconstruction

English Keywords:Sacrum 2  Pedicle  Stability  Clinical efficacy

English Abstract:

  【Abstract】 Objective：To investigate the S2 pedicle screw placement for lumbosacral reconstruction.Method：13 patients suffering lumbosacral disorders underwent S2 pedicle screw placement．There were 10 males and 3 females with an average age of 48.3 years（range，40 to 56 years）．The course ranged from 1 day to 8 months.2 cases were complicated with S1 lumbarization and spondylolisthesis，of these，1 case had neurological deficit of L5.3 cases were complicated with L4-5 tuberculosis，all showed normal neurofunction．Lumbosacral fractures and/or with the lateral displacement were noted in 8 cases.Preoperative ASIA grade showed 3 level B，2 level C and 3 level D.All patients underwent S2 pedicle screw placement combined with bone graft fusion.The clinical outcome of all patients was reviewed retrospectively.Result：All patients were followed-up for at least 1 year.Patients with S1 lumbarization and spondylolisthesis had good reduction and had pain and paresthesis relieved 2 weeks later.Patients with lumbar tuberculosis had pain relieved after operation and body temperature recovered to normal.Patients with lumbosacral fracture achieved good reduction and had ASIA score increase one level 1 year later.No S2 pedicle screw malposition and instrument failure were noted and all cases had bony fusion finally.Conclusion：S2 pedicle screw placement for lumbosacral reconstruction is safe and reliable.