腰仙椎部における後方進入腰椎椎体間固定術(PLIF)の治療成績とその有用性

抄録

We reviewed ninety patients with degenerative disorders who underwent a L5/S1 posterior lumber interbody fusion (PLIF) procedure by titanium threaded cage (interfix) to examine operative indication, complications and postoperative treatment. Their mean age at surgery was 36.4. The mean follow-up period was 2.1 years. All of them started to stand up, sit down and walk with lumber belt two days after surgery. They wore the lumber belt for three months. There were no major complications except one superficial infection. Radiographically there was no loosening around cages and pedicle screws. Though the titanium threaded cage was hard to examine the fusion, we inserted a local bone in front of the cage to monitor for fusion between cages. In cases which underwent PLIF without pedicle screw systems, the disc height was restored to the titanium threaded cage. The titanium threaded cage was very useful for L5/S1 disorder because of excellent stabilization in an early stage.