To obtain rapid and solid fusion, and to diminish the non-union rate, circumferential motor-segment fusion technique was employed for unstable lumbar disc degeneration.
This techniques contains; (1) posterior interverbral body fusion after bilateral discectomy, (2) spinous processes fusion with strut bone grafts at the bibilateral and interlaminal space reinforced by wire fixation, and (3) posterolateral fusion. We operated on 19 patients which contained 4 spondylolisthesis, 3 degenerative spondylolisthesis, 3 multiple operated back, and 9 unstable disc lesions. In all of them, Symptoms were greatly diminished in early periods after surgery. There was no pseudarthrosis (no rabid-lucent area and no collapse of grafted bone) at follow-up examinations.
