Comparison of Spinous Process-Splitting Laminectomy versus Conventional Laminectomy for Lumbar Spinal Stenosis.
- Author:
Masashi UEHARA
1
;
Jun TAKAHASHI
;
Hiroyuki HASHIDATE
;
Keijiro MUKAIYAMA
;
Shugo KURAISHI
;
Masayuki SHIMIZU
;
Shota IKEGAMI
;
Toshimasa FUTATSUGI
;
Nobuhide OGIHARA
;
Hiroki HIRABAYASHI
;
Hiroyuki KATO
Author Information
- Publication Type:Comparative Study ; Original Article
- Keywords: Lumbar spinal stenosis; Spinous process-splitting laminectomy; Postoperative low back pain; Paravertebral muscle, posterior approach
- MeSH: Asian Continental Ancestry Group; Body Temperature; C-Reactive Protein; Decompression; Follow-Up Studies; Humans; Laminectomy*; Retrospective Studies; Spinal Stenosis*
- From:Asian Spine Journal 2014;8(6):768-776
- CountryRepublic of Korea
- Language:English
- Abstract: STUDY DESIGN: Seventy-five patients who had been treated for lumbar spinal stenosis (LSS) were reviewed retrospectively. PURPOSE: Invasion into the paravertebral muscle can cause major problems after laminectomy for LSS. To address these problems, we performed spinous process-splitting laminectomy. We present a comparative study of decompression of LSS using 2 approaches. OVERVIEW OF LITERATURE: There are no other study has investigated the lumbar spinal instability after spinous process-splitting laminectomy. METHODS: This study included 75 patients who underwent laminectomy for the treatment of LSS and who were observed through follow-ups for more than 2 years. Fifty-five patients underwent spinous process-splitting laminectomy (splitting group) and 20 patients underwent conventional laminectomy (conventional group). We evaluated the clinical and radiographic results of each surgical procedure. RESULTS: Japanese Orthopaedic Association score improved significantly in both groups two years postoperatively. The following values were all significantly lower, as shown with p-values, in the splitting group compared to the conventional group: average operating time (p=0.002), postoperative C-reactive protein level (p=0.006), the mean postoperative number of days until returning to normal body temperature (p=0.047), and the mean change in angulation 2 years postoperatively (p=0.007). The adjacent segment degeneration occurred in 6 patients (10.9%) in the splitting group and 11 patients (55.0%) in the conventional group. CONCLUSIONS: In this study, the spinous process-splitting laminectomy was shown to be less invasive and more stable for patients with LSS, compared to the conventional laminectomy.
