Outcome of Inter-Spinous Device Implantation for 85 Patients who had been Operated Microsurgically for Disc Herniation and Multi-level Canal Stenosis

Abstract

Background: The aim of this study was to assess the outcome of inter-spinous device (ISD) implantation for 85 patients who had been operated microsurgically for disc herniation and multi-level canal stenosis.

Materials and Methods: 85 patient s who has been suffering from leg pain, back pain and claudication divided to three groups, 34 patients in group A were operated for pure disc herniation; patients in group B under went operation for disc herniation and multi-level canal stenosis they were 27 patients and 24 patients in group c operated for pure canal stenosis, approach of operation was unilateral microsurgical discectomy and ISD implantation (DIAM or UNIWALLIS) for pure disc herniation, unilateral or bilateral microsurgical discectomy and foraminotomy  and ISD implantation for disc herniation and canal stenosis patients we did only bilateral fenestration plus foraminotomy and ISD implantation for the pure canal stenosis patients, visual-analogue scale (VAS) score and ODI score assessing performed for all three group patients preoperative 4 weeks post-operative 6months and one year post-operative

Results: The mean VAS score at 12 months postoperatively decreased by 39.0%. Oswestry score was 31% preoperatively, 24.7% at 6 weeks, and 20.3% at 12 months postoperatively on average. In 5 of the implanted 85 patients, the UNIWALLIS or DIAM had to be removed and reoperation had to be performed because of disc recurrence.

Conclusion: Our center results indicate not only a satisfactory short-term, but also a good long-term effect during a follow-up period of one year.