Surgical Treatment of Lateral Lumbar Spinal Stenosis Using Percutaneous Interspinous Implant

Česká verzia

Authors: M. Mrůzek; T. Paleček; R. Lipina
Authors place of work: Neurochirurgická klinika LF OU a FN Ostrava
Published in the journal: Cesk Slov Neurol N 2015; 78/111(2): 167-171
Category: Original Paper

Summary

Aim:
The authors present clinical and radiological results of a 3‑year follow‑up of patients after implantation of interspinous spacers for lateral stenosis.

Cohort and methodology:
We followed 42 patients with 62 implanted interspinous spacers for a period of three years. The indication for implantation was unilateral or bilateral lateral stenosis with degenerative disc disease. Patients were examined according to an algorithm involving: neurological examination, X‑ray – plain and dynamic images, MRI, patients contraindicated for MRI underwent CT examination. Clinical findings were assessed using a VAS score, ODI and Odom criteria. X‑rays were performed and the range of motion, distraction in ventral and dorsal areas of the intervertebral disc and foramen intervertebrale and the position of the implant were evaluated. Six months and two years post‑surgery, patients underwent postoperative MRI examination and intervertebral foramen distraction in anteroposterior and craniocaudal diameter, and the assessment was compared with preoperative findings.

Results:
Implantation of interspinous spacers in the lumbar spine in a 3-year follow‑up period was followed by the mean improvement of 2.7 points on VAS score, and of 24.5% on ODI. Statistically significant difference in the distraction of the intervertebral foramen in the dorsal part of the intervertebral disc was proven by pre‑ and post‑operative MRI.

Conclusion:
Implantation of a spacer led to improved ODI and VAS parameters, distraction in the region of the intervertebral foramen, especially in the AP diameter, and in the dorsal part of an intervertebral disc.

Key words:
lumbar stenosis – surgical treatment – decompression – distraction

The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study.

The Editorial Board declares that the manuscript met the ICMJE “uniform requirements” for biomedical papers.

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