Document Detail

Two-year results of x-stop interspinous implant for the treatment of lumbar spinal stenosis: a prospective study.
MedLine Citation:
PMID:  23348569     Owner:  NLM     Status:  In-Data-Review    
STUDY DESIGN: : Prospective Observational Study.
OBJECTIVE: : To prospectively assess the clinical outcome of patients treated for symptomatic spinal stenosis with the X-stop device.
SUMMARY OF BACKGROUND DATA: : The X-stop device is used in the treatment of symptomatic lumbar spinal stenosis. The preliminary results of this study of 40 patients at 1 year were published in 2007. The 2-year results of 57 patients are reported in this paper. Zucherman et al report 60% significant improvement at 1 year and 48.4% at 2 years.
METHODS: : Fifty-seven consecutive patients with radiologically confirmed lumbar spinal stenosis were enrolled and treated with the X-stop device. The device was implanted at a maximum of 2 affected levels. Clinical response was evaluated with the Zurich Claudication Questionnaire (ZCQ), Oswestry Disability Index, and Short Form-36 questionnaires preoperatively and 6, 12, and 24 months postoperatively.
RESULTS: : Of the 57 patients enrolled, 54 completed the ZCQ questionnaire at 1 year and 46 patients at 2 years. Clinically significant improvement was attained by 65% at 1 year and 57% at 2 years and 70% were satisfied with the outcome of the surgery. Single level and double level insertions did not have significant difference in clinical outcome.
CONCLUSION: : This study demonstrates with the use of ZCQ scores as primary outcome measures that improved clinical outcomes are maintained at 2 years after X-stop implantation.
Anjali Nandakumar; Natasha A Clark; Francis W Smith; Douglas Wardlaw
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of spinal disorders & techniques     Volume:  26     ISSN:  1539-2465     ISO Abbreviation:  J Spinal Disord Tech     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101140323     Medline TA:  J Spinal Disord Tech     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1-7     Citation Subset:  IM    
NHS Grampian and University of Aberdeen, Departments of Orthopaedics and Radiology, Positional MRI Centre, Woodend Hospital, Aberdeen, Scotland, UK.
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