The researchers evaluated 46 patients who underwent implantation of X-Stop interspinous spacer for treating neurogenic claudication with an average follow-up of 40 months. They found the revision rate at 30.4 percent and discovered:
• Lack of improvement at six-week follow up was correlated with revision surgery.
• Revision procedures predominantly took place 12 months after the index surgery.
• Patients who didn’t need revision surgery experienced significant improvement in clinical outcomes.
• Implant survival rate probability was 0.68 on the Kaplan-Meier survivorship analysis at 48 months postoperatively.
The authors suggested patient selection could be a reason for early revision surgery.
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