From: Two-year clinical outcomes of a multicenter randomized controlled trial comparing two interspinous spacers for treatment of moderate lumbar spinal stenosis
Variable
Experimental
Control
Axial pain success, %1
64.7
47.8
Extremity pain success, %1
76.5
69.6
Back function clinical success, %1
61.8
56.5
Freedom from spinous process fracture, %2
100
94.1
Freedom from reoperation, %2
85.0