Investigation of Sacroiliac Fusion Treatment (INSITE)

The intended analysis was to examine differences in responses at 6 months. It was acknowledged that subjects with chronic pain in the NSM arm group might not experience any benefit as there was little evidence at the time that NSM was helpful. The protocol included optional crossover to other treatments, including surgical treatment. The protocol anticipated a high crossover rate and therefore did not include any comparative analyses after month 6.