Minimally invasive sacroiliac joint fusion vs. conservative management for chronic sacroiliac joint pain

Dengler et al. have reported the 12-month results of a randomized controlled trial comparing minimally invasive sacroiliac joint fusion to conservative measures (1). This study is the second RCT (randomized control trial) of MIS SI (minimally invasive sacroiliac joint) fusion versus CM (conservative management) and it has findings consistent in direction and magnitude of effect as the first RCT (2). Why is this study important?