Figure 1From: Distraction test of the posterior superior iliac spine (PSIS) in the diagnosis of sacroiliac joint arthropathy Flow chart. Flow chart showing inclusion and exclusion of patients. Forty-eight patients with 109 symptomatic SIJ were enrolled and after exclusion of 38 patients, 46 patients with 61 symptomatic SIJ were analyzed. For the control group, 32 patients with 64 asymptomatic SIJ were enrolled and analyzed.Back to article page