The sacroiliac joints reside amongst the sacrum (the tailbone section of the spinal column) as well as the prominent wing-like iliac bones that sort the pelvic girdle. There are 2 SI joints, a single within the left and just one on the proper (highlighted in pink in the impression over), https://fronthippaintreatment68899.onesmablog.com/front-hip-pain-treatment-secrets-74813811