A sacroiliac (SI) joint injection, or a sacroiliac joint block, is primarily used to either diagnose or treat pain over the superior part of the buttock that may radiate to one of both sides down the body. This pain is more prevalent in females, particularly those that have given birth, as childbirth can cause chronic pain in the pelvic joints. Book an Appointment Chronic pain ... https://kansaspainmanagement.com/treatments/si-joint-injections/