The sacroiliac joint is a connecting link between the axial and appendicular skeleton and provides stability via transmission and dissipation of truncal load to the lower extremities. The reported prevalence of sacroiliac joint pain varies, ranging from 10% to 62%, but most frequently is approximately 25%. This video reviews physical examination techniques for the diagnosis of sacroiliac joint pain. Sacroiliac joint pain is difficult to diagnose, and physical examination tests generally are more helpful in ruling out than confirming sacroiliac joint pain. This is discussed in the context of the individual and combined sensitivity, specificity, and positive and negative predictive values of each physical examination test.