45 Sacroiliac Block
Perspective
Patient Selection
Patients undergoing evaluation for low-back pain should be evaluated clinically for sacroiliac pain. These patients typically complain of unilateral low-back pain, which often radiates into the ipsilateral buttock, groin, or leg. Often these patients have symptoms similar to those characteristic of facet joint syndromes. During the clinical examination, an increase in pain with pressure over the sacroiliac joint suggests sacroiliac pain. If such pain is present, provocative maneuvers that increase sacroiliac joint motion should be performed, such as Gaenslen’s test and the flamingo test (Fig. 45-1).
