Comparison of two different physical therapy treatments for low back pain from the sacroiliac joints

This study is comparing two physiotherapy treatment approaches for low back pain coming from the sacroiliac joints (the joints where the spine meets the pelvis). One approach uses a unique set of specific exercises, and the other uses a traditional combination of exercises, a supportive belt, heat, massage, and electrical stimulation. Researchers want to see which approach reduces pain and improves function more effectively. You may be eligible if: - You are between 18 and 75 years old (male or female) - You have had sacroiliac joint pain for 3 months or more - You have pain over one or both sacroiliac joints or in the buttock area - At least 3 specific physical tests for sacroiliac joint pain are positive You may NOT be eligible if: - Your pain extends above the L5 vertebra (higher up the back) - You are pregnant - Your pain has lasted less than 3 months - You have received treatment for sacroiliac joint pain within the past 2 weeks - You have a permanent condition such as scoliosis or ankylosing spondylitis - You have had a motor vehicle accident during the study period Talk to your doctor about whether this trial might be right for you.