SI-BONE, Inc. is a medical device company, which engages in the provision of a proprietary minimally invasive surgical implant system to fuse the sacroiliac joint for treatment of musculoskeletal disorders of the sacropelvic anatomy. It offers a proprietary minimally invasive surgical implant system, called iFuse, used to fuse the sacroiliac joint to treat sacroiliac joint dysfunction that often causes severe lower back pain. The company was founded by Mark A. Reiley and Jeffrey W. Dunn on March 18, 2008 and is headquartered in Santa Clara, CA.