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. The company is headquartered in Santa Clara, California and currently employs 344 full-time employees. The company went IPO on 2018-10-17. The firm specializes in minimally invasive surgical implant systems to address sacroiliac joint dysfunction as well as address unmet clinical needs in pelvic fixation and management of pelvic fractures. The firm's products include a series of patented titanium implants and the instruments used to implant them, as well as implantable bone products. Its products include iFuse, iFuse-3D, iFuse-TORQ and iFuse Bedrock Granite. Within the United States, iFuse, iFuse-3D and iFuse-TORQ have clearances for applications across sacroiliac joint dysfunction and fusion, adult spinal deformity and degeneration, and pelvic trauma. Its first-generation iFuse, a machined triangular titanium implant, has a triangular cross section that resists twisting or rotation of the implant. The firm's second generation iFuse product, the iFuse-3D implant, is a patented titanium implant.