RT Journal Article SR Electronic T1 Osteoimmunology: Interactions With the Immune System in Spinal Fusion JF International Journal of Spine Surgery JO Int J Spine Surg FD International Society for the Advancement of Spine Surgery SP S9 OP S17 DO 10.14444/8556 VO 17 IS S3 A1 Bergin, Stephen M. A1 Crutcher, Clifford L. A1 Keeler, Carolyn A1 Rocos, Brett A1 Haglund, Michael M. A1 Michael Guo, H. A1 Gottfried, Oren N. A1 Richardson, William J. A1 Than, Khoi D. YR 2023 UL https://www.ijssurgery.com/content/17/S3/S9.abstract AB Spinal fusion is important for the clinical success of patients undergoing surgery, and the immune system plays an increasingly recognized role. Osteoimmunology is the study of the interactions between the immune system and bone. Inflammation impacts the osteogenic, osteoconductive, and osteoinductive properties of bone grafts and substitutes and ultimately influences the success of spinal fusion. Macrophages have emerged as important cells for coordinating the immune response following spinal fusion surgery, and macrophage-derived cytokines impact each phase of bone graft healing. This review explores the cellular and molecular immune processes that regulate bone homeostasis and healing during spinal fusion.