Those who have used traditional biomaterials as bone substitutes have always regarded the immune response as an obstacle leading to implant failure. However, cumulative evidence revealed that blindly minimizing host immune reactions cannot induce successful bone regeneration. With the emergence of the new concept of osteoimmunology, the intimate mutual effects between the skeletal system and the immune system have been gradually recognized, promoting the innovation of biomaterials with osteoimmunomodulatory properties. By tuning the surface properties, biomaterials can precisely manipulate the osteoimmune environment favoring bone regeneration. In this review, we first reviewed the mutual effects between the skeletal system and the immune system to show the importance of immunomodulation on bone regeneration. Subsequently, we summarize the recent developments in surface modification strategies in terms of the surface physicochemical properties and surface coatings and explain how these modification strategies work.
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