Role of Photofunctionalization in Orthopedic Customized Implants

Abstract

Ultraviolet (UV) photofunctionalization is a promising surface activation strategy for orthopedic implants that offers a safe, coating-free, and intraoperatively applicable approach to enhance bone implant integration. This commentary evaluates the translational potential of UV photofuntionalization and outlines key mechanisms and applications. By removing hydrocarbons and increasing hydrophilicity and protein adsorption, UV treatment transforms titanium into a biologically active interface that accelerates osteoblast attachment, proliferation, and differentiation. Evidence from in vitro and in vivo models, including diabetic and osteoporotic conditions, demonstrates consistently improved osseointegration, while early clinical data indicate reduced healing time and enhanced implant stability, especially in spinal fusion and large bone defect reconstruction. Moreover, UV photofunctionalization synergizes with advanced implant technologies, such as 3D-printed porous scaffolds, ion-doped alloys, and polymer–metal composites, enhancing biological performance without altering geometry or introducing chemical agents. Despite challenges in standardization and workflow integration, the intraoperative applicability and favorable safety profile of UV photofunctionalization support readiness for clinical adoption. Given the demand for effective strategies in complex or biologically compromised bone reconstructions, UV photofunctionalization represents a novel, additive-free, deployable method that significantly improves osseointegration across implant materials, even under high-risk conditions, ultimately enhancing outcomes and reducing implant failure.

Keywords

Bone defects / osseointegration / photofunctionalization / surface modification

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