Bone fractures can affect people of all ages, leading to an unpleasant and painful experience and possibly disabilities. Open reduction internal fixation (ORIF) with metal plates and screws provides excellent fracture fixation stability; however, the implants often cause soft-tissue adhesion and lack patient-specific customisability due to their inherent rigidity. Research is therefore ongoing to obtain a customisable, fully composite bone fracture fixation system. In this work, the substitution of metal screws with thiol-ene composite ones was investigated for use in AdhFix procedures. AdhFix offers an innovative system for customisable bone fixation patches (BFPs). A thiol-ene composite based on triazine-trione derivatives and inorganic fillers is applied topologically over the bone fracture and around pre-inserted screws.