On September 9-10, 2018, the Interreg Bone Consortium held its fourth project meeting at the MERLN Institute, Maastricht University. We have had a successful two day meeting with fruitful discussions on the project progress. For the second day of the meeting we invited the BONE advisory board. The advisory board members discussed with the consortium the goals of the project and gave valuable hints towards the application and the approval of our planned technology and implants. We would to thank them for their support!