Custom 3D-Printed Implants for Critical-Sized Bone Defects in Foot and Ankle Surgery: A Multicentre Collaborative Study Custom 3D-Printed Implants for Critical-Sized Bone Defects in Foot and Ankle Surgery: A Multicentre Collaborative Study J Mangwani, A See, L Houchen-Wolloff, 3D custom made multicentre collaborative 24 March 2025 1University Hospitals of Leicester, Leicester 2University of Nottingham, Nottingham 3University of Leicester, Leicester