Norwegian Arthroplasty Registry

Australian National Arthroplasty Registry

Canadian Joint Replacement Registry

New Zealand National Joint Register

England and Wales National Joint Registry

Romanian Arthroplasty Register

Finnish Endoprosthesis Register

Scottish Arthroplasty Project

Dansk Selskab for Hofte- & Knæalloplastik kirurgi

Dansk Knæalloplastik Register

DADL

The Nordic Orthopaedic Federation

The Bone and Joint Decade

European Federation of National Associations of Orthopaedics and Traumatology