Most important national and international collaborators
National
- Akerhus University Hospital (AHUS)
- Asker & Bærum Hospital
- Institute for Surgical Research, OUH
- Gjøvik Hospital
- Lovisenberg Diaconal Hospital
- Norwegian School of Sport Sciences
- Sunnaas Rehabilitation Hospital
- The Norwegian Arthrosplasty Register
- Østfold Hospital Health Authority
International
- University of Tampere, Finland
- Aarhus University Hospital, Denmark
- AO Trauma / Orthopaedic Trauma Association classification committee
- New Royal Adelaide Hospital, Australia - Sahlgrenska University Hospital, Gothenburg, Sweden
- Steadman Philippon Research Institute, Colorado, USA
- Uppsala University Hospital, Sweden