1. Department of Orthopaedics and Traumatology
2. Unit for Sports and Exercise Medicine, Institute of Biomedicine, University of Helsinki, Leinikkitie 32B, 01350 Vantaa, Finland.
3. Department of Diagnostic Radiology, Töölö Hospital, University of Helsinki, Topeliuksenkatu 5, 00260 Helsin-ki, Finland.
4. Department of Radiology/MRI, Brigham and Women’s Hospital, 75 Francis Street, Boston, Massachusetts 02115, USA.