1. Department of Rheumatology
2. Department of Radiology
3. Department of Orthopaedic Surgery, Clinique Mutualiste La Sagesse, 4 place Saint Guenolè, 35043 Rennes Cedex, France.
4. Department of Orthopaedic Surgery, Hôpital-Sud, Rennes University Hospital, 16 Boulevard de Bulgarie, BP 90347, 35203 Rennes Cedex 2, France.