[1] Hop Roger Salengro, Serv Radiol Osteoarticulaire, F-59037 Lille, France
[2] Univ Paris 05, Fac Med, F-75014 Paris, France
[3] Hop Cochin, AP HP, Serv Rhumatol, F-75014 Paris, France
[4] Hop Raymond Poincare, AP HP, Fac Med, Serv Radiol, F-92380 Garches, France
[5] Hop Univ Strasbourg, Serv Radiol B, F-67091 Strasbourg, France
[6] CHU Hotel Dieu, Serv Chirurg Orthoped, F-44093 Nantes 1, France
[7] Hop Cantonal Fribourg, Clin Chirurg Orthoped, Fribourg, Switzerland
[8] Hop Cantonal Fribourg, Clin Chirurg, Serv Neurochirurg, Fribourg, Switzerland
[9] Hop Lariboisiere, AP HP, Fac Lariboisiere St Louis, Serv Chirurg Orthoped, F-75475 Paris 10, France
[10] Univ Paris 11, CHU Bicetre, Serv Chirurg Orthoped, F-94275 Le Kremlin Bicetre, France