[1] Univ Libre Bruxelles, Ave Franklin Roosevelt 50, B-1050 Brussels, Belgium
[2] Ath Hosp, Orthopaed Dept, EpiCURA Baudour, Hornu, Rue Louis Caty 136, B-7331 St Ghislain, Hainaut, Belgium
[3] Aristotle Univ Thessaloniki, G Gennimatas Gen Hosp, Dept Orthopaed Surg & Traumatol 2, Thessaloniki, Hellas, Greece
[4] Univ Libre Bruxelles, Bone & Metab Biochem Res Lab, Lab Biochim Osseuse & Metab ULB, Lenniksebaan 808, B-1070 Brussels, Belgium