[1] Catholic Univ Louvain, Orthopaed Surg Lab, Brussels, Belgium
[2] Catholic Univ Louvain, Expt Surg Lab, Brussels, Belgium
[3] Catholic Univ Louvain, Morphol Expt Lab, Brussels, Belgium
[4] Univ Clin Hosp St Luc, Orthopaed Serv, Brussels, Belgium
[5] Ist Sperimentale Italiano Lazzaro Spallanzani, Lab Tecnol Riproduz, Cremona, Italy