The study, conducted by Marek Szpalski, Hopitaux Iris Sud-Moliere Longchamp, Universite Libre de Bruxelles, Bruxelles, Belgium; Robert Gunzburg, Department of Orthopaedics, Eeuwfeesikliniek, Antwerpen, Belgium; and Herve Deramond, Service de Radiologie A, CHU Amiens-Hopital Nord,
Amiens, France, found that CORTOSS injected vertebral bodies were almost twice as strong as vertebral bodies injected with PMMA.