 The macroporous calcium phosphate cement, MCPC, which composition is close to bone, is malleable and biocompatible, and has intrinsic radio opacity and good ability to undergo mechanical constraints. After the filling of the bone cavity, the cement hardens. Interestingly, this calcium phosphate cement has no exothermic hardening on the contrary, the ordinary cements used nowadays cause necrotic lesions in tissues around during this phase and favours vascularisation, cellular colonisation and bone healing. Thanks to its resorbability, the MCPC cement is replaced little by little by a physiologic bone. This last property is very important for young people needing a vertebroplasty after a traumatism. 