The invention relates to an injectable bone cement for filling bones, having mechanical properties equivalent to those of the vertebral spongy bone, and containing 70 to 99 wt % of an acrylic polymer combined with a radio-opaque inorganic compound and 1 to 30 wt % of calibrated hydrophilic flexible solid particles capable of absorbing physiological fluids without generating interconnected porosity, said calibrated hydrophilic flexible solid particles being selected from gelatine, polyglycerol(sebacate), or a mixture thereof. The bone cement of the invention is in particular intended for vertebroplasty, kyphoplasty or cementoplasty.
