implementation and use of a novel formulation of a idrogelo ialuronico fully reversible, containing inorganic phases microdisperse spheres based on calcium phosphates.to be injected subcutaneously or intra - articular and based on a combination of microspheres of caha (calcium hydroxy - apatite) or bcp (calcium phosphate biphasic at different concentrations) 'filled' with the acidaluronico linear or wire.