Method for manufacturing an implant for filling in bone defects for bone regeneration and bone tissue engineering, characterised in that it comprises the following steps: a) selecting a bioactive glass M based on SiO 2 and CaO, optionally containing P 2 O 5 and/or optionally doped with strontium, b) selecting a biodegradable polymer P which is soluble in at least one solvent S1 and insoluble in at least one solvent S, c) selecting microspheres of a porogen A having diameters and sizes which correspond to the desired diameters and sizes of the pores in an implant material, the material of said porogen A being a polymer which is insoluble in the at least one solvent S1 and soluble in the at least one solvent S, wherein the at least one solvent S in which the biodegradable polymer P is insoluble and the at least one solvent S in which the material of the porogen A is soluble are identical, d) introduction of at least 60% by volume, preferably at least 70% by volume with respect to the total volume of the biodegradable polymer P/porogen A mixture introduced into the mould, of microspheres of the porogen A into a mould having the desired shape and size for the implant, said microspheres forming a compact stack corresponding to the shape and size of the pores to be obtained in the implant material, e) introducing the biodegradable polymer P into the mould, f) gelling the mixture obtained in step e) in the mould, g) removing the mixture obtained in step f) from the mould, h) eliminating the porogen by washing with the at least one solvent S, i) crosslinking the mixture obtained in step g), j) coating the mixture obtained in step i) with the bioactive glass M or with a hybrid material H formed of a biodegradable polymer which is identical to or different from the biodegradable polymer P and bioactive glass M. a) selecting a bioactive glass M based on SiO 2 and CaO, optionally containing P 2 O 5 and/or optionally doped with strontium, b) selecting a biodegradable polymer P which is soluble in at least one solvent S1 and insoluble in at least one solvent S, c) selecting microspheres of a porogen A having diameters and sizes which correspond to the desired diameters and sizes of the pores in an implant material, the material of said porogen A being a polymer which is insoluble in the at least one solvent S1 and soluble in the at least one solvent S, d) introduction of at least 60% by volume, preferably at least 70% by volume with respect to the total volume of the biodegradable polymer P/porogen A mixture introduced into the mould, of microspheres of the porogen A into a mould having the desired shape and size for the implant, said microspheres forming a compact stack corresponding to the shape and size of the pores to be obtained in the implant material, e) introducing the biodegradable polymer P into the mould, f) gelling the mixture obtained in step e) in the mould, g) removing the mixture obtained in step f) from the mould, h) eliminating the porogen by washing with the at least one solvent S, i) crosslinking the mixture obtained in step g), j) coating the mixture obtained in step i) with the bioactive glass M or with a hybrid material H formed of a biodegradable polymer which is identical to or different from the biodegradable polymer P and bioactive glass M.