NOVELTY - Forming an open cell porous body involves determining foam bubble diameter by using an algorithm to yield a desired pore cell diameter in open-cell porous body; foaming the obtained particulate-laden foamable solution into a stable, uniform froth consisting of foam bubbles of predetermined diameter; forming the froth into a green body of desired shape, while heating to gelling temperature of protein substance; removing all aqueous and organic constituents from green body through heating in air/gaseous atmosphere/vacuum; and sintering obtained organic-free dodecahedral architecture.    USE - For production of an open cell porous body, particularly as a sintered open cell porous body which is an implantable medical device such as a prosthetic hip joint or an oral endosseous implant (preferably dental implantodontic appliance or an acetabular cup) (claimed). The porous structures are also useful in e.g. thermal and acoustic insulating materials, filters, membranes, catalyst supports, fuel cells, and lightweight materials.    ADVANTAGE - The method for producing an open cell porous body does not require the use of an organic binder; and has an ability to economically produce structural inorganic cellular materials with uniform, spherical, isotropically distributed, controlled open porosity. Specifically, the present method allows economical fabrication of engineered porous biomedical implants with optimized osteoconductive properties from materials such as tantalum, niobium, titanium, tricalcium phosphate (TCP) and/or their alloys.    DETAILED DESCRIPTION - Production of an open cell porous body involves rendering surfaces of sinterable particulate materials hydrophobic by adsorbing a collector on same; preparing a foamable solution of water and a protein substance which is soluble in water at ambient temperatures and capable of forming an irreversible gel upon heating; mixing the obtained hydrophobic particulate materials into the foamable solution in quantities such that the volume ratio of foamable solution to the total volume corresponds to the intended open porosity in the open-cell porous body; by using an algorithm, determining the foam bubble diameter needed to yield a desired pore cell diameter in the open-cell porous body; foaming the obtained particulate-laden foamable solution into a stable, uniform froth consisting of foam bubbles of the predetermined diameter; forming the froth into a green body of the desired shape by molding, casting or extruding, while heating to the gelling temperature of the protein substance; removing all aqueous and organic constituents from the green body through heating in air, in a gaseous atmosphere or in a vacuum, leaving behind a dried, organic-free dodecahedral architecture; and sintering the organic-free dodecahedral architecture into an open cell porous body without significant shrinkage taking place during sintering.