Abstract: A biomaterial for osteoplasty has a preserved native spatial organization of collagen matrix and mineral component of bone fabrics of natural origin, for example, containing 25% collagen and 75% mineral substances. The biomaterial is demineralized (compared to original concentration) to contain from 0 to 95% of the original mineral concentration, preferably from 5 to 80%, more preferably from 10 to 60%. The proteins are composed of 99% of collagen and 1% of other proteins. The biomaterial contains bone sulfated glycosaminoglycans (sGAG), whose concentration varies from 0.3 to 3 mg per 1 cm3 of the material. The sGAG is affinity-bound to the bone matrix. The biomaterial may also include bisphosphonates, whose concentration varies from 0.2 to 10 micrograms per 1 gram of material. The biomaterial may also include bone the morphogenetic proteins (BMP), whose concentration varies from 0.001 to 1 micrograms per 1 gram of material.

Abstract: A biomaterial for osteoplasty has a preserved native spatial organization of collagen matrix and mineral component of bone fabrics of natural origin, for example, containing 25% collagen and 75% mineral substances. The biomaterial is demineralized (compared to original concentration) to contain from 0 to 95% of the original mineral concentration, preferably from 5 to 80%, more preferably from 10 to 60%. The proteins are composed of 99% of collagen and 1% of other proteins. The biomaterial contains bone sulfated glycosaminoglycans (sGAG), whose concentration varies from 0.3 to 3 mg per 1 cm3 of the material. The sGAG is affinity-bound to the bone matrix. The biomaterial may also include bisphosphonates, whose concentration varies from 0.2 to 10 micrograms per 1 gram of material. The biomaterial may also include bone the morphogenetic proteins (BMP), whose concentration varies from 0.001 to 1 micrograms per 1 gram of material.

Abstract: A method for obtaining of biomaterials for osteoplasty and tissue engineering cleans a bone of natural origin, which is sawn to plates with a thickness of 0.2 to 2.0 cm, washed twice in 0.1 M phosphate buffer at 65° C., pH 5.8-6.0, calculated as two volumetric parts of the buffer solution per one part of bone, digested in a solution of activated 0.1-0.4% papain at 65° C. for 24 hours. The plates are washed with 5 volumes of water at the temperature 40-80° C., treated with 0.4 N alkali solution at room temperature for 10-24 hours, washed with flowing water, dried, defatted in ethanol/chloroform mixtures in proportion of 1:2 and then in proportion of 2:1, decalcified in 0.4-1 N hydrochloric acid, treated with 1.5-3% hydrogen peroxide for 4 hours, washed with treated water, then washed with ethanol, dried at room temperature, packed and sterilized.

Abstract: A method for isolating sulphated glycosaminoglycans washes a mechanically cleaned tissue, exposes tissue in a solution of 0.1M phosphate pH 5.8-6.0 buffer heated to a temperature of 65° C. for 30 minutes, overcooks the tissue in activated 0.1-0.4% papain at 65° C. for 6-24 hours, cools the papain digest to 4° C., removes fats and undigested tissue residues, selectively isolates the sulphated glycosaminoglycans for 4-10 hours on a solid carrier, obtained from bone tissue collagen with particle sizes ranging from 0-01 to 0.35 cm3, washes the carrier with 0.05-0.1 N-hydrochloric acid, degreases and eluates the carrier with a solution of 0.6-0.15 N-mineral salt in 0.8 N-acetic acid or in 0-01-0-025 N-alkali liquor, precipitates the sulphated glycosaminoglycans with ethanol, centrifuges with 1500 r.p.m. for 15 minutes at a temperature of 4° C., washes the precipitate with ethanol or acetone, and dries and sterilizes the precipitate.

Abstract: A method for isolating sulphated glycosaminoglycans washes a mechanically cleaned tissue, exposes tissue in a solution of 0.1M phosphate pH 5.8-6.0 buffer heated to a temperature of 65° C. for 30 minutes, overcooks the tissue in activated 0.1-0.4% papain at 65° C. for 6-24 hours, cools the papain digest to 4° C., removes fats and undigested tissue residues, selectively isolates the sulphated glycosaminoglycans for 4-10 hours on a solid carrier, obtained from bone tissue collagen with particle sizes ranging from 0-01 to 0.35 cm3, washes the carrier with 0.05-0.1 N-hydrochloric acid, degreases and eluates the carrier with a solution of 0.6-0.15 N-mineral salt in 0.8 N-acetic acid or in 0-01-0-025 N-alkali liquor, precipitates the sulphated glycosaminoglycans with ethanol, centrifuges with 1500 r.p.m. for 15 minutes at a temperature of 4° C., washes the precipitate with ethanol or acetone, and dries and sterilizes the precipitate.

Abstract: A method for obtaining of biomaterials for osteoplasty and tissue engineering cleans a bone of natural origin, which is sawn to plates with a thickness of 0.2 to 2.0 cm, washed twice in 0.1 M phosphate buffer at 65° C., pH 5.8-6.0, calculated as two volumetric parts of the buffer solution per one part of bone, digested in a solution of activated 0.1-0.4% papain at 65° C. for 24 hours. The plates are washed with 5 volumes of water at the temperature 40-80° C., treated with 0.4 N alkali solution at room temperature for 10-24 hours, washed with flowing water, dried, defatted in ethanol/chloroform mixtures in proportion of 1:2 and then in proportion of 2:1, decalcified in 0.4-1 N hydrochloric acid, treated with 1.5-3% hydrogen peroxide for 4 hours, washed with treated water, then washed with ethanol, dried at room temperature, packed and sterilized.