Abstract: A matrix for implantation in a mammalian host comprising biocompatible, mineral-free, insoluble Type-I bone collagen which may be allogenic or xenogenic to the host, and which, when implanted in the host, is biodegradable. The collagen is treated with a collagen fibril modifying substance such as acidified acetonitrile, chloroform, or dichloromethane, or by heating in an aqueous environment to a temperature of 37.degree.-65.degree. C. The treated material undergoes a change in morphology involving a significant increase in its surface area as measured by various methods. Under the scanning electron microscope the material has an "oyster shell" appearance with many pits and micropores.

Abstract: Disclosed is a matrix material for implantation in a mammalian host comprising biocompatible mineral-free type I bone collagen, xenogenic to the host, and biodegradable therewithin. The matrix is manufactured from protein-extracted bone powder treated with certain swelling agents to increase its surface area and porosity. The matrix may be combined with osteogenic protein to induce reliably and reproducibly endochondral bone formation. It also can be used as a surface coat around implantable prosthetic devices to promote cellular ingrowth or as a carrier for sustained release of various therapeutic compositions.

Abstract: Disclosed are osteogenic devices comprising a matrix containing substantially pure mammalian osteogenic protein and methods of inducing endochondral bone growth in mammals. A partial amino acid sequence, amino acid composition, solubility properties, and various other data characterizing osteogenic protein are also disclosed, as well as a nucleic acid sequences encoding a consensus osteogenic protein.

Abstract: Disclosed are (1) osteogenic devices comprising a matrix containing osteogenic protein and methods of inducing endochondral bone growth in mammals using the devices; (2) amino acid sequence data, amino acid composition, solubility properties, structural features, homologies and various other data characterizing osteogenic proteins, (3) methods of producing osteogenic proteins using recombinant DNA technology, and (4) osteogenically and chondrogenically active synthetic protein constructs.

Abstract: Disclosed is a matrix material for implantation in a mammalian host comprising biocompatible mineral-free type I bone collagen, xenogenic to the host, and biodegradable therewithin. The matrix is manufactured from protein-extracted bone powder treated with certain swelling agents to increase its surface area and porosity. The matrix may be combined with osteogenic protein to induce reliably and reproducibly endochondral bone formation. It also can be used as a surface coat around implantable prosthetic devices to promote cellular ingrowth or as a carrier for sustained release of various therapeutic compositions.

Abstract: Disclosed are osteogenic devices comprising a matrix containing substantially pure mammalian osteogenic protein and methods of inducing endochondral bone growth in mammals. A partial amino acid sequence, amino acid composition, solubility properties, and various other data characterizing osteogenic protein are also disclosed, as well as a nucleic acid sequences encoding a consensus osteogenic protein.