Abstract: Polyurethane and poly(urea)urethane compositions as specified below are utilized as luting agents, for filling cavities or spaces in human or other animal bones, and are introduced in liquid form and formed in situ to create a polyurethane or poly(urea)urethane elastomer which is relatively compatible with the surrounding tissue, has good adhesive properties, low friability, and good tear and tensile strength. The invention includes the polyurethane and poly(urea)urethane compositions disclosed and their uses in the performance of surgery in human beings and other animals. The polyurethane and poly-(urea)urethane compositions are produced by the reaction of an "A" component prepolymer which is the reaction product of a diiosocyanate with a diol or polyol, and a two element "B" component, which may be any of the polyols used in producing the "A" component prepolymer or a relatively short chain diol or triol or a diamine (in the case of a poly(urea)urethane) or combinations thereof.

Abstract: Polyurethane and poly(urea)urethane compositions as specified below are utilized as luting agents, for filling cavities or spaces in human or other animal bones, and are introduced in liquid form and formed in situ to create a polyurethane or poly(urea)urethane elastomer which is relatively compatible with the surrounding tissue, has good adhesive properties, low friability, and good tear and tensile strength. The invention includes the polyurethane and poly(urea)urethane compositions disclosed and their uses in the performance of surgery in human beings and other animals.

Abstract: Solventless compositions for preparing sprayable polyurethanes and poly(urea)urethanes by spraying a mixture of:(a) An isocyanate-terminated prepolymer or quasi-prepolymer; and(b) A curing agent comprising a relatively highly reactive polyol or polyamine or combination thereof and at least about 20% by weight of a reactive "filler" comprising a polyol having an equivalent weight in the range from about 300 to about 2,000.