Abstract
MANY materials have been used successfully for the reconstruction of the middle ear. Ossicular remnants are the most widely used material for this purpose. These autografts are well tolerated and even retain some viability.1When no remnants are available, other types of grafts have been incorporated with varying degrees of success. These include homografts,2autogenous tragal cartilage,3soft tissue,4polyethylene, wire, and other materials.5In certain situations there is still a need for a substance that is packaged, sterile, nonantigenic, and readily available. Raymond-Jones6reported on the use of deproteinized, lyophilized calf bone as a stapedectomy prosthesis in humans. His initial results were encouraging, but there have been no further reports and no animal studies have been done. The purpose of this study was to examine the response of the monkey middle ear to this material. Since autogenous bone has such proven value

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