[A study on the closure of radical cavities. Animal experiments (author's transl)].

Preserved homograft bone chips were implanted into the middle ears of 12 rabbits with close contact of the graft with the bony wall of the bulla. Bone new formation was observed in all grafts, but remodelling was incomplete after a year. The bone chips were connected to the graft bed by new host bone. The homograft was identified by radioactive labelling. For bone new formation the intercellular substance of the transplant was removed by thost tissue and was partly reused in bone new formation.