The results of treatment of the first 12 Danish patients with the Brånemark titanium implant system and the bone-anchored hearing aid (BAHA) are reported. All implants were osseointegrated, judged by 99mTC-scintigraphy, X-ray examination and clinical examination. Skin reactions were few, transient and short lasting. The patients experienced the BAHA to be superior to both conventional BC hearing aids and AC hearing aids in practically all respects. Speech discrimination scores in quiet and in noise were similar for the 3 types of hearing aids.