[Hydroxyapatite-coated total hip prosthesis. 3d-generation hip prostheses]

Since 1987, 80 hydroxyapatite-coated (HA) cementless total hip prostheses have been implanted. Thirty patients were examined 21 months post-operatively and the results compared with data for uncoated prosthesis. Earlier mobilisation and freedom from pain, together with evidence of bone ingrowth without connective tissue membrane formation, confirmed the benefits of HA-coated prostheses.