'Report on Thirty Years Experience of Major Bone and Joint Replacement for the Preservation of Links' Typescript paper entitled 'Report on Thirty Years Experience of Major Bone and Joint Replacement for the Preservation of Links', by John T Scales of the Department of Biomedical Engineering at the Institute of Orthopaedics. The paper was submitted to the Department of Health and Social Security for consideration at a meeting on 18 Jul 1979. 1979