title: [Criteria for evaluating hip joint arthroplasty].
abstract: Development and state of the art of the Total Hip Replacement (THR) are reviewed. Progress since the introduction of the "low friction arthroplasty" by John Charnley/UK over 40 years ago consists first of all in an impressive reduction of the number and severity of complications: infection, failures of materials, thromboembolism and aseptic loosening. Current 10 year survival rates should not be lower than 97%. This high standard of THR performance has become the greatest obstacle to further progress. The most important factors for the assessment and the outcome of a THR are the operative (cementing) technique, the mechanical design of the prosthesis, the characteristics of the surfaces (implant, bone cement, bone) and the materials used. A prognosis of the survival of a THR can be made based on negative subjective clinical and negative objective criteria. On X-ray films these criteria are shown first of all as changes (radiolucency, osteolysis, progressive migration) at the implant-bone interface and within the periprosthetic bone itself.
authors.affiliation: Orthopädischen Universitätsklinik Basel.
authors.forename: E
authors.initials: E
authors.lastname: Morscher
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000379:methods* / Q000401:mortality; D001843:Bone Cements / Q000627:therapeutic use; D006622:Hip Prosthesis / Q000145:classification; D006801:Humans; D011183:Postoperative Complications / Q000209:etiology* / Q000401:mortality; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011785:Quality Assurance, Health Care / Q000379:methods*; D015996:Survival Rate; D013557:Switzerland
chemical_list: D001843:Bone Cements