title: [Eight years experience with the "Erlangen Model" titanium prosthesis--results of cementless implantation of 250 hip prostheses].
abstract: Between March 13, 1984 and March 28, 1988, 233 patients (age range from 21 to 73 years) with osteoarthritis of one or both hips were treated with the uncemented hip replacement "Erlanger Modell" (Prof. H. Beck/P. Brehm Chirurgie-Mechanik GmbH). The cause of the osteoarthritis was variable. Hip replacement was carried out for the following conditions: rheumatoid arthritis including ankylosing spondylits (n = 29), aseptic necrosis of the femoral head including posttraumatic and idiopathic forms (n = 17), osteoarthritis of unknown origin (n = 111), osteoarthritis following dysplasia or subluxation of the hips (n = 56) and loosened cemented hip prostheses (n = 37). Full weight bearing was not permitted for 50 days postoperatively, but mobilization and isometric exercises began 2 days after operation and isotonic exercises are introduced later. Complications included fracture of the femoral shaft during operation (3.3%), fracture of the femoral shaft postoperative (1.6%), dislocation (0.8) and infection early after operation (0.4%) and aseptic loosening (3.7%). Our results of 233 patients (250 joints), ranging from 4 to 8 postoperative years giving an average of 5.3 years, are encouraging. Good results based on patients satisfaction were obtained in 95.2% (83.8% after revision) and poor results in 1.0% (2.7% after revision). 3.8% (13.5 after revision) judged their situation as unchanged. 93.3% of the patients can walk without hooked stick (53.3% after revision), 90.2% of the patients can walk more than 1000m (69.4% after revision).
authors.affiliation: Unfallchirurgische Abteilung, Universität Erlangen, Nürnberg.
authors.forename: M
authors.initials: M
authors.lastname: Walther
authors.forename: R
authors.initials: R
authors.lastname: Wölfel
authors.forename: H P
authors.initials: HP
authors.lastname: Koerfgen
authors.forename: C
authors.initials: C
authors.lastname: Kessler
mesh_terms: D000328:Adult; D000368:Aged; D001843:Bone Cements; D004185:Disability Evaluation; D005260:Female; D005271:Femur Head Necrosis / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D007870:Leg Length Inequality / Q000601:surgery; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D010147:Pain Measurement; D011183:Postoperative Complications / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D014025:Titanium
chemical_list: D001843:Bone Cements; D014025:Titanium
vernacular_title: Acht Jahre Erfahrung mit der Titanprothese "Erlanger Modell"--Ergebnisse nach zementloser Implantation von 250 Hüftprothesen.