title: [Hemi-alloarthroplasty with intermediary hip joint endoprosthesis].
abstract: Intermediary (bipolar) endoprostheses have been used for the treatment of hip fractures in the past 30 years. Our cinematographic X-ray examinations have confirmed the function of the intra-prosthetic joint in vivo. Physiological load distribution in the acetabulum of "hard-top" cups was demonstrated in an experimental model by holographic interferometry. Our follow-up of 634 intermediary endoprostheses which had been implanted in a 15-years period demonstrated good clinical results. But it confirmed that "soft-top" cups should no longer be used because of the problems of polyethylene wear debris from the cup surfaces. Scintigraphic examinations in 123 cases showed the advantage of the test over X-ray examinations in early recognition of acetabular protrusion.
authors.affiliation: Abt. für Unfallchirurgie des Sankt Gertrauden-Krankenhauses, Berlin.
authors.forename: H G
authors.initials: HG
authors.lastname: Breyer
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D005260:Female; D005500:Follow-Up Studies; D006620:Hip Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology
vernacular_title: Die Hemi-Alloarthroplastik mit intermediären Hüftgelenks-Endoprothesen.