title: Fatigue fracture of a short stem hip replacement: a failure analysis with electron microscopy and review of the literature.
abstract: Four years after primary implantation of an ESKA Cut short-stemmed prosthesis, a 61-year-old patient suffered fracture of the implant. The combination of missing proximal support of the prosthesis as well as enormous strain on the distal third of the stem can be considered as main reason for the fatigue failure. The special design of the modular implant with a small diameter and a spongy metal surface can be regarded as a contributing factor. This unique case demonstrates a possible failure mechanism of short- and ultra short-stemmed prostheses.
authors.affiliation: Clinic and Policlinic for Orthopaedic Surgery, University Hospital Giessen and Marburg GmbH, Giessen, Germany.
authors.forename: Bernd A
authors.initials: BA
authors.lastname: Ishaque
authors.forename: Henning
authors.initials: H
authors.lastname: Stürz
authors.forename: Erhan
authors.initials: E
authors.lastname: Basad
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods; D019544:Equipment Failure Analysis; D005260:Female; D015775:Fractures, Stress / Q000000981:diagnostic imaging* / Q000601:surgery; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008854:Microscopy, Electron; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D010146:Pain / Q000188:drug therapy / Q000209:etiology; D057068:Periprosthetic Fractures / Q000000981:diagnostic imaging* / Q000601:surgery; D011475:Prosthesis Failure / Q000009:adverse effects; D011859:Radiography; D012086:Reoperation; D016896:Treatment Outcome
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal