title: [Dislocated fracture of the lesser trochanter with malrotation of the stem after robot assisted implantation of a cementless hip prosthesis: a casuistic report].
abstract: This paper presents the case of a 63 year old female with a severe coxarthrosis. She got a robot assited implantation of a cementless hip prosthesis (Osteolock, Stryker-Howmedica, Mühlheim). As operation robot the CASPAR-System (Orto-Maquet, Rastatt) was used. Initially, the clinical progress of the patient was fine. She was nearly painfree within 14 days and showed an acceptable range of motion in the operated joint (flexion/ extension 90 degrees /05 degrees /00 degrees ). She was mobilized with crutches and 15 kg weight bearing at the operated leg. 3 weeks postoperative the patient complaint about increasing pain without trauma or intensification of the weight bearing. X-rays showed not only a dislocated fracture of the lesser trochanter, but also a sinking combined with a malrotation of the stem. A revision operation was necessary,where we implanted a cemented stem. Now clinical progress was completely satisfying.
authors.affiliation: Orthopädische Universitätsklinik, Christian-Albrechts-Universität Kiel, Germany. drprymka@hotmail.com
authors.forename: M
authors.initials: M
authors.lastname: Prymka
authors.forename: J
authors.initials: J
authors.lastname: Hassenpflug
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011475:Prosthesis Failure; D012086:Reoperation; D025321:Surgery, Computer-Assisted; D013997:Time Factors
vernacular_title: Abbruch des Trochanter minor und Einsinken des Prothesenschafts nach roboterunterstützter Hüftendoprothesenimplantation. Ein Fallbericht und Aufarbeitung des Schrifttums.