title: The use of a ceramic talar body prosthesis in patients with aseptic necrosis of the talus.
abstract: The purpose of this study was to evaluate the   clinical results of a newly designed prosthesis to replace the body   of the talus in patients with aseptic necrosis. Between 1999 and   2006, 22 tali in 22 patients were replaced with a ceramic prosthesis.   A total of eight patients were treated with the first-generation   prosthesis, incorporating a peg to fix into the retained neck and   head of the talus, and the remaining 14 were treated with the second-generation prosthesis,   which does not have the peg. The clinical results were assessed   by the American Orthopaedic Foot and Ankle Society ankle/hindfoot   scale. The mean follow-up was 98 months (18 to 174). The clinical results   of the first-generation prostheses were excellent in three patients,   good in one, fair in three and poor in one. There were, however,   radiological signs of loosening, prompting a change in design. The   clinical results of the second-generation prostheses were excellent   in three patients, good in five, fair in four and poor in two, with   more favourable radiological appearances. Revision was required   using a total talar implant in four patients, two in each group. Although the second-generation prosthesis produced better results,   we cannot recommend the use of a talar body prosthesis. We now recommend   the use of a total talar implant in these patients.
authors.affiliation: Nara Medical University, Department of Orthopaedic Surgery, 840 Shijyo-cho, Kashihara Chity, Nara 634-8522, Japan. a-tani@naramed-u.ac.jp
authors.forename: A
authors.initials: A
authors.lastname: Taniguchi
authors.forename: Y
authors.initials: Y
authors.lastname: Takakura
authors.forename: K
authors.initials: K
authors.lastname: Sugimoto
authors.forename: K
authors.initials: K
authors.lastname: Hayashi
authors.forename: K
authors.initials: K
authors.lastname: Ouchi
authors.forename: T
authors.initials: T
authors.lastname: Kumai
authors.forename: Y
authors.initials: Y
authors.lastname: Tanaka
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000843:Ankle Joint / Q000473:pathology / Q000601:surgery*; D002516:Ceramics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010020:Osteonecrosis / Q000601:surgery*; D011474:Prosthesis Design; D013628:Talus / Q000473:pathology / Q000601:surgery*; D016896:Treatment Outcome