title: [Hallux rigidus operated on by Keller and Brandes method: radiological parameters of success and prognosis].
abstract: OBJECTIVE
  The aim of this study was to evaluate the pre- and postoperative radiographic findings of hallux rigidus treated with Keller and Brandes arthroplasty to determine the radiographic outcome and to identify a prognostic marker.
  
  
  METHODS
  83 patients with a total of 121 cases of hallux rigidus operated using Keller and Brandes arthroplasty were followed up (mean 9.7 y). A comparison of the pre- and postoperative radiographs, the clinical and subjective findings was predicated on a five point scale: 1. percentage of proximal phalanx resected ( < 33%, 33-50%, > 50%), 2. joint space, 3. ratio of the length of the first and second metatarsals, 4. first intermetatarsal angle, and 5. hallux valgus angle.
  
  
  RESULTS
  In the patient group which had 33-50% of the proximal phalanx excised (n = 67. 55%) the highest patient satisfaction was observed (96%). If resection of the proximal phalanx exceeded 50% (n = 13. 11%), non physiologic dorsiflexion of the toe occurred and patients were dissatisfied (62%). Excision of less than 33% of the hallux (n = 41. 34%) was associated with a recurrent hallux rigidus. No other evaluated radiological parameter proved to be of significance.
  
  
  CONCLUSIONS
  The most important radiological parameter in the evaluation of the outcome of Keller and Brandes arthroplasty as a surgical treatment method for hallux rigidus was the percentage of the proximal phalanx which had ben excised.
authors.affiliation: Abteilung für Osteologie, Universitätsklinik für Radiodiagnostik, Wien.
authors.forename: M J
authors.initials: MJ
authors.lastname: Breitenseher
authors.forename: C D
authors.initials: CD
authors.lastname: Toma
authors.forename: F
authors.initials: F
authors.lastname: Gottsauner-Wolf
authors.forename: H
authors.initials: H
authors.lastname: Imhof
mesh_terms: D000328:Adult; D000368:Aged; D001178:Arthroplasty / Q000379:methods*; D005069:Evaluation Studies as Topic; D005260:Female; D006214:Hallux / Q000000981:diagnostic imaging* / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011859:Radiography
vernacular_title: Hallux rigidus operiert nach Keller und Brandes: Radiologische Erfolgs- und Prognoseparameter.