title: [Fracture and dislocation fracture of the os pisiforme].
abstract: Four cases of pisiform fracture are presented. In one case the largest fragment of the pisiform bone with the articular surface was dislocated. After open reduction, osteosynthesis with K-wires was performed. Two patients had an isolated fracture without fragment dislocation. They had their lower arms immobilized with a plaster of Paris cast for 4 weeks. In the fourth case the fracture of the pisiform bone was associated with an intraarticular distal radial fracture and wrist dislocation. The typical traumatic cause of pisiform fracture is a fall onto the outstretched hand. Immobilization for 4 weeks results in functional recovery. In cases with dislocation of the pisotriquetral joint open reduction and osteosynthesis are necessary. Excision of the pisiform bone is not indicated in a fresh injury.
authors.affiliation: Abteilung für Unfallchirurgie, Universitätsklinikum Rudolf Virchow, Freien Universität Berlin.
authors.forename: A
authors.initials: A
authors.lastname: Georgoulis
authors.forename: P
authors.initials: P
authors.lastname: Hertel
authors.forename: E
authors.initials: E
authors.lastname: Lais
mesh_terms: D000328:Adult; D000368:Aged; D002348:Carpal Bones / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000379:methods*; D050723:Fractures, Bone / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011859:Radiography
vernacular_title: Die Fraktur und die Luxationsfraktur des Os pisiforme.