title: Screw fixation of accessory carpal bone fractures in racing Greyhounds: 12 cases (1981-1986).
abstract: Fractures of the accessory carpal bone in 12 racing Greyhounds were repaired by use of internal fixation with screws. All dogs had a sprain-avulsion fracture of the distal margin of the articular surface of the accessory carpal bone, where the accessorioulnar ligament inserts (type I). Two dogs had a second avulsion fracture at the proximal margin of the articular surface, where the palmar ulnocarpal ligament inserts (type II), and 2 dogs had a second fracture at the caudal end of the bone at the insertion of the accessoriometacarpal ligaments (type III). Fractures were exposed surgically, using a palmarolateral approach between the fourth and fifth accessoriometacarpal ligaments, and were repaired using 1.5-mm or 2-mm cortical screws. Eight dogs were evaluated radiographically to monitor fracture healing. Union of fractures, with bridging of the fracture gap, usually developed by 5 to 8 weeks after surgery. Follow-up evaluation after surgical repair was possible in 11 dogs; 10 (91%) returned to training or racing, and 5 (45%) of those won 1 or more races.
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins 80523.
authors.forename: K A
authors.initials: KA
authors.lastname: Johnson
authors.forename: J F
authors.initials: JF
authors.lastname: Dee
authors.forename: D L
authors.initials: DL
authors.lastname: Piermattei
mesh_terms: D000818:Animals; D001863:Bone Screws / Q000662:veterinary; D002348:Carpal Bones / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery; D004285:Dogs / Q000293:injuries* / Q000601:surgery; D005260:Female; D005593:Fracture Fixation, Internal / Q000662:veterinary*; D008297:Male; D011859:Radiography; D012189:Retrospective Studies