title: Kirschner wire fixations for scapholunate dissociation: a cadaveric, biomechanical study.
abstract: OBJECTIVE
  To compare 5 different Kirschner wire fixation techniques in terms of the failure loads seen as scapholunate (SL) dissociation in a cadaveric, biomechanical study.
  
  
  METHODS
  10 fresh-frozen, finger-amputated wrists with sectioned SL ligaments from 3 male and 2 female cadavers were tested. The change of SL angle, SL dissociation, and the load to failure of the 5 different Kirschner wire fixation techniques (using 1.4-mm Kirschner wires) were compared using an axial loading testing machine. The techniques were: (1) SL fixation (using one wire), (2) SL fixation (using 2 wires), (3) SL and scaphocapitate (SC) fixation, (4) SL, SC, and capitolunate (CL) fixation, and (5) CL fixation alone.
  
  
  RESULTS
  There was no significant difference between SL fixations using one or 2 wires. The force for SL dissociation was significantly greater in the SL-SC fixation than the SL fixation using one wire (p=0.003). The SL-SC-CL fixation was not significantly stronger than the SL-SC fixation.
  
  
  CONCLUSIONS
  The SL-SC fixation achieved adequate stabilisation of both carpal rows with minimal biological impairment.
authors.affiliation: Department of Trauma, Hand, Plastic and Reconstructive Surgery, Julius Maximilian University Wuerzburg, Wuerzburg, Germany. jakubietz_m@klinik.uni-wuerzburg.de
authors.forename: Michael G
authors.initials: MG
authors.lastname: Jakubietz
authors.forename: Robert
authors.initials: R
authors.lastname: Zahn
authors.forename: Joerg G
authors.initials: JG
authors.lastname: Gruenert
authors.forename: Jens
authors.initials: J
authors.lastname: Waschke
authors.forename: Rainer H
authors.initials: RH
authors.lastname: Meffert
authors.forename: Rafael G
authors.initials: RG
authors.lastname: Jakubietz
mesh_terms: D001696:Biomechanical Phenomena; D001864:Bone Wires; D002102:Cadaver; D005260:Female; D006801:Humans; D012667:Lunate Bone / Q000293:injuries* / Q000601:surgery*; D008297:Male; D019637:Orthopedic Procedures / Q000295:instrumentation / Q000379:methods; D021361:Scaphoid Bone / Q000293:injuries* / Q000601:surgery*; D014954:Wrist Injuries / Q000601:surgery*