Comparison of computer-assisted surgery with conventional technique for the treatment of axial distal phalanx fractures in horses: an in vitro study.
OBJECTIVE
To compare the precision obtained with computer-assisted screw insertion for treatment of mid-sagittal articular fractures of the distal phalanx (P3) with results achieved with a conventional technique.


METHODS
In vitro experimental study.


METHODS
Thirty-two cadaveric equine limbs.


METHODS
Four groups of 8 limbs were studied. Either 1 or 2 screws were inserted perpendicular to an imaginary axial fracture of P3 using computer-assisted surgery (CAS) or conventional technique. Screw insertion time, predetermined screw length, inserted screw length, fit of the screw, and errors in placement were recorded.


RESULTS
CAS technique took 15-20 minutes longer but resulted in greater precision of screw length and placement compared with the conventional technique.


CONCLUSIONS
Improved precision in screw insertion with CAS makes insertion of 2 screws possible for repair of mid-sagittal P3 fractures.


CONCLUSIONS
CAS although expensive improves precision in screw insertion into P3 and consequently should yield improved clinical outcome.
Andritzky
Juliane
J
Equine Hospital, Vetsuisse Faculty, University of Zurich, Switzerland.
Rossol
Melanie
M
Lischer
Christoph
C
Auer
Joerg A
JA
D000818:Animals; D001863:Bone Screws / Q000662:veterinary; D002102:Cadaver; D005552:Forelimb / Q000293:injuries / Q000601:surgery*; D005592:Fracture Fixation / Q000662:veterinary; D050723:Fractures, Bone / Q000601:surgery / Q000662:veterinary*; D006736:Horses / Q000293:injuries / Q000601:surgery*; D025321:Surgery, Computer-Assisted; D016896:Treatment Outcome