Comparison of computer-assisted surgery with conventional technique for the treatment of axial distal phalanx fractures in horses: an in vitro study |
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Authors: | Andritzky Juliane Rossol Melanie Lischer Christoph Auer Joerg A |
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Affiliation: | Equine Hospital, Vetsuisse Faculty, University of Zurich, Switzerland. |
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Abstract: | OBJECTIVES: 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. STUDY DESIGN: In vitro experimental study. SAMPLE POPULATION: 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. CONCLUSION: Improved precision in screw insertion with CAS makes insertion of 2 screws possible for repair of mid-sagittal P3 fractures. CLINICAL RELEVANCE: CAS although expensive improves precision in screw insertion into P3 and consequently should yield improved clinical outcome. |
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Keywords: | computer-assisted surgery distal phalanx fracture osteosynthesis screw placement screw length determination. |
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