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  • Title: Computer-assisted surgery for screw insertion into the distal sesamoid bone in horses: an in vitro study.
    Author: Gygax D, Lischer C, Auer JA.
    Journal: Vet Surg; 2006 Oct; 35(7):626-33. PubMed ID: 17026547.
    Abstract:
    OBJECTIVE: To compare the precision of computer-assisted surgery with a conventional technique (CV) using a special guiding device for screw insertion into the distal sesamoid bone in horses. STUDY DESIGN: In vitro experimental study. SAMPLE POPULATION: Cadaveric forelimb specimens. METHODS: Insertion of a 3.5 mm cortex screw in lag fashion along the longitudinal axis of intact (non-fractured) distal sesamoid bones was evaluated in 2 groups (8 limbs each): CV and computer-assisted surgery (CAS). For CV, the screw was inserted using a special guiding device and fluoroscopy, whereas for CAS, the screw was inserted using computer-assisted navigation. The accuracy of screw placement was verified by radiography, computed tomography, and specimen dissection. RESULTS: Surgical precision was better in CAS compared with CV. CONCLUSION: CAS improves the accuracy of lateromedial screw insertion, in lag fashion, into the distal sesamoid bone. CLINICAL RELEVANCE: The CAS technique should be considered for improved accuracy of screw insertion in fractures of the distal sesamoid bone.
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