Comparison of computer-assisted surgery with conventional technique for the treatment of axial distal phalanx fractures in horses: an in vitro study.
Authors: Andritzky Juliane, Rossol Melanie, Lischer Christoph, Auer Joerg A
Journal: Veterinary surgery : VS
Summary
# Editorial Summary: Computer-Assisted Surgery for Distal Phalanx Fractures Mid-sagittal fractures of the distal phalanx (P3) present a challenging surgical problem in horses, and achieving precise screw placement is critical for optimal healing and return to function. Researchers compared computer-assisted surgery (CAS) with conventional freehand technique for screw insertion in an in vitro study using 32 cadaveric equine limbs, testing both single and dual screw configurations across four treatment groups. Although CAS required 15–20 minutes additional operative time, it demonstrated significantly superior precision in both screw length accuracy and placement geometry, with fewer positioning errors relative to conventional methods. The enhanced precision afforded by CAS made reliable two-screw fixation feasible—a particular advantage for mid-sagittal fractures where increased construct stability could theoretically improve healing outcomes and reduce complications. Whilst acquisition and training costs remain substantial, the technical advantages of computer-assisted guidance warrant consideration for surgeons managing these high-value cases, particularly where anatomical precision is likely to influence prognosis.
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Practical Takeaways
- •CAS enables more accurate placement of multiple screws in P3 fractures, potentially improving surgical outcomes despite longer operative time
- •Two-screw fixation is achievable with CAS guidance but may be compromised with conventional technique due to precision limitations
- •CAS technology may justify its cost through improved clinical results, though clinical validation is still needed
Key Findings
- •Computer-assisted surgery (CAS) took 15-20 minutes longer than conventional technique but achieved greater precision in screw length and placement
- •CAS precision allowed successful insertion of 2 screws for P3 fracture repair, whereas conventional technique showed placement errors
- •CAS reduced screw placement errors and improved fit compared to conventional freehand insertion