Related Experiment Video
Updated: Jul 19, 2026
A Minimally Invasive Model to Analyze Endochondral Fracture Healing in Mice Under Standardized Biomechanical Conditions
Published on: March 22, 2018
Computer-assisted surgery for screw insertion into the distal sesamoid bone in horses: an in vitro study
Diego Gygax1, Christoph Lischer, Joerg A Auer
1Equine Hospital, University of Zürich, Zürich, Switzerland. dgygax@vetclinics.unizh.ch
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.
