Computed tomography to identify preoperative guidelines for internal fixation of the distal sesamoid bone in horses: an in vitro study.
Abstract: To assess the reliability of computed tomography (CT) to identify the direction of implant insertion for cortical screws along the longitudinal axis of intact (nonfractured) distal sesamoid bones. Methods: In vitro study. Methods: Cadaveric paired equine forelimbs (n=16). Methods: Insertion of a cortical screw in lag fashion along the longitudinal axis of intact (nonfractured) distal sesamoid bones was evaluated in 2 groups (3.5 and 4.5 mm) of 8 paired limbs. In each group, the direction of the distal sesamoid bone was determined by CT (Equine XTC 3000 pQCT scanner). Screw placement was verified by specimen dissection. Implant direction was considered satisfactory if the entire screw length was within the distal sesamoid bone and not damaging the articular or flexural surfaces. Results: In our sample and according to our criteria, the proportion of satisfactory direction of screws was 0.63 (5/8) for 4.5 mm implants, and 0.87 (7/8) for 3.5 mm implants. Conclusions: CT is a useful imaging modality to identify anatomic landmarks for insertion of a 3.5 mm cortical screw in the distal sesamoid bone.
© Copyright 2010 by The American College of Veterinary Surgeons.
Publication Date: 2010-11-15 PubMed ID: 21077919DOI: 10.1111/j.1532-950X.2010.00749.xGoogle Scholar: Lookup
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- Journal Article
Summary
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The research presents the effectiveness of using computed tomography (CT) scans in determining the best way to insert screw implants into the distal sesamoid bone of horses using cadaveric paired equine forelimbs in an in vitro study.
Objective
The main aim of this research is to evaluate the reliability of computed tomography (CT) in identifying the optimal direction for the insertion of a cortical screw in the distal sesamoid bone of horses. Specifically, the researchers are interested in how well CT can be used to determine the longitudinal axis of this bone in intact (nonfractured) conditions.
Methodology
- The researchers used an in vitro study design, using cadaveric paired equine forelimbs (n=16).
- They assessed the insertion of a cortical screw in lag fashion along the longitudinal axis of intact (nonfractured) distal sesamoid bones.
- The study was divided into two experimental groups, one with larger (4.5 mm) and the other with smaller (3.5 mm) implants. Eight pairs of limbs were tested in each group.
- The direction of the distal sesamoid bone in each sample was determined using a CT scanner.
- The placement of the screws was checked by dissecting the specimen after the CT scan and comparing the results.
- The direction of the screw was considered satisfactory if it was entirely within the distal sesamoid bone without damaging the articular or flexural surfaces.
Results
- The study found that the proportion of the satisfactory direction of screws, following the criteria outlined, was 0.63 (5/8) for the 4.5 mm implants and 0.87 (7/8) for the 3.5 mm implants.
Conclusion
The researchers concluded that computed tomography is a valuable tool for identifying anatomical landmarks helpful for the successful insertion of 3.5 mm cortical screws in the distal sesamoid bones of horses. However, the study also suggests that further research might be necessary due to the less satisfactory results obtained with the larger, 4.5 mm screws.
Cite This Article
APA
Perrin R, Launois T, Brogniez L, Desbrosse FG, Coomer RP, Clegg PD, Reda AA, Gehin SG, Vandeweerd JM.
(2010).
Computed tomography to identify preoperative guidelines for internal fixation of the distal sesamoid bone in horses: an in vitro study.
Vet Surg, 39(8), 1030-1036.
https://doi.org/10.1111/j.1532-950X.2010.00749.x Publication
Researcher Affiliations
- Clinique Equine Desbrosse, St. Lambert-des-Bois, France.
MeSH Terms
- Animals
- Biomechanical Phenomena
- Bone Screws / veterinary
- Forelimb / injuries
- Forelimb / surgery
- Fracture Fixation, Internal / instrumentation
- Fracture Fixation, Internal / methods
- Fracture Fixation, Internal / veterinary
- Fractures, Bone / surgery
- Fractures, Bone / veterinary
- Horse Diseases / surgery
- Horses
- Internal Fixators / veterinary
- Practice Guidelines as Topic
- Sesamoid Bones / injuries
- Sesamoid Bones / surgery
- Tomography, X-Ray Computed / veterinary
- Treatment Outcome
Citations
This article has been cited 2 times.- de Preux M, Precht C, Travaglini AT, Propadalo LM, Farra D, Vidondo B, Easley JT, Koch C. Influence of the Vertek aiming device on the surgical accuracy of computer-assisted drilling of the equine distal sesamoid bone-An experimental cadaveric study. Vet Surg 2025 Jan;54(1):118-128.
- Pudert T, Fries GF, Lotz H, Röcken M, Cruz AM. Use of a new aiming compression device and technique for the repair of navicular bone fractures in horses: A cadaveric study. Vet Surg 2025 Jan;54(1):98-106.
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