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Home / Equine Research Bank / Vet Surg / Influence of a purpose-built frame on the accuracy of comput...
Veterinary surgery : VS2020; 49(7); 1367-1377; doi: 10.1111/vsu.13484

Influence of a purpose-built frame on the accuracy of computer-assisted orthopedic surgery of equine extremities.

Abstract: To determine the influence of a purpose-built frame on the accuracy of screw placement during computer-assisted orthopedic surgery (CAOS) of the equine extremity. Methods: Experimental cadaveric study. Methods: Twenty-four paired equine cadaveric limbs obtained from seven horses. Methods: Three 4.5-mm cortex screws were inserted in lag technique in three different planes of orientation in the proximal phalanx (P1) by means of CAOS. In the study group (n = 12 limbs), the tracker was anchored on a purpose-built frame designed to stabilize the extremity. In the control group (n = 12 limbs), a conventional tracker array was used that was anchored directly on P1. The stability of both tracker arrays was assessed during the procedure by using fiducial markers. After screw placement, preoperative and postoperative computed tomographic images were assessed to measure surgical accuracy aberrations (SAA) between the planned and achieved screw position. Descriptive statistics and repeated-measures analysis of variance were performed to compare SAA measurements between the study and control group. Results: Both tracker arrays remained consistently stable in all specimens. Mean overall SAA of screw insertion were lower in the study group (0.7 mm; median, 0.5; range 0-3.4) than in the control group (1.2 mm; median, 0.9; range, 0-4.2 mm). Conclusions: The mean SAA achieved in cortex screw placement using CAOS lies within the range of approximately 1 mm. The use of a purpose-built frame avoided additional drilling of the target bone and improved surgical accuracy compared with the conventional tracker array. Conclusions: The purpose-built frame described in this report can be used to facilitate CAOS in equine orthopedics without compromising surgical accuracy.
© 2020 The American College of Veterinary Surgeons.
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Publication Date: 2020-07-11 PubMed ID: 32652599DOI: 10.1111/vsu.13484Google Scholar: Lookup
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article presents a study on the impact of a specially made frame during computer-assisted orthopedic surgery on horse limbs, concluding that this frame improves surgical precision without compromising on the accuracy of the procedure.

Objective of the Study

  • The study seeks to investigate the effect of a purpose-made frame on the accuracy of screw placement during Computer-Assisted Orthopedic Surgery (CAOS) on horse extremities.

Methodology of the Study

  • The research uses 24 pairs of horse cadaver limbs obtained from seven horses as its subjects.
  • Three 4.5-mm cortex screws are inserted into the proximal phalanx (P1) in three different planes of orientation using CAOS.
  • In the study group of 12 limbs, a tracker (a device used for locating and measuring pertinent information during surgery) is anchored to the specially designed frame meant to stabilize the extremity. Conversely, in the control group of 12 limbs, a conventional tracker array directly anchored to P1 is used.
  • The stability of both tracker arrays is assessed during the surgery using fiducial markers.
  • After placing the screw, the pre-surgical and post-surgical computed tomographic images are compared and assessed to measure any surgical accuracy aberration (SAA) between the planned and actual placements of the screw.
  • A statistical analysis using both descriptive statistics and repeated-measures analysis of variance is conducted comparing SAA measurements between the study and control groups.

Findings of the Study

  • The study found that all tracker arrays were consistently stable in the employed specimens.
  • The mean overall SAA of screw insertion was lower in the study group (0.7 mm; median, 0.5; range 0-3.4) than in the control group (1.2 mm; median, 0.9; range, 0-4.2 mm), concluding that the use of the custom-made frame improved surgical accuracy compared to the conventional tracker array.

Conclusion of the Study

  • The purpose-built frame as described in the report can be employed in equine orthopedics to facilitate CAOS. The study concludes that this frame does not compromise surgical accuracy and moreover, it enhances surgical precision while avoiding additional drilling into the target bone.+

Cite This Article

APA
de Preux M, Vidondo B, Koch C. (2020). Influence of a purpose-built frame on the accuracy of computer-assisted orthopedic surgery of equine extremities. Vet Surg, 49(7), 1367-1377. https://doi.org/10.1111/vsu.13484

Publication

Veterinary surgery : VS
ISSN: 1532-950X
NlmUniqueID: 8113214
Country: United States
Language: English
Volume: 49
Issue: 7
Pages: 1367-1377

Researcher Affiliations

de Preux, Mathieu
  • Swiss Institute of Equine Medicine, Vetsuisse-Faculty, University of Bern, Bern, Switzerland.
  • Agroscope, Avenches, Switzerland.
Vidondo, Beatriz
  • Swiss Institute for Veterinary Public Health, Vetsuisse-Faculty, University of Bern, Bern, Switzerland.
Koch, Christoph
  • Swiss Institute of Equine Medicine, Vetsuisse-Faculty, University of Bern, Bern, Switzerland.
  • Agroscope, Avenches, Switzerland.

MeSH Terms

  • Animals
  • Bone Screws / veterinary
  • Cadaver
  • Forelimb / surgery
  • Hindlimb / surgery
  • Horses / surgery
  • Orthopedic Procedures / instrumentation
  • Orthopedic Procedures / methods
  • Orthopedic Procedures / veterinary
  • Surgery, Computer-Assisted / instrumentation
  • Surgery, Computer-Assisted / methods
  • Surgery, Computer-Assisted / veterinary

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Citations

This article has been cited 5 times.
  1. Klopfenstein Bregger MD, de Preux M, Brünisholz HP, Van der Vekens E, Schweizer D, Koch C. Cheek tooth repulsion aided by computer-assisted surgery in 16 equids. Front Vet Sci 2025;12:1571539.
    doi: 10.3389/fvets.2025.1571539pubmed: 41133193google scholar: lookup
  2. Käfer-Karrer MJ, de Preux M, Van der Vekens E, Mattei LI, Kuhlmann J, Klopfenstein Bregger MD, Easley JT, Koch C. Internal fixation of a fractured cranial articular process of the sixth cervical vertebra by means of computer-assisted surgery in a Warmblood gelding. Vet Surg 2025 Jul;54(5):920-929.
    doi: 10.1111/vsu.14273pubmed: 40406914google scholar: lookup
  3. Maurer T, de Preux M, Precht C, Vidondo B, Koch C. Accuracy of computer-assisted drilling of equine cervical vertebral bodies using a purpose-built cervical frame-An experimental cadaveric study. Vet Surg 2025 Jul;54(5):898-908.
    doi: 10.1111/vsu.14271pubmed: 40371965google scholar: lookup
  4. Wolf ND, Kleiner L, Precht C, Guevar J, de Preux M, Forterre F, Duever P. Minimally invasive computer-assisted repair of feline sacroiliac luxation-a cadaveric study. Front Vet Sci 2025;12:1528345.
    doi: 10.3389/fvets.2025.1528345pubmed: 40084166google scholar: lookup
  5. 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.
    doi: 10.1111/vsu.14176pubmed: 39445680google scholar: lookup
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