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Veterinary surgery : VS2021; 51(1); 148-156; doi: 10.1111/vsu.13725

Single-cut osteotomy for correction of a complex multiplanar deformity of the radius in a Shetland pony foal.

Abstract: To describe the surgical correction of a multiplanar deformity of the radius in a pony using a single-cut osteotomy. Methods: Case report. Methods: A 9-week-old male Shetland pony foal with a bodyweight of 47 kg. Methods: The foal presented with a complex multiplanar deformity of the right radius. A 3-dimensional model of the bone was created based on computed tomography (CT) imaging. To correct the deformity, the cutting plane for a single-cut osteotomy was calculated following the mathematical approach described by Sangeorzan et al. After osteotomy, the bone was realigned and stabilized with two 4.5 locking compression plates (LCPs). Results: Recovery from surgery was uneventful, and the foal remained comfortable. A CT exam 15 weeks after surgery revealed that diaphyseal deformities improved substantially in procurvatum (from 8° to 1°), varus (from 27° to 0°), and rotation (30° to 5°). The operated radius was 2.1 cm shorter than the left. Eighteen-month follow up confirmed a functionally and cosmetically acceptable outcome. Conclusions: The single-cut osteotomy resulted in the successful correction of a multiplanar equine long-bone deformity with a favorable outcome in a Shetland pony. Conclusions: Single-cut osteotomy is an alternative surgical technique for the correction of complex diaphyseal long-bone equine deformities. Computed tomography data and the possibility of printing 3D models provides a significant advantage for rehearsing the procedure and for evaluating the correction that was achieved.
© 2021 The Authors. Veterinary Surgery published by Wiley Periodicals LLC on behalf of American College of Veterinary Surgeons.
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Publication Date: 2021-10-14 PubMed ID: 34651322DOI: 10.1111/vsu.13725Google Scholar: Lookup
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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 focuses on how a complex bone deformation in a Shetland pony’s radius was surgically corrected using a single-cut osteotomy, a procedure involving the cutting of bone. Utilizing computed tomography (CT) imagery and 3D modelling, this approach yielded successful outcomes, marking this technique as a potentially valuable alternative for handling similar equine long-bone deformities.

Methods and Procedure

  • The study revolves around a case report of a 9-week-old, 47 kg male Shetland pony foal diagnosed with a complex deformation of its right radius.
  • The team created a 3D model of the affected bone using data from CT scans. This model was used to calculate the cutting plane necessary for a single-cut osteotomy, following a mathematical model from prior research.
  • The bone was then realigned and stabilized post-osteotomy using two 4.5 locking compression plates (LCPs).

Results of the Surgery

  • Recovery from surgery was smooth and without complications, and the pony remained comfortable throughout the process.
  • A follow-up CT exam 15 weeks after the surgery revealed noticeable improvements in the bone’s abnormalities. Measurements indicated that the procurvatum (forward curvature) was reduced from 8° to 1°, varus (inward turning) from 27° to 0°, and rotation from 30° to 5°.
  • The only anomaly detected was that the treated radius was 2.1 cm shorter than the left one.
  • An eighteen-month follow-up confirmed a functionally and aesthetically satisfactory outcome.

Conclusions

  • The single-cut osteotomy resulted in a successful correction of the multiplanar long-bone deformity. This method provides a promising alternative approach for managing such complex bone deformities in equines.
  • Utilising CT data and 3D modeling gives significant advantages in this field. It helps in rehearsing the procedure and evaluating the achieved correction, thereby permitting more precise preoperative planning and postoperative assessment.

Cite This Article

APA
Schweinsberg LP, Ehrle A, Schweinsberg U, Meehan L, Noguera Cender A, Lischer CJ. (2021). Single-cut osteotomy for correction of a complex multiplanar deformity of the radius in a Shetland pony foal. Vet Surg, 51(1), 148-156. https://doi.org/10.1111/vsu.13725

Publication

Veterinary surgery : VS
ISSN: 1532-950X
NlmUniqueID: 8113214
Country: United States
Language: English
Volume: 51
Issue: 1
Pages: 148-156

Researcher Affiliations

Schweinsberg, Lorenz P
  • Equine Clinic, Surgery and Radiology, Freie Universität Berlin, Berlin, Germany.
Ehrle, Anna
  • Equine Clinic, Surgery and Radiology, Freie Universität Berlin, Berlin, Germany.
Schweinsberg, Uwe
  • Ingenieurbüro Schweinsberg, Bochum, Germany.
Meehan, Lucy
  • VetCT, St John's Innovation Centre, Cambridge, UK.
Noguera Cender, Andrea
  • Equine Clinic, Surgery and Radiology, Freie Universität Berlin, Berlin, Germany.
Lischer, Christoph J
  • Equine Clinic, Surgery and Radiology, Freie Universität Berlin, Berlin, Germany.

MeSH Terms

  • Animals
  • Diaphyses
  • Horses
  • Male
  • Osteotomy / veterinary
  • Printing, Three-Dimensional
  • Radius / diagnostic imaging
  • Radius / surgery
  • Tomography, X-Ray Computed / veterinary
  • Treatment Outcome

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Citations

This article has been cited 1 times.
  1. Gopalan B. What is the Geometric Rule that Guides Accurate Vertical Orientation of the Single-cut Inclined Osteotomy in a Combined Angulation-rotation Deformity of Long Bone?. Strategies Trauma Limb Reconstr 2025 Jan-Apr;20(1):11-16.
    doi: 10.5005/jp-journals-10080-1638pubmed: 40979928google scholar: lookup
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