Locking plate stabilization of a distal radial epiphyseal fracture in a toy breed dog: case report

Autores

  • Antônio Alexandre Ribeiro Vieira
  • Sarah Brasil Vieira
  • Alexandre Brasil Vieira
  • Pecci Ribeiro Vieira Maranhão
  • Richard Ferraz

DOI:

https://doi.org/10.34188/bjaerv9n3-190

Palavras-chave:

dogs, radius, ulna, locking plate, non-union, fracture

Resumo

Distal radial and ulnar fractures are common orthopedic injuries in toy and miniature breed dogs, in which reduced soft-tissue coverage and limited periosteal vascularity predispose to delayed union and non-union even after appropriate surgical stabilization. This case report describes the surgical management and radiographic follow-up of a complete, simple, transverse fracture of the distal third of the left radius and ulna in a three-year-old miniature Pinscher. The fracture was stabilized with a 1.5 mm titanium locking bone plate and four locked screws through a craniomedial approach. Serial radiographic follow-up revealed progressive bone resorption, medullary canal sclerosis, absence of callus formation, and periscrew radiolucent halos, consistent with non-union and implant loosening; adjunctive nandrolone decanoate therapy was administered without a clear radiographic response. Given confirmed non-union and progressive implant loosening, the plate and screws were surgically removed. Radiographic control performed approximately one month after implant removal demonstrated exuberant callus formation and complete bone union, albeit with residual recurvatum deformity of the radial axis. This outcome illustrates that consolidation of distal radial fractures in toy breed dogs depends on the interaction between mechanical stability and local biology, and that spontaneous union may occur after removal of an unstable implant, without necessarily indicating a causal relationship.

Referências

ARON, D. N.; PALMER, R. H. Biomechanics of fracture fixation. In: TOBIAS, K. M.; JOHNSTON, S. A. (Ed.). Veterinary Surgery: Small Animal. St. Louis: Elsevier Saunders, 2012. p. 533-541.

BEALE, B. S. Orthopedic complications. Veterinary Clinics of North America: Small Animal Practice, v. 34, n. 5, p. 1085-1112, 2004.

BRINKER, W. O.; PIERMATTEI, D. L.; FLO, G. L. Handbook of Small Animal Orthopedics and Fracture Repair. 5. ed. St. Louis: Elsevier Health Sciences, 2016.

DE CAMP, C. E. et al. Brinker, Piermattei and Flo's Handbook of Small Animal Orthopedics and Fracture Repair. 5. ed. St. Louis: Saunders, 2016.

FERRAZ, R. E. O.; COSER, G.; BIAGGIO, M. A.; CAMPOS JÚNIOR, E. P.; MAIA JÚNIOR, A.; SANTOS, N. M.; LEITÃO, A. M. F. B.; TEIXEIRA, P. P. M. Thoracic and Cervical Surgical Access via Transoral NOTES: Experimental Trials in Canine Cadaver Models. Brazilian Journal of Animal and Environmental Research, Fortaleza, 2026.

JOHNSON, A. L.; HOULTON, J. E. F.; VANNINI, R. AO Principles of Fracture Management in Small Animals. Davos: AO Publishing, 2005.

JOHNSON, A. L.; KNELLER, S. K.; WEIGEL, R. M. Radial and ulnar fractures in toy breeds of dogs. Journal of the American Animal Hospital Association, v. 25, p. 223-230, 1989.

MÜLLER, M. E. et al. Manual of Internal Fixation: Techniques Recommended by the AO-ASIF Group. 3. ed. Berlin: Springer-Verlag, 1991.

SCHATZKER, J.; TILE, M. The Rationale of Operative Fracture Care. 3. ed. Berlin: Springer-Verlag, 2005.

TOBIAS, K. M.; JOHNSTON, S. A. Veterinary Surgery: Small Animal. 2. ed. St. Louis: Elsevier, 2018.

VOSS, K.; MONTAVON, P. M. Tension band wiring, locking plates and minimally invasive plate osteosynthesis. In: TOBIAS, K. M. (Ed.). Veterinary Orthopedic Surgery. Philadelphia: WB Saunders, 2016. p. 210-225.

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Publicado

2026-08-26

Como Citar

Vieira, A. A. R., Vieira, S. B., Vieira, A. B., Maranhão, P. R. V., & Ferraz, R. (2026). Locking plate stabilization of a distal radial epiphyseal fracture in a toy breed dog: case report. Brazilian Journal of Animal and Environmental Research, 9(3), e88966. https://doi.org/10.34188/bjaerv9n3-190

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