Morphometric evaluation of nerve fibers after surgical repair by allograft and tubular prothesis of the ulnar nerve in dogs

Authors

  • Ângelo João Stopiglia Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Cirurgia, São Paulo, SP
  • Raquel Dias Lainetti Universidade de São Paulo, Instituto de Ciências Biomédicas, São Paulo, SP
  • Raquel Siimoni Pires Universidade de São Paulo, Instituto de Psicologia, São Paulo, SP
  • Ciro Ferreira Da-Silva Universidade de São Paulo, Instituto de Ciências Biomédicas, São Paulo, SP

DOI:

https://doi.org/10.1590/S1413-95961998000200006

Keywords:

Morphometry, Peripheral nerves, Neurosurgery, Dogs

Abstract

The purpose of this study was to evaluate, by morphometric analysis, the regenerated nerve fibers of dogs, after 26 weeks of observation, in gaps of the ulnar nerves substituted by allografts and tubular prosthesis of silicone. The ulnar nerves of four dogs were processed for electron microscopic evaluation. Six fields, with 1750 µm², for each dog and each procedure, were photographed at 1880x. A morphometric computer based analysis (Sigma Scan - Jandel Co., USA) resulted in the following numbers (average numbers in micrometers). 1. ulnar nerve with tubular prosthesis- a: myelinated fiber diameter-5.12 ± 1.67. b: myelinated axon diameter: 4.08 ± 1.52. c: myelin sheath thickness-0.52 ± 0.18. d: unmyelinated axon diameter: 0.98 ± 0.37. 2. ulnar nerve with allograft- a: myelinated fiber diameter: 6.04 ± 2.27. b: myelinated axon diameter: 4.59 ± 1.95. c: myelin sheath thickness: 0.72 ± 0.23. d: unmyelinated axon diameter: 0.96 ± 0.40. The morphometric analysis after 26 weeks of nerve repair didn’t show a significant difference between the two surgical procedures.

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Published

1998-01-01

Issue

Section

VETERINARY MEDICINE

How to Cite

1.
Stopiglia Ângelo J, Lainetti RD, Pires RS, Da-Silva CF. Morphometric evaluation of nerve fibers after surgical repair by allograft and tubular prothesis of the ulnar nerve in dogs. Braz. J. Vet. Res. Anim. Sci. [Internet]. 1998 Jan. 1 [cited 2024 Jul. 22];35(2):80-3. Available from: https://www.revistas.usp.br/bjvras/article/view/5717