Intervertebral disc herniation in two coatis (Nasua nasua) and postoperative laminectomy membrane formation

Nina Meyerhoff; Michael Fehr; Jasmin Neßler; Alexandra Friederike Schütter; Peter Dziallas; Viktor Molnár; Carsten Ludwig; Sarah Zabke; Annika Lehmbecker; Andrea Tipold

doi:10.15654/TPK-180165

Tierärztliche Praxis Ausgabe K: Kleintiere / Heimtiere, Table of Contents

Tierarztl Prax Ausg K Kleintiere Heimtiere 2018; 46(05): 330-336
DOI: 10.15654/TPK-180165

Kasuistiken – Case Report

Georg Thieme Verlag KG Stuttgart · New York

Intervertebral disc herniation in two coatis (Nasua nasua) and postoperative laminectomy membrane formation

Bandscheibenvorfälle bei zwei Nasenbären (Nasua nasua) und postoperative Bildung einer Laminektomiemembran

Nina Meyerhoff

¹Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover

,

Michael Fehr

¹Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover

,

Jasmin Neßler

¹Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover

,

Alexandra Friederike Schütter

¹Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover

²Animal Health Trust, Newmarket, United Kingdom

,

Peter Dziallas

¹Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover

,

Viktor Molnár

³Hannover Adventure Zoo, Hannover

,

Carsten Ludwig

⁴Westfälischer Zoologischer Garten Münster GmbH, Münster

,

Sarah Zabke

⁵Department of Pathology, University of Veterinary Medicine Hannover, Hannover

,

Annika Lehmbecker

⁵Department of Pathology, University of Veterinary Medicine Hannover, Hannover

,

Andrea Tipold

¹Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover

› Author Affiliations

Abstract

Summary

Magnetic resonance imaging revealed spinal cord compression due to intervertebral disc herniation of Hansen type I and II in the thoracolumbar vertebral column in two middle-aged coatis (Nasua nasua) with chronic progressive paraparesis. Surgical treatment included hemilaminectomy and partial corpectomy in one and dorsal laminectomy in the other coati. Both coatis recovered well after surgery. One showed unremarkable gait 6 and 15 months post surgery, while the other one suffered from recurrence of paraparesis leading to euthanasia because of deterioration of neurological signs 20 months after the first surgery. Necropsy revealed formation of a laminectomy membrane compressing the spinal cord. Histopathological signs of spinal cord injury and findings of degenerative processes in the intervertebral disc were comparable to those described in dogs. In conclusion, this case report shows for the first time that surgical intervention seems to be a useful and safe treatment in chronic intervertebral disc herniation in coatis, but relapses are possible.

Zusammenfassung

Zwei Nasenbären mittleren Alters wurden aufgrund einer chronisch progressiven Paraparese vorgestellt. Mittels Magnetresonanztomographie ließ sich jeweils eine durch einen thorakolumbalen Bandscheibenvorfall (Hansen Typ I bzw. II) verursachte Rückenmarkskompression nachweisen. Die chirurgische Dekompression erfolgte in einem Fall mittels Hemilaminektomie und einer partiellen Korpektomie, im zweiten Fall durch eine dorsale Laminektomie. Beide Nasenbären hatten eine komplikationslose Genesungsphase. Ein Tier zeigte 6 und 15 Monate nach der Operation ein unauffälliges Gangbild, während das zweite Tier später aufgrund einer erneut auftretenden Paraparese und progressiver klinischer Verschlechterung 20 Monate nach dem ersten operativen Eingriff euthanasiert wurde. Bei der pathologischen Untersuchung wurde Narbengewebe festgestellt, das das Rückenmark komprimierte. Die histopathologischen Befunde eines Rückenmarkstraumas und die degenerativen Bandscheibenveränderungen waren vergleichbar mit Befunden bei Hunden. Erstmals werden hier das klinische Bild und die erfolgreiche Therapie chronischer Bandscheibenvorfälle sowie Bildung kompressiven Narbengewebes als mögliche Komplikation beim Nasenbären beschrieben.

Keywords

Myelopathy - paraparesis - ataxia - hemilaminectomy

Schlüsselwörter

Myelopathie - Paraparese - Ataxie - Hemilaminektomie

Full Text

References

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