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Open Access Research article

Meniscal mineralisation in little spotted cats

Sheila C Rahal1*, Mauricio G Fillipi1, Maria J Mamprim2, Hugo S Oliveira2, Carlos R Teixeira1, Rodrigo HF Teixeira3 and Frederico OB Monteiro4

Author Affiliations

1 Department of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science - Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil

2 Department of Radiology and Animal Reproduction, School of Veterinary Medicine and Animal Science - UNESP, Botucatu, SP, Brazil

3 Quinzinho de Barros Municipal Zoo, Sorocaba, SP, Brazil

4 Universidade Federal Rural da Amazônia, Instituto de Saúde e Produção Animal, Belém do Pará, Brazil

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BMC Veterinary Research 2013, 9:50  doi:10.1186/1746-6148-9-50

Published: 18 March 2013

Abstract

Background

The aim of this study was to evaluate the stifle joints of little spotted cats in captivity using radiographic and CT studies. The hypothesis was that these animals would have meniscal mineralisation that could be detectable by imaging studies. Twelve intact little spotted cats (Leopardus tigrinus), 2 females and 10 males, aged from 1.5 to 11.11 years old and weighing 1.9–3.05 kg were studied. These animals, which were living in the Quinzinho de Barros Municipal Zoo, had no symptoms or known disease processes at the time of the study. The plain radiographs and computed tomography (CT) scans of both stifle joints were performed under general anaesthesia. Sequential transverse images were acquired on a spiral scanner.

Results

No signs of articular disease were observed in any of the animals. Radiographically, the meniscal mineralisation was detected as an oval radiopacity in the cranial compartment on the mediolateral projection, located within the area of the medial meniscus. On craniocaudal projection, the mineralisation was more difficult to visualise. In one of the animals, it was not possible to identify the meniscal mineralisation in either of the stifle joints. Using CT, meniscal mineralisation was best identified in the transverse plane images.

Conclusions

Meniscal mineralisation appears to be a normal anatomic feature in little spotted cats.