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International Journal of Morphology

versión On-line ISSN 0717-9502

Resumen

SILVA, Julio Guilherme et al. Morphological Analyisis of the Fabella in Brazilians. Int. J. Morphol. [online]. 2010, vol.28, n.1, pp.105-110. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022010000100015.

Among the present`s sesamoids in the human body, the fabella can be found in the posterior part of the knee in low incidence. This report is quite controverted in the classic anatomical literature as well as its constitution. Its fixation is on the tendon of the gastrocnemius lateralis, close to its origin, in the posterior part of condilus femuralis lateralis. However, when its occurs, generally induces in the knee the absence of arcuate ligament with the presence of fabellofibular ligament. The prevalence is larger in male individuals. Few studies discuss the histology of the fabella. Some authors suggest that the fabella basically formed by bone tissue and others describe it as a fibrocartilaginous. The aim of this study is to analyze the incidence of the fabella, its histological structure and its association with presence or absence of fabellofibular ligaments through macro and microscopic study. Sixty-two Brazilian´s knees were dissected and the fabella was found in two diferent specimens. The tissue had been removed and fixed in 4% formaldehyde for microscopic evaluation. The fabella is a sesamoid bone that appears on knee in a small frequency in Brazilians. Its presence provokes absence of the arcuate ligament and the presence of the fabellofibular ligament. The histological study demonstrated bone tissues on its constitution without osteoclasts.

Palabras clave : Sesamoid bones; Morphology; Anatomy; Knee joint.

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