Chondromalacia induced by patellar subluxation: morphological and morphometrical aspects in rabbits.

Autor: Sant'Anna MM; Laboratory of Histochemistry, Department of Histology and Embryology, Biomedical Center, Institute of Biology, University of State of Rio de Janeiro, Rio de Janeiro, Brazil. moysa2000@yahoo.com.br, Apfel MI
Jazyk: angličtina
Zdroj: Journal of cellular and molecular medicine [J Cell Mol Med] 2002 Apr-Jun; Vol. 6 (2), pp. 261-70.
DOI: 10.1111/j.1582-4934.2002.tb00193.x
Abstrakt: The purpose of this study was to describe morphologically and quantify the changes of the articular cartilage in chondromalacia, concerning both the chondrocytes and extracellular matrix. Eight rabbits were submitted daily to patellar subluxation, causing chondromalacia after two weeks. The knee fragments obtained were processed by the standard methods. These experimental conditions caused degenerative alterations of the articular cartilage, varying from a slight decrease of proteoglycans, to fibrillations, clefts, and horizontal splitting. The results showed a significantly increase number of chondrocytes (p < 0,000139), although smaller in size (p < 0,000109). The immobilization for 2 weeks and the intermittent passive daily motion afterwards for a period of 2 weeks, was effective to cause patellar chrondomalacia in rabbits.
Databáze: MEDLINE