EXPERIMENTAL STUDY OF DEGENERATION OF PATELLAR CARTILAGE CAUSED BY ELONGATION OF PATELLAR LIGAMENT IN RABBITS
- VernacularTitle:兔髌韧带延长引起髌骨软骨变性的实验研究
- Author:
Sheng WANG
- Publication Type:Journal Article
- Keywords:
Chondromalacia patellae, patella alta, articular cartilage.
- From:
Chinese Journal of Sports Medicine
1983;0(03):-
- CountryChina
- Language:Chinese
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Abstract:
Twenty-four rabbits' patellar ligaments were elongated 3 mm surgically, which decreased the pressure of the patellar articular cartilage. The pathological changes of cartilage and subchondral bone of the patellar were examined by light microscope and scanning electron microscope sequentially. 4 weeks after the surgery, proliferation of blood vessels in the subchondral bone and their invasion into the calcafied cartilage were seen, without abnormality in the patellar articular cartilage. After 8 weeks, irregularity of the tide mark and cartilage cells column, and peripheral part of the cartilage showed cluster formation. After 12 weeks, degeneration extended to the superficial layer of the cartilage, producing blister formation, fibrillation and a decrease in the thickness of the cartilage. These findings were similar to the histological changes of chondromalacia patellae. It was further suggested that decrease of pressure on the cartilage could be considered to be one of the causes for articular cartilage injury, and patella alta be correlated with chondromalacia of the patella.
