1. Quelle est la principale composante de la matrice extracellulaire du cartilage hyalin ?
2. Quelle structure articulaire est principalement impliquée dans l'arthrose ?
3. Quel mécanisme est principalement responsable de la douleur dans l'arthrose ?
Cartilage — composition ?
Chondrocytes, MEC (collagène II, GAG)
Lésion tissulaire — principaux composants?
Cartilage, os, membrane synoviale, disque, muscles.
GAG principaux — rôle ?
Confèrent viscoélasticité et attirent l’eau
Arthrose — caractéristique principale?
Dégénérescence du cartilage, ostéophytes.
Charge mécanique — effet ?
Stimule synthèse, dégrade en surcharge
Inflammation synoviale — impliquée dans?
Arthrite, cytokines pro-inflammatoires.
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