The lubrication and stiffness of joints.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D001696:Biomechanical Phenomena; D002358:Cartilage, Articular / Q000502:physiology*; D002648:Child; D002675:Child, Preschool; D004548:Elasticity; D006801:Humans; D007596:Joints / Q000502:physiology* / Q000503:physiopathology; D007719:Knee Joint; D008153:Lubrication; D008875:Middle Aged; D010003:Osteoarthritis / Q000503:physiopathology; D013314:Stress, Mechanical; D013582:Synovial Fluid; D013696:Temperature; D014783:Viscosity