U.C.L.A. Rheumatology Pathophysiology of Disease Course Lecture, Second Year Medical School 2005
 
 
 
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Joint Lubrication Mechanics, Synovial Fluids   Page 16
 
 
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Lubrication and force distribution mechanisms are shown.
Animation:Cartilage Lubrication : Lubrication and force distribution mechanisms are shown.
Animation: Cartilage Lubrication : Lubrication and force distribution mechanisms are shown.
Animation: Cartilage Lubrication : Lubrication and force distribution mechanisms are shown.
 
     
Slide 1: "Normal Joint Anatomy Knee Posterior View " 400 x 300 pixels 22kb Viewpoint Model Worked in 3dStudio Max Slide 2: " Normal Joint Anatomy Knee Medial View "400 x 300 pixels 15kb Viewpoint Model Worked in 3dStudio Max
Click Picture or here for larger slides (800 x 600 ) 67kb
          Synovial fluid also accounts for some of the lubrication in the joint. However, under heavy loads the cartilage is compressed, and the water within the aggrecan molecules freely moves. Water movement allows for the distribution of mechanical forces within the cartilage and returns to its previous location, ready for the next impact. Water also makes its way to the surface of the cartilage, in front of the impact site, and then acts as a hydrostatic cushion, both protecting the cartilage and greatly lowering the coefficient of friction. Friction is so low because the cartilage surfaces do no touch.
 
     
Slide 3: "Normal Joint Anatomy Knee Cruciate Ligaments " 400 x 300 pixels 24kb Viewpoint Model Worked in 3dStudio Max Slide 4: "Normal Joint Anatomy Knee Menisci " 400 x 300 pixels 23kb Viewpoint Model Worked in 3dStudio Max
  Click Picture or here for larger slides (800 x 600 ) 59kb Click Picture or here for larger slides (800 x 600 ) 38kb
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