A consolidated concept of joint lubrication.

摘要: Animal joints contain two systems which require lubrication: a soft-tissue system, involving the sliding of synovial membrane on itself or other tissues, and cartilage-on-cartilage system. The resistance to motion caused by stretching friction is far greater than that due cartilage rubbing cartilage; in fact, may be primarily responsible for clinical joint stiffness. Lubrication softtissue system depends molecules hyaluronate fluid stick synovium layer keep moving surfaces apart. Cartilage-on-cartilage lubrication, contrast, independent hyaluronic acid. A hyaluronate-free glycoprotein fraction has been isolated from confers buffer solution lubricating advantage equal whole fluid. Removal this deprives any over buffer. The action boundary phenomenon similar synovium. In addition effect, are kept apart squeeze film made up interstitial weeps articular itself. squeeze-film effect probably potentiated undulations surface elasticity cartilage, lower frictional elastohydrodynamic effects.