A bi-phasic model for artificial replacement

• Autorzy: Bali R. , Shukla A. K. , Sharma S. K.
• Języki publikacji: EN

Abstrakty

EN

Joint replacement is widely used for treatment when joints fail to support loads or normal functions due to some accidental force or diseases. The analytical models for artificial human knee joints introducing the concept of porous implants with bone in growth into the pores, may provide better implantation than using cement or rigid, plastic/metallic materials. The purpose of the present study is to determine theoretically the articular contact mechanics of an artificial knee joint containing biphasic cartilage layers under restricted motion during normal walking. The present work incorporates the effect of a viscoelastic fluid as a lubricant on the parameter related to the lubrication mechanism. It has been observed that the load carrying capacity increases with increasing values of viscoelastic parameters. The effect of an increase in the viscoelastic parameter of the lubricant in similar to that of an increase in concentration of hyaluronic acid molecules in the synovial fluid. This helps in sustaining the greater loads. Further, we also observe that as the slip velocity at the porous boundary increases, load carrying capacity decreases owing to the increased filtration of base fluid into the porous cartilage. Thus, the slip velocities existing at the porous boundary play on important role in the self-adjusting nature of the artificial joint.

Słowa kluczowe

EN

biphasic; viscoelastic fluid; tribology of artificial knee joints

PL

tibologia; dwufazowość

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2009
• Tom: Vol. 14, no 3
• Strony: 633--643
• Opis fizyczny: Bibliogr. 38 poz., wykr.

Twórcy

autor

Bali R.

autor

Shukla A. K.

autor

Sharma S. K.

• Department of Mathematics Harcourt Butler Technological Institute Kanpur-208 002 U.P., INDIA,

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