Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 International Journal of Applied Mechanics and Engineering

1 2009

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: tribology of artificial knee joints

Sortuj według:

Ogranicz wyniki do:

A bi-phasic model for artificial replacement

Bali R., Shukla A. K., Sharma S. K.

International Journal of Applied Mechanics and Engineering

2009

Vol. 14, no 3

633-643

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.