...Elizabeth Feeney; Devis Galesso; Cynthia Secchieri; Francesca Oliviero; Roberta Ramonda; Lawrence J. Bonassar Inferior synovial lubrication is a hallmark of osteoarthritis (OA), and synovial fluid (SF) lubrication and composition are variable among OA patients. Hyaluronic acid (HA...

...Jill M. Middendorf; Shaden A. Albahrani; Lawrence J. Bonassar Temporomandibular joint (TMJ) diseases such as osteoarthritis and disc displacement have no permanent treatment options, but lubrication therapies, used in other joints, could be an effective alternative. However, the healthy TMJ...

... boundary conditions will change based on whether the surface is in contact or not, which will affect the interstitial fluid pressurization. This in turn will increase or decrease the load sustained by the fluid phase, with a direct effect on friction, wear, and lubrication. In laboratory experiments...

...Kelly J. Shields; John R. Owen; Jennifer S. Wayne, Ph.D. Characterizing the biomechanical and biotribological properties for articular surfaces in healthy, damaged, and repaired states will both elucidate the understanding of mechanical degradation and lubricating phenomena and enhance...

...John Tichy; Benyebka Bou-Saïd The Phan-Thien and Tanner (PTT) model is one of the most widely used rheological models. It can properly describe the common characteristics of viscoelastic non-Newtonian fluids. There is evidence that synovial fluid in human joints, which also lubricates artificial...

... Walker , P. S. , Dowson , D. , Longfield , M. D. , and Wright , V. , 1968 , “ ‘Boosted Lubrication’ in Synovial Joints by Fluid Entrapment and Enrichment ,” Ann. Rheum. Dis. , 27 , pp. 512 – 560 . McCutchen, C. W., 1980, “Joint Lubrication,” In: Biology of Articular...

.... , 113 , pp. 245 – 258 . Krishnan, R., Kopacz, M., and Ateshian, G. A., “Experimental Verification of the Role of Interstitial Fluid Pressurization in Cartilage Lubrication,” J Orthop Res, In Press. Park , S. , Krishnan , R. , Nicoll , S. B. , and Ateshian , G. A. , 2003...

... biorheology bone hydrostatics creep sliding friction porous materials finite element analysis biomedical ultrasonics mechanical contact lubrication orthopaedics biomechanics Stoltz et al. addresses the over-four-decade controversy in synovial joint tribology as to what...

...Gerard A. Ateshian 27 09 2004 biorheology bone finite element analysis momentum biomechanics lubrication stress analysis friction orthopaedics Dr. Mann’s assertion that experimentally-based results trump those of theory is only as convincing as the validity...

...Donna M. Meyer,, Ph.D.; John A. Tichy,, Ph.D., Professor and Department Chair Formulation of a 3-D lubrication simulation of a total hip replacement in vivo is presented using a finite difference approach. The goal is to determine if hydrodynamic lubrication is taking place, how thick the joint...

...Michael A. Soltz; Ines M. Basalo; Gerard A. Ateshian This study presents an analysis of the contact of a rippled rigid impermeable indenter against a cartilage layer, which represents a first simulation of the contact of rough cartilage surfaces with lubricant entrapment. Cartilage was modeled...

... the micro-pockets. In this way, a poro-elasto-hydrodynamic regime of lubrication is developed. Assuming that lower friction would result in lower adhesive wear, and neglecting the fatigue as well as the abrasive wear, the proposed bearing system hypothetically could reduce the amount of wear debris...

... pressures are required. Here we analyze the mechanical consequences of local longitudinal shortening (LLS) through a mathematical model based on lubrication theory. We find that local pressure and shear stress in the contraction zone are greatly reduced by the existence of LLS. In consequence, peak...