Page 14 wear processes wear fluid film lubrication

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Unformatted text preview: AR Fluid Film Lubrication Joint Fluid Metal z Fluid Film Lubrication; ; surfaces separate – no friction and no wear; due to viscosity of fluid (HA conc. and MW), topography of counterfaces, and velocity: TKA? PE Hyaluronic Acid, HA WEAR PROCESSES WEAR Fluid Film Lubrication Joint Fluid Metal z Fluid Film Lubrication; ; determine the patient’s fluid viscosity (HA conc. and MW); benefit of HA injection? Page 15 PE Hyaluronic Acid, HA h [Pa s] 10 May experience fluid film lubrication VISCOSITY OF JOINT FLUID IN PATIENTS AT PRIMARY AND REVISION TKA Viscous 1 Mid-Range 0.1 Inviscid 0.01 0.1 1 After TKA, there is a decrease in viscosity; this may affect the lubrication of TKA. h [Pa s] 10 May experience fluid film lubrication 10 Shear Stress [Pa] D. Mazzucco, et al., J. Orthop. Res. 2002;20:1157 VISCOSITY OF JOINT FLUID IN PATIENTS AT PRIMARY AND REVISION TKA Viscous Supartz 1 Mid-Range 0.1 Inviscid 0.01 0.1 Is there a value in viscosupplementation in the TKA patient? 1 10 Shear Stress [Pa] D. Mazzucco, et al., J. Orthop....
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