Disclosed are mixed solutions of PRG4 and hyaluronic acids having controlled, enhanced rheological properties adapted for various particular medical and cosmetic uses. Such solutions combine the solution-based lubrication ability of HA and the boundary-based lubricating effects of lubricin. Being more viscous, the solutions when used for joint viscosupplementation enhance both the duration of the HA within the joint capsule (in vivo half-life) and enhance the cushioning effects of the HA, as well as improve both solution and boundary mode lubrication mechanisms.
