This is a pilot, double-blind, randomised trial that investigates which gait parameters are
more sensitive following a single bolus injection of hyaluronic acid with mannitol,
hyaluronic acid with sorbitol, or saline placebo for knee osteoarthritis. Outcome measures
are gait analysis through a inertial sensors (Physilog), Knee Society Score (KSS), University
of California Los Angeles (UCLA) activity-scale and EuroQol 5Dimensions. Follow-up will be of
4 weeks.