Inclusion Criteria:  Usual painful episode of 3 months or more Morning stiffness of 15 minutes or more Pain equal to or greater than 5 on the VAS Grade 2 or greater on the Kellgren-Lawrence scale  Exclusion Criteria:  Corticosteroid infiltration in the 3 months prior to recruitment Rehabilitation treatment one month prior to recruitment With a knee prosthesis Needle phobia Pregnancy With pacemakers Cardiac arrhythmias