Procedure Negotiated To Be Started Pursuant To Art. 50 Legislative Decree No. 36/2023 And S.M.I., For The Purchase Of N.10 Elisa-Prowet Kit "The Role Of The Irisina In The Treatment Of Knee Osteoarthritis; Multicenter, Randomized, Perspective Study, In Single Blind On The Evaluation Of The Effect Of The Electro-Myo-Stimulation Wole-Body In Addition To Aerobic Physical Activity" (Irisoa-Wb-Ems Code, Pnrr -Mad-2022-12376898) Cup Master F83C22002480001 -Cup Derivative B93C22000001-Chary Accounting Pnrr-2022-Osteoarthritis To Be Carried Out At The U.O.C. Orthopedics And Traumatology.