Intra-Articular Agents Intra-Articular Agents AMO Vitrax Amvisc Amvisc Plus Euflexxa Healon Healon GV Healon5 Hyalgan hyaluronan hyaluronic acid and derivatives hylan G-F 20 Monovisc Nuflexxa Orthovisc sodium hyaluronate Supartz Synvisc Synvisc-One Pain Relief Massage and Relaxation Exercise Equipment Orthopedic products