- Use of intra-articular injections of hyaluronan (e.g. Hyalgan (TM), Synvisc (TM), Orthovisc (TM)) in past 6 months, or injections of glucocorticoids (e.g. Kenalog (TM), Aristospan (TM), Depo-Medrol (TM)) in past 3 months or anticipated knee injections during the study