RecruitingDrug trialEvaluation of Intra-articular CX-011 to Treat Moderate to Severe Pain From Knee OsteoarthritisStudy is designed to evaluate the safety and effectiveness of a drug called CX-011 to treat pain in patients with osteoarthritis of the knee. Osteoarthritis produces pain in the knee (and other joints) that typically is worsened by activities such as long distance walking and is alleviated by rest.