Study of FX006 for the Treatment of Pain in Patients With Osteoarthritis of the Knee

This study was a double-blind, randomized, single dose design. The study was conducted in male and female patients ≥40 years of age with OA of the knee. Approximately 450 patients with OA of the knee were randomized to 1 of 3 treatment groups (1:1:1) and treated with a single IA injection of: * 32 mg FX006, * normal saline (placebo), or * 40 mg TCA IR. Randomization was stratified by weekly mean of the average daily (24-hour) pain intensity (ADP) scores at baseline, with the following classifications: 5 to \<6, 6 to \<7, and ≥7. Each patient was evaluated for a total of 24 weeks following a single IA injection. Following screening, safety and efficacy were evaluated at 7 out-patient visits (Days 1 \[baseline\], Weeks 4, 8, 12, 16, 20, and 24). The study was expected to enroll in approximately 6 months.