ZILRETTA

Synovial volume (mm\^3) as measured by MRI and read by a central imaging vendor. Standardization was performed by dividing the model-derived least squares means and corresponding confidence intervals by the adjusted standard deviation (SD). Therefore, the mean standardized change represents the change in synovial volume expressed in standard deviation units.

Analyses of adverse events (AE) were performed for events considered treatment-emergent (TE) in patients who received two doses of 32 mg FX006. TE was defined as any AE with onset after administration of the 1st dose of study drug or any event present at baseline but worsened in intensity through the study. Severity was graded by the PI using the Common Terminology Criteria for AEs Version 4.0. Grading went from Grade 1 (Mild) to Grade 5 (Death Related to AE).

The pain intensity score is measured using an 11-point numeric rating scale (NRS), where ) indicates "no pain" and 10 indicates "pain as bad as you can imagine."

Numeric Pain Rating Scale total score ranges from 0 (no pain) to 10 (most intense pain imaginable).

Successful study drug administration, defined as Injector reporting complete study drug administration.

Characterize the Pharmacokinetic Profile of FX006 and TCA IR \[Time Frame: Day 1 (pre-treatment,1, 2, 3, 4, 5, 6, 8,10, and 12 hrs. post-dose) and Days 2, 3, 5, 8, 15, 22, 29, 57,and 85\] For the PK analysis and individual concentration vs. time plots, a concentration that is BLOQ is assigned a value of zero if it occurs in a profile before the first measurable concentration. If a BLOQ value occurs after a measurable concentration in a profile and is followed by a value above the lower limit of quantification, then the BLOQ is treated as missing data. If a BLOQ value occurs at the end of the collection interval (after the last quantifiable concentration) it is set to zero. If two BLOQ values occur in succession after Cmax, the profile is deemed to have terminated at the first BLOQ value and any subsequent concentrations are set to zero for PK calculations

Analyses of adverse events (AE) were performed for events considered treatment-emergent (TE). TE was defined as any AE with onset after administration of the 1st dose of study drug or any event present at baseline but worsened in intensity through the study. Severity was graded by the PI using the Common Terminology Criteria for AEs Version 4.0. Grading went from Grade 1 (Mild) to Grade 5 (Death Related to AE).

Plasma drug concentrations (pg/mL) by Time Point across FX006 and TAcs treatment arms in plasma. For the PK analysis and individual concentration vs. time plots, a concentration that is BLOQ is assigned a value of zero if it occurs in a profile before the first measurable concentration. If a BLOQ value occurs after a measurable concentration in a profile and is followed by a value above the lower limit of quantification, then the BLOQ is treated as missing data. If a BLOQ value occurs at the end of the collection interval (after the last quantifiable concentration) it is set to zero. If two BLOQ values occur in succession after Cmax, the profile is deemed to have terminated at the first BLOQ value and any subsequent concentrations are set to zero for PK calculations

Safety analyses were conducted using the safety population. Analyses of adverse events will be performed for those events that are considered treatment emergent, where treatment emergent is defined as any adverse event with onset after the administration of study medication in the first knee through the end of the study or any event that was present at baseline but worsened in intensity through the end of the study. Severity of Adverse events were graded by the Principal Investigator using the Common Terminology Criteria for Adverse Events (CTCAE) version 4.0. The grading went from Grade 1 (Mild) to Grade 5 (Death related to AE).

Average blood glucose was analyzed with a mixed model for repeated measures (MMRM)

All baseline (pre-treatment) values and all post-baseline values recorded as below LLOQ (\<50 pg/mL) were set to zero. Geometric mean summary statistics were computed on adjusted concentration values. One (1) was added to each concentration value observed. BLQ values for the computation of geometric mean are included in the summary with a value of 1 (0+1).

The pain intensity score is measured using an 11-point numeric rating scale (NRS), where 0 indicates "no pain"and 10 indicates "pain as bad as you can imagine."

Analyses of synovial fluid drug concentrations were performed using the Synovial Fluid Drug Concentration Population. Values recorded as lower limit of quantification (LLOQ) (\< 50 pg/mL) were counted as half the value below limit of quantification (BLQ).

The primary pharmacodynamic endpoint was change from baseline (pre-dose) to Day 1-2, Day 14-15 (Week 2) and Day 42-43 (Week 6) in 24-hour weighted mean serum cortisol. This is defined as AUC over the 0-24 hour measurement period divided by 24

Concentrations below the limit of quantification of 50 pg/mL were treated as 0.

The pain intensity score is measured using an 11-point numeric rating scale (NRS), where 0 indicates "no pain" and 10 indicates "pain as bad as you can imagine."

The pain intensity score is measured using an 11-point numeric rating scale (NRS), where 0 indicates "no pain" and 10 indicates "pain as bad as you can imagine."

The pain intensity score is measured using an 11-point numeric rating scale (NRS), where 0 indicates "no pain" and 10 indicates "pain as bad as you can imagine."