Celution Prepared Adipose Derived Regenerative Cells in the Treatment of Osteoarthritis of the Knee

The ACT - OA Knee Clinical Trial is a prospective, randomized, multi-center device trial intended to assess safety and feasibility of intraarticular administration of Celution processed Adipose Derived Regenerative Cells (ADRCs). The study will include 90 patients in up to 15 sites in the United States. Subjects that have chronic knee pain due to idiopathic osteoarthritis of the knee (confirmed clinically and radiologically) will be evaluated for eligibility in this study. Following informed consent and screening evaluations, eligible subjects will undergo pre-operative testing. Subjects will then undergo fat harvest through small volume liposuction under local anesthesia. Lipoaspirate will be processed in the Celution System to isolate and concentrate ADRCs for immediate intraarticular administration. A dose escalation approach has been designed wherein the study is divided into two double-blind, randomized, placebo-controlled parts as follows: Part A: Low Dose (20,000,000 cells): 30 patients OR Placebo: 15 patients Part B: High Dose (40,000,000 cells): 30 patients OR Placebo: 15 patients Subjects randomized to placebo will undergo fat harvest and intraarticular injection of a placebo that has been visually matched to the active test substance. All subjects will undergo imaging studies, clinical evaluations, and laboratory testing prior to and after the procedure; patients will be followed for 48 weeks after intraarticular injections are performed.