An Study to Evaluate Safety and Tolerability of OA-SYS in Subjects With Moderate to Severe Osteoarthritis of the Knee Joint

This study is being conducted to evaluate the safety and tolerability of OA-SYS in patients with moderate to severe OA of the knee joint.

PURPOSE OF THE STUDY The goal of this clinical trial is to evaluate the safety and tolerability of a treatment called OA-SYS for moderate to severe osteoarthritis (OA) of the knee. Osteoarthritis is a common condition that affects the joints and can cause significant pain and disability, especially in older adults. The study aims to see if OA-SYS is a safe and effective treatment option for people with knee osteoarthritis. STUDY TREATMENT Participants in this study will receive the OA-SYS treatment, which involves the use of adult stem cells (ASCs). The main questions the study aims to answer are: * Is OA-SYS safe and well-tolerated by participants with moderate to severe knee osteoarthritis? * Does OA-SYS help reduce the symptoms and improve the function of the knee joint? Participants will: * Receive the OA-SYS treatment, which includes adult stem cells, administered to the knee joint. * Attend regular clinic visits for check-ups and monitoring. * Report any side effects or changes in their condition throughout the study period. RANDOMIZATION AND BLINDING This is a phase II open-label clinical trial, blinding is not applicable to this study.