Dr. Richard Katz, a board-certified orthopedic surgeon, is renowned for his contributions to regenerative medicine and medical education. Certified by the American Board of Orthopaedic Surgery, Dr. Katz has an extensive background in adult reconstructive surgery and sports medicine, including procedures like total joint replacements and arthroscopic repairs. Beyond his clinical practice, Dr. Katz is deeply involved in advancing medical education. He has developed NBME-style questions focusing on orthopedics and regenerative therapies, particularly emphasizing the superiority of third-generation autologous chondrocyte implantation (ACI) over microfracture techniques for treating focal chondral defects of the knee . These educational tools are designed to aid future biomedical professionals in self-assessment and application of critical concepts.