Dr. Darwin Chen is an Associate Professor of Orthopaedic Surgery at Mount Sinai Hospital, in the Leni and Peter W. May Department of Orthopaedics. He specializes in joint replacement surgery of the hip and knee as well as hip preservation. Dr. Chen received his undergraduate degree with honors from Stanford University. He earned his medical degree from Columbia University College of Physicians and Surgeons. He completed his orthopaedic surgery residency at Mount Sinai Hospital in New York City. At Mount Sinai, he was selected as the administrative chief resident during his final year of residency, an honor bestowed by his mentors and peers. In addition, he received the prestigious Dr. Robert Sieffert Award three times during residency for his outstanding academic achievements and clinical excellence. Dr. Chen completed a fellowship in adult reconstruction/joint replacement at Rush University Medical Center, widely regarded as one of the top adult reconstruction fellowships in the country. At Rush, he trained with the pioneers and leaders of the field, including Drs. Wayne Paprosky, Aaron Rosenberg, Joshua Jacobs, Richard Berger, Craig Della Valle, and Scott Sporer. During his fellowship, Dr. Chen gained extensive experience in minimally invasive surgery as well as complex and revision arthroplasty. Following Rush, Dr. Chen completed further subspecialty training in hip preservation surgery as a part of a unique traveling hip fellowship at top centers in the US and Europe. He trained at Saint John’s Health Center in Los Angeles with Dr. Joel Matta, Washington University in Saint Louis with Dr. John Clohisy, Schulthess Klinik in Zurich, Switzerland with Dr. Michael Leunig, and Inselspital in Bern, Switzerland. Dr. Darwin Chen specializes in hip and knee replacement, minimally invasive surgery, as well as complex and revision arthroplasty. He performs innovative procedures such as partial knee replacement as well as direct anterior hip replacement. In addition, he has a special interest in hip preservation surgery, performing periacetabular osteotomy (PAO), surgical hip dislocation, and hip arthroscopy. Academically, Dr. Chen is part of the core teaching faculty at Mount Sinai, and regularly lectures and teaches at the orthopaedic residency program. He has written numerous peer reviewed journal articles and book chapters. His clinical research interests include the influence of surgical approach (direct anterior vs. mini-posterior) on the outcomes of total hip arthroplasty.