Dr. Erik N. Zeegen is a board-certified orthopaedic surgeon who specializes in joint replacement surgery and has extensive experience in anterior hip replacement surgery, less invasive knee replacement surgery, robotic-assisted knee replacement surgery, and complex revision surgery of hip and knee replacements that have failed. Dr. Zeegen is the Chief of Joint Replacement Surgery at UCLA. A native of Southern California, Dr. Zeegen attended the University of California at Berkeley and at Los Angeles as an undergraduate. Dr. Zeegen earned his Doctor of Medicine from UCLA in 1996. He also completed his general surgery internship and orthopaedic surgery residency at UCLA. Dr. Zeegen moved to Boston in 2001 and completed a fellowship in Orthopaedic Surgical Oncology at Massachusetts General Hospital and Boston Children's Hospital. He then completed a fellowship in Adult Reconstructive Surgery at Boston's New England Baptist Hospital from 2002-2003 before returning to Los Angeles in late 2003. From 2003 – 2005, Dr. Zeegen was an Assistant Professor of Orthopaedic Surgery at UCLA, and then was the Associate Medical Director of the Valley Hip & Knee Institute in Tarzana, CA until recently being named Chief of Joint Replacement Surgery at UCLA.