MUSC Health Orthopaedics & Orthopaedic Surgery

Dr. Voss is a fellowship trained total joint surgeon currently practicing in Charleston, SC at the Medical University of South Carolina. He is originally from Indiana and received his undergraduate degree from Brown University in 1982. He studied Biochemistry as his major and played water polo. In 1986 he completed his medical training at Harvard Medical School. He completed two years of general surgery at the Brigham and Womens' Hospital and then 4 years of orthopaedic surgery residency in the Harvard Combined Orthopaedic Program. A one-year fellowship in joint replacement at Rush Presbyterian in Chicago followed. For the first 29 years of practice, he worked for the USC School of Medicine in Columbia, SC. His practice has focused on hip and knee replacement surgery. He also performs osteotomies around the knee. He and his wife Tracy, an internist, moved their practices to MUSC in the Spring of 2022. Since 2003 he has been involved in coding for the American Academy of Orthopaedic Surgery. He started out as the representative from the American Association of Hip and Knee Surgeons to the AAOS Coding and Reimbursement committee. Since 2016, he has served as the AAOS representative to the AMA Current Procedural Technology committee. There he helps present new codes and helps to define their utilization. He has a wife and 3 children and one grandchild. His avocations are swimming, triathlons, and games.

W. Michael Pullen, M.D. is a board-certified, fellowship trained orthopaedic surgeon with a clinical focus in sports medicine. Dr. Pullen is an assistant professor of orthopaedic surgery and sports medicine at the Medical University of South Carolina. Prior to joining MUSC, Dr. Pullen served as an orthopaedic surgeon and Lieutenant Commander in the United Stated Navy. Dr. Pullen received his undergraduate degree from Christopher Newport University and his medical degree from Eastern Virginia Medical School in Norfolk, VA. He then went on to complete his orthopaedic residency training at Naval Medical Center Portsmouth. Following his residency training, he served as a staff orthopaedic surgeon in Yokosuka Japan as senior medical officer for the Department of Orthopedics. Following this, he was recruited to re-join the faculty at Naval Medical Center Portsmouth as a sports surgeon at the tertiary referral center and surgeon-training program. While there, he served as the assistant residency director and helped care for the east coast Naval Special Warfare (SEAL) team. Dr. Pullen also served as the sole orthopaedic surgeon on a 6-month humanitarian deployment on the USNS Comfort (Hospital Ship) in support of Operation Enduring Promise. There, he provided orthopaedic care in 14 countries in Central and South America. Finally, he completed his fellowship training in Sports Medicine and Arthroscopy at Stanford University. Dr. Pullen has helped in the care of athletes of all levels, including high school, amateur, collegiate, professional, and Olympic athletes. Dr. Pullen is currently a member of several professional organizations including the American Academy of Orthopedic Surgeons (AAOS), American Orthopedic Society of Sports Medicine (AOSSM), the Arthroscopy Association of North America (AANA), the Society of Military Orthopedic Surgeons (SOMOS), and the Alpha Omega Alpha (AOA) medical honor society. He has authored numerous peer-reviewed articles and textbook chapters, presenting his research at local, national, and international meetings. His academic interests are in resident education and his research has focused on knee instability (ACL injury) and hip impingement. Dr. Pullen specializes in the advanced arthroscopic (minimally invasive) and open treatment of conditions of the shoulder, knee, and hip. He has considerable experience in shoulder instability, rotator cuff disorders, biceps disorders, meniscus injuries, cartilage injuries and restoration, knee ligament injuries including anterior cruciate ligament (ACL) injuries, femoroacetabular impingement (FAI or hip impingement), and hip labral tears.

Brent A. Ponce, MD, is Professor and Vice Chair of Faculty Development in the MUSC Department of Orthopaedic Surgery and PM\&R. He is from Cincinnati, Ohio and graduated summa cum laude from the University of Cincinnati. He attended Vanderbilt University School of Medicine on an Air Force scholarship and completed a surgical internship at Wright State University \& Wright Patterson Air Force Base. After serving as a flight surgeon in Columbus, Mississippi, he went to Boston, MA for orthopaedic surgery residency at the Harvard Combined Orthopaedic Residency Program. He completed his shoulder fellowship at Harvard at the Massachusetts General Hospital and Brigham \& Women's Hospitals under the mentorship of Drs. JP Warner and Peter Millett. He fulfilled his military commitment at the Air Force Academy where he also served as the team physician for the men's basketball program and was deployed to Iraq as part of OEF/OIF. In 2006, Dr. Ponce joined the faculty at the University of Alabama at Birmingham where he rose to Professor and Vice Chair of Clinical Affairs and Director of the Orthopaedic Skills Lab. In 2021, he joined the Hughston Clinic where he was Chair of Research for the Hughston Foundation. In October 2025, he joined the MUSC Shoulder and Elbow Service. Dr. Ponce currently serves as the Chair of AO Sports helping to educate surgeons all over the world. He is also the founder of the Collaborative of Orthopaedic Educational Research Group (COERG), a large multi-center collaborative focusing on resident education and faculty development research. Academically, Dr. Ponce has published \~200 peer-reviewed articles. Dr. Ponce is a member of several orthopaedic societies including the: American Academy of Orthopaedic Surgeons, American Orthopaedic Association, and American Shoulder and Elbow Society. Dr. Ponce specializes in all conditions involving the shoulder including: fractures, arthritis/replacements, rotator cuff tears, and shoulder dislocations.

Dr. Thomas Moran is a fellowship-trained orthopaedic surgeon specializing in sports medicine and minimally invasive procedures to restore joint function. He has extensive experience treating athletes and active individuals with knee, shoulder, hip, and elbow injuries, including ACL tears and ligamentous knee injuries, meniscus tears, cartilage damage, shoulder instability, rotator cuff injuries, and shoulder arthritis. Dr. Moran is originally from the Shenandoah Valley of Virginia, where he grew up on a family farm. He earned his medical degree from the University of Virginia School of Medicine, where he also completed his orthopaedic surgery residency. During residency, he assisted in taking care of the University of Virginia men's and women's athletes. He then pursued advanced fellowship training in sports medicine and shoulder surgery at Midwest Orthopaedics at Rush in Chicago, IL, where he served as an assistant team physician for the Chicago White Sox (MLB) and Chicago Bulls (NBA). In addition to his clinical expertise, Dr. Moran is dedicated to research and education, with an extensive number of publications on knee ligament reconstruction, shoulder injuries, and joint preservation techniques. He has served as a team physician for high school, collegiate, and professional sports teams, ensuring athletes receive top-tier care from injury through recovery. Dr. Moran believes in a personalized approach to patient care, helping individuals regain mobility and return to the activities they love. Whether you're an elite athlete or someone looking to stay active, he is committed to providing innovative and evidence-based treatments tailored to your needs.

Dr. Harry Demos received his BS in computer science with an emphasis in bioengineering from Clemson University and his M.D. from the Medical University of South Carolina. He completed an orthopaedic research fellowship at Boston City Hospital and his internship at Boston University before pursuing an orthopaedic trauma fellowship in Birmingham, Alabama. He then returned to the Medical University of South Carolina to complete his orthopaedic surgery residency. Dr. Demos completed his fellowship in adult reconstruction at the University of Western Ontario Medical Center in London, Ontario.Dr. Demos is a board-certified orthopaedic surgeon who specializes in joint replacement surgery. He joined the faculty in the Department of Orthopaedic Surgery at the Medical University of South Carolina in 2001 and currently represents the department in multiple areas throughout MUSC Health, including his appointments to the health information services committee and EMR advisory board. Dr. Demos also serves as the medical director of the MUSC inpatient adult orthopaedic wards, 2 East and 7 West.

Dr. Nicholas Arpey is an orthopaedic surgeon who specializes in orthopaedic oncology and joint replacement surgery. His areas of interest include the treatment of bone and soft tissue tumors in children and adults, metastatic bone disease, total and revision hip arthroplasty, partial, total, and revision knee arthroplasty, and robotic-assisted surgery. He earned his medical degree from the University of Iowa before finishing his residency in orthopaedic surgery at Northwestern University. He then completed fellowship training in orthopaedic oncology at the University of Florida followed by adult reconstructive hip and knee surgery at Colorado Joint Replacement.

Dr. Alexei DeCastro completed his family medicine residency training at McLeod Health in Florence, South Carolina in 2005. He then served in the United States Air Force in both primary care and aerospace medicine at Barksdale AFB in Shreveport, Louisiana from 2005 to 2009. Dr. DeCastro deployed to Iraq in 2008 and served as the chief physician of the intermediate care ward in the busiest trauma center of the region. He still currently serves as a flight surgeon in the USAF Reserve at Joint Base Charleston. Additionally, he completed a sports medicine fellowship at the Southern Illinois School of Medicine in 2009. He then returned to Charleston, SC with his family and worked in urgent care prior to joining MUSC in 2012. Dr. DeCastro has extensive training in the non-operative management of musculoskeletal problems, from acute injury through rehabilitation, and is trained in the use of musculoskeletal ultrasound for diagnostic and treatment purposes. His main areas of interest are sports medicine, sports-related concussions, musculoskeletal ultrasound, and medical education. He also serves as team physician for the Charleston Battery, Charleston RiverDogs, College of Charleston athletics, SC Stingrays, and tournament physician for professional tennis with the WTA at the Volvo Car Open.