Orthopedic Surgery

Orthopedic Surgery Faculty

Adult Reconstruction

Kim J. Chillag, MD Clinical Assistant Professor
SPECIALTY(s)
Orthopedic Surgery
Board Certified
American Board of Orthopaedic Surgery
Residency
University of Kentucky Medical Center
Education
West Virginia University School of Medicine
Fellowship
Joint Implant Surgeons, Inc.; Oklahoma Center for Athletes

 

Kim J. Chillag, MD, received his medical degree from the West Virginia University School of Medicine in Morgantown. He completed his internship at the Charleston Area Medical Center in Charleston, West Virginia, and his residency at the University of Kentucky in Lexington. He completed fellowships in sports medicine at the Oklahoma Center for Athletes in Oklahoma City and in total joint replacement at Joint Implant Surgeons, Inc., in Columbus, Ohio.

Dr. Chillag is board certified by the American Board of Orthopaedic Surgery and is a Fellow with the American Academy of Orthopaedic Surgeons. He is a member of the Columbia Medical Journal Club, the Columbia Medical Society, the South Carolina Medical Association, the South Carolina Orthopaedic Association, the Association of Bone and Joint Surgeons, the American Association of Hip and Knee Surgeons and the National Osteonecrosis Foundation. He serves as an associate clinical professor with the University of South Carolina School of Medicine and has been honored as the Best Orthopedic Surgeon in the Midlands by Best Doctors. His specialties and clinical interests include hip and knee replacement surgery, revision total hip surgery and revision total knee surgery.

Jeffrey S. Hopkins, MD Clinical Assistant Professor
SPECIALTY(s)
Orthopedic Surgery
Board Certified
American Board of Orthopaedic Surgery
Residency
University of Kentucky Medical Center
Education
University of Kentucky College of Medicine
Fellowship
Joint Replacement Institute

Jeffrey S. Hopkins, MD, received his medical degree from the University of Kentucky College of Medicine in Lexington. He also completed his internship and residency at the University of Kentucky College of Medicine and completed a fellowship at the Joint Replacement Institute in Los Angeles.

Dr. Hopkins is board certified by the American Board of Orthopaedic Surgeons, is a candidate member with the American Academy of Orthopaedic Surgeons and a member of the South Carolina Medical Association. His specialties and clinical interests include total joint replacement surgery and arthroscopic knee surgery.

Bradley Presnal, MD Clinical Assistant Professor
SPECIALTY(s)
Orthopedic Surgery
Board Certified
American Board of Orthopaedic Surgery
Residency
Palmetto Health Richland
Education
Texas A&M University College of Medicine
Fellowship
Florida Knee & Orthopedic Centers

Bradley P. Presnal, MD, received his medical degree from the Texas A&M University College of Medicine in College Station. He completed his internship with the University of South Carolina School of Medicine in Columbia and his residency at Palmetto Health Richland in Columbia. He completed a fellowship in adult reconstructive surgery at Florida Knee and Orthopedic Centers in Clearwater and is board certified by the American Board of Orthopaedic Surgery. He is a Fellow with the American Academy of Orthopaedic Surgeons and a member of the American Association of Hip and Knee Surgeons. His specialties and clinical interests include hip replacement surgery, hip arthroscopy, knee replacement surgery, revision total hip surgery and revision total knee surgery.

Frank R. Voss, MD Associate Professor, Total Joint Arthroplasty

Foot and Ankle

Tyler A. Gonzalez, MD Clinical Assistant Professor

Tyler A. Gonzalez, MD, is a fellowship-trained orthopedic foot and ankle surgeon at Palmetto Health-USC Orthopedic Center in Columbia, South Carolina. After completing his bachelor's degree at the University of California, Berkeley, he received a master's in business administration and his medical degree from UCLA in Los Angeles. He completed his residency orthopedic surgery at Harvard Medical School in Boston, and his fellowship in foot and ankle surgery at Cedar Sinai Medical Center in Los Angeles.

Throughout his career, Dr. Gonzalez has focused on improving patient care, medical education and research. His interest and passion in translational, clinical and biomechanical research has prompted over 30 peer-reviewed scientific publications and several book chapters in orthopedic surgery. He routinely lectures at regional, national and international forums on foot and ankle topics and improving value-based patient care. Gonzalez is an active reviewer for publications including Foot and Ankle International, Foot and Ankle Orthopaedics and Foot and Ankle Specialist. He is a member of various foot and ankle surgery societies and is president and co-founder of Orthopaedic Foot and Ankle Society, Inc., a collaboration of foot and ankle surgeons to improve the delivery of health care, innovate on current surgical technologies and advance overall patient care.

Gonzalez has a clinical interest in foot and ankle reconstruction, ankle arthroscopy, foot and ankle arthritis, ankle replacement surgery, deformity correction, Charcot Marie Tooth disease, sports-related injuries, cartilage preservation and replacement surgery, minimally-invasive foot and ankle surgery, bunion and hammertoe surgery, ligament/tendon disorders, dance medicine and orthopedic trauma and fracture care. Outside of his clinical interests, Gonzalez's passions include medical education, entrepreneurship, health care management and policy, patient quality and safety, value-based health care research and clinical outcomes research.

J. Benjamin Jackson III, MD Associate Professor, Foot and Ankle
Specialty
Orthopedic Surgery, Ankle and Foot
Residency
Carolinas Medical Center
Education
Wake Forest School of Medicine
Fellowship
University of Utah

 

J. Benjamin Jackson, III, MD, completed his undergraduate education at Mars Hill College in Asheville, North Carolina, where he competed in cross country and track and field at the Division II level. He completed medical school at Wake Forest University School of Medicine, where he served as student body President. Dr. Jackson completed his orthopedic residency at Carolinas Medical Center in Charlotte, North Carolina, where he received the resident teaching award, and completed a fellowship in foot and ankle surgery at the University of Utah.

Dr. Jackson’s clinical interests include patients with injuries and disorders of the foot and ankle. He has a strong interest in research and has written numerous peer-reviewed articles and book chapters. He believes he can improve the outcomes of his patients through quality research and individualized patient care.

Outside of the office, he enjoys spending time with his wife and four boys and officiating collegiate and professional soccer.

General Orthopedics

David E. Koon Jr., MD, FAOA Associate Professor, General Orthopedics, CAQ Sports Medicine

SPECIALTY(s)
Orthopedic Surgery, Sports Medicine
Board Certified
American Board of Orthopaedic Surgery - Sports Medicine
Residency
Dwight David Eisenhower Army Medical Center
Education
University of South Carolina School of Medicine

 

David E. Koon, Jr., MD, completed his undergraduate studies at Clemson University in Clemson, South Carolina, and received his medical degree from the University of South Carolina School of Medicine in Columbia. He completed his internship and orthopedic residency at Dwight David Eisenhower Army Medical Center in Fort Gordon, Georgia, and served with distinction in the US Army with tours at Fort Gordon, Ft. Rucker in Alabama, and Vicenza, Italy.

Dr. Koon is a Fellow of the American Academy of Orthopaedic Surgeons, a member of the Christian Medical Association and the South Carolina Medical Association. He and his wife, Terri, are originally from the Columbia area. They have three children.

Mickey F. Plymale Clinical Assistant Professor
Mickey F. Plymale, MD, received his medical degree from Marshall University School of Medicine in Huntington, West Virginia. He completed his internship at Albert Einstein College of Medicine and his residency with Montefiore Medical Center, both in New York City. He completed fellowships at the Dr. James Andrews Sports Medicine and Orthopaedic Center and the American Sports Medicine Institute, both in Birmingham, Alabama. He is a member of the American Orthopedic Society for Sports Medicine, the Arthroscopy Association of North America, the American Academy of Orthopedic Surgeons and the American Sports Medicine Fellowship Society. His team physician history includes Auburn University athletics; Barons AA baseball, an affiliate of Chicago White Sox; the Alabama Ballet Company; the University of Alabama ice hockey team; the SEC baseball tournament; Vestavia Hills High School, 6A, of Birmingham, AL; and Truman High School in New York City. His specialties and clinical interests include upper extremity, hip and knee surgery, arthroscopic ACL reconstruction, meniscus repair, arthroscopic rotator cuff repair, shoulder stabilization procedures, patella instability, joint preservation, cartilage replacement, cartilage transplantation and partial knee replacement.

Pediatrics

Michael P. Horan, MD, MS Clinical Assistant Professor
SPECIALTY(s)
Orthopedic Surgery
Board Certified
American Board of Orthopaedic Surgery
Residency
University of Kentucky
Education
Medical University of South Carolina
Fellowship
Columbia University

 

Michael P. Horan, MD, MS, received his medical degree from the Medical University of South Carolina in Charleston and his master's degree in bioengineering and biomechanics from Clemson University in Clemson, South Carolina. He completed his internship and residency at the University of Kentucky in Lexington and completed a fellowship in pediatric orthopedics and spinal deformity at Columbia University in New York City.

Dr. Horan is board certified by the American Board of Orthopaedic Surgery and is a member of the American Academy of Orthopaedic Surgeons, the Pediatric Orthopaedic Society of North America and the South Carolina Medical Association. He serves as a clinical associate professor with the University of South Carolina School of Medicine and as a member of the Surgical Committee at Palmetto Health Children's Hospital. His specialties and clinical interests include pediatric orthopedics and trauma, children's fractures, spinal deformity, early onset scoliosis and scoliosis casting/growing rods.

Christopher R. Hydorn, MD Clinical Assistant Professor
SPECIALTY(s)
Orthopedic Surgery
Board Certified
American Board of Orthopaedic Surgery
Residency
Palmetto Health Richland
Education
University of Maryland School of Medicine
Fellowship
Children's Hospital of Philadelphia

 

Christopher R. Hydorn, MD, received his medical degree from the University of Maryland School of Medicine in Baltimore. He completed his internship and residency with the Palmetto Health/University of South Carolina School of Medicine Department of Orthopaedics in Columbia and completed a fellowship in pediatric orthopedics at Children's Hospital of Philadelphia.

Dr. Hydorn is board certified by the American Board of Orthopaedic Surgery and is a member of the American Academy of Orthopaedic Surgery and the Pediatric Orthopaedic Society of North America. A member of the Department of Pediatrics at Palmetto Health Children’s Hospital, he serves as Chair of the Pediatric Surgical Committee and as a member of the Operations Committee at the hospital. His specialties and clinical interests include pediatric orthopedics and surgery, young adult hip disorders, scoliosis, hand and foot deformity and limb lengthening and external fixation.

Mark D. Locke, MD Clinical Assistant Professor
SPECIALTY(s)
Orthopedic Surgery
Board Certified
American Board of Orthopaedic Surgery
Residency
Children's Memorial Hospital
Education
Case Western University Medical School
Fellowship
Scottish Rite Children's Medical Center

 

Mark D. Locke, MD, received his medical degree from Case Western University Medical School in Cleveland. He completed his internship at Northwestern Memorial Hospital and his residency at Children's Memorial Hospital, both in Chicago, and completed a fellowship in pediatric orthopedics at Scottish Rite Hospital in Atlanta.

Dr. Locke is board certified by the American Board of Orthopaedic Surgery and is a Fellow with the American Academy of Orthopaedic Surgeons, the American Academy of Pediatrics and Scoliosis Research Society. He is a member of the Pediatric Orthopaedic Society of North America and the American Academy of Cerebral Palsy, has been named Best Orthopedic Surgeon in the Midlands by Best Doctors and serves as an assistant professor with the University of South Carolina School of Medicine.

Dr. Locke's specialties and clinical interests include pediatric orthopedics, spinal deformity, scoliosis, and pediatric trauma.

Kristen M. Nathe, MD Clinical Assistant Professor

Spine

Gregory Grabowski, MD, FAOA Program Director, Orthopedic Surgery Residency Program
Associate Professor, Spine Surgery

Gregory Grabowski, MD, currently serves as co-director of the Palmetto Health-USC Spine Center and is an associate professor of orthopedic surgery at the University of South Carolina School of Medicine, Department of Orthopedic Surgery.

The program’s high faculty-to-student ratio allows early and individualized clinical exposure within the various subspecialties. “We have a small program, which allows us to have a very cohesive group,” Grabowski said. Additionally, he notes that having access to many of the primary physicians from the University of South Carolina sports medicine program offers residents unique exposure to high-level athletes.

Dr. Grabowski graduated from the University of Richmond in 2000 and spent the following year in the Jesuit Volunteer Corps, assigned to an HIV clinic in Baltimore. He attended the University of Maryland School of Medicine, where he was elected to the AOA honors medical society. He completed his residency at the University of Vermont, where he was named the top orthopedic teaching resident, and completed a fellowship in orthopedic spine surgery at the University of Pittsburgh Medical Center.

Dr. Grabowski joined the University of South Carolina School of Medicine faculty in 2011. HIs primary interests include care for patients with pathology in all areas of the spine, including cervical and lumbar, particularly spinal stenosis and deformity. He believes in a balanced approach to spine care, including non-operative management when possible and surgical intervention when necessary. He is a member of the American Academy of Orthopaedic Surgeons and North American Spine Society.

Erwin Z. Mangubat, MD Clinical Assistant Professor
SPECIALTY(s)
Neurological Surgery
Board Certified
Board Eligible
Residency
Rush University Medical Center
Education
University of Illinois at Chicago College of Medicine
Fellowship
Rush University Medical Center
Swedish Neuroscience Institute

 

Erwin Mangubat, MD, MPH, received his medical degree from the University of Illinois at Chicago College of Medicine, and completed his master’s in public health at the University of Illinois at Chicago School of Public Health. He completed his neurosurgery residency at Rush University Medical Center in Chicago, followed by an epilepsy and functional neurosurgery fellowship at the Swedish Neuroscience Institute in Seattle. He returned to Rush University Medical Center for his endovascular fellowship. Dr. Mangubat’s clinical interests include endovascular neurosurgery, as well as epilepsy and functional neurosurgery.

Research interests
Deep Brain Stimulation and Coil Technology for Cerebral aneurysms

Seth S. Molloy, DO Clinical Assistant Professor

Seth S. Molloy, DO, MSc, received his Doctorate of Osteopathic Medicine and master’s in biomedical science from A.T. Still University, Kirksville College of Osteopathic Medicine in Kirksville, Missouri. He completed his neurosurgery residency at Advocate BroMenn Medical Center in Normal, Illinois, followed by a neurosurgical spine fellowship at the University of Miami. He is board certified by the American Osteopathic Board of Surgery. His clinical interests include general neurosurgery with an emphasis on minimally invasive techniques for the treatment of complex spinal conditions including adult scoliosis, tumors and trauma.

Research interests
Minimally-invasive treatment techniques for complex spinal conditions

Sports Medicine

Guillaume D. Dumont, MD Associate Professor, Sports Medicine

Guillaume D. Dumont, MD, is a native of Montreal, Canada, and earned his undergraduate degree in biochemistry at the University of Tennessee, where he played football. He received his medical degree from Emory University in Atlanta, and completed his orthopedic surgery residency at the University of Texas Southwestern Medical Center in Dallas. He served as chief resident and was awarded the W. Brandon Carrell Distinguished Physician Award during his residency. Dr. Dumont then travelled to the Alps Surgery Institute in Annecy, France, for a fellowship with Dr. Laurent Lafosse, a world leader and innovator in shoulder surgery. He also completed a fellowship in sports medicine & shoulder surgery at Harvard Medical School/Massachusetts General Hospital in Boston, where he helped care for athletes of all levels, including the New England Patriots and Boston Bruins. Dr. Dumont completed additional training in hip arthroscopy and hip preservation in Nashville with Dr. Thomas Byrd, a pioneer in the field

Dr. Dumont specializes in the treatment of shoulder, knee and hip injuries. His clinical interests include sports medicine; shoulder instability, dislocations, labrum/rotator cuff injuries, and shoulder arthritis; knee conditions including ligament, meniscus, and cartilage injuries; and hip conditions including femoroacetabular impingement (FAI), labral injuries, snapping hip, and arthroscopic hip surgery. He is actively involved in clinical research, focusing his efforts on the investigation of injuries and treatments of the shoulder, knee and hip. He has presented research at local and national orthopedic meetings and authored a number of publications in the orthopedic literature. He is a member of the American Academy of Orthopaedic Surgeons (AAOS), the American Orthopaedic Society for Sports Medicine (AOSSM), and the Arthroscopy Association of North America (AANA). Dr. Dumont strives to deliver outstanding care to individuals of all athletic skill and activity levels. His goal is to help his patients overcome their orthopedic injuries to return to their desired activities and lifestyles.

Jeffrey A. Guy, MD Professor, Sports Medicine

Jeffrey Guy, MD, received his medical degree and residency training at Harvard University. He completed fellowships in trauma at Massachusetts General Hospital and pediatric sports medicine at Boston Childrens Hospital, and finished his training with a fellowship in sports medicine under the direction of Drs. James Andrews and Bill Clancy at the American Sports Medicine Institute in Birmingham, Ala. Dr. Guy is currently an assistant professor within the Department of Orthopaedic Surgery and Sports Medicine at the University of South Carolina School of Medicine and Director of the University of South Carolina Sports Medicine Center.

In addition, he serves as medical director of the Athletic Training Education Program in the College of Education and adjunct professor within the USC Arnold School of Public Health Department of Exercise Science. As medical director and team physician of the University of South Carolina Athletics, Dr. Guy oversees all of the athletic teams at the University of South Carolina. Dr. Guy is a member of the American Orthopaedic Society for Sports Medicine, American Sports Medicine Institute Fellowship Society, Clinical Orthopaedic Society, and the South Carolina Medical Association.

S. Wendell Holmes Jr., MD Clinical Assistant Professor
Christopher G. Mazoue, MD, FAOA Associate Professor and Chair
Contact Information
(803) 434-7121
2 Medical Park, LL10
Columbia, SC 29203

Department
Orthopaedic Surgery
Division of Sports Medicine

Medical Education
Louisiana State University School of Medicine, MD, 1997

Residencies
University of Texas Southwestern Medical Center, 2002

Fellowships
American Sports Medicine Institute, 2003

Specialties
Orthopaedic Surgery and Sports Medicine

Board Certifications
American Board of Orthopaedic Surgery, 2005

Biography
Christopher G. Mazoue, M.D., attended Cornell University, in Ithaca, New York, where he received a Bachelor of Arts Degree in Economics and played football. After receiving his medical degree from Louisiana State University School of Medicine, New Orleans, Louisiana with election to the AOA honors medical society. He completed his residency in Orthopaedic Surgery at the University of Texas Southwestern Medical Center in Dallas. Dr. Mazoue then completed a fellowship in Sports Medicine at the American Sports Medicine Institute in Birmingham, Alabama, under the guidance of renowned orthopaedic surgeons, James Andrews, M.D. and William Clancy, M.D. He is currently an Associate Professor of Orthopaedic Surgery at the University of South Carolina School of Medicine. 

Dr. Mazoue is a board certified Orthopaedic Surgeon with a subspecialty in Sports Medicine and Arthroscopic Surgery. His clinical expertise includes complex shoulder and elbow surgery, shoulder reconstruction, shoulder replacement and complex knee injuries. With extensive experience caring for athletes at all levels, Dr. Mazoue has treated patients from youth to professional leagues. Through USC Sports Medicine, he provides care for numerous local middle schools, high schools and colleges, He is the team physician for the University of South Carolina, South Carolina State University and Benedict College. 

Dr. Mazoue is a member of the American Academy of Orthopaedic Surgeons and the American Orthopaedic Society for Sports Medicine. He has numerous publications and lectures locally, regionally and nationally.

Trauma

Thomas M. Jones, MD Clinical Assistant Professor
SPECIALTY(s)
Orthopedic Surgery
Board Certified
American Board of Orthopaedic Surgery
Residency
University of Wisconsin Hospital
Education
Medical College of Georgia
Fellowship
University of California at Davis

 

Thomas Moss Jones, MD, is a graduate of the Medical College of Georgia and North Georgia College and State University. He completed his orthopedic surgery residency at University of Wisconsin Hospitals and Clinics. He also completed an orthopedic trauma fellowship at the University of California at Davis.

Kevin A. Murr, MD Clinical Assistant Professor
Michael C. Tucker, MD Clinical Associate Professor
SPECIALTY(s)
Orthopedic Surgery
Board Certified
American Board of Orthopaedic Surgery
Residency
Medical College of Georgia
Education
Medical University of South Carolina
Fellowship
Carraway Methodist Medical Center

Michael C. Tucker, MD, is a graduate of Clemson University and the Medical University of South Carolina. He completed his orthopedic surgery residency at the Medical College of Georgia and an orthopedic trauma fellowship at Carraway Methodist Medical Center in Birmingham, Alabama.

Upper Extremity

Earl B. McFadden Jr., MD Clinical Assistant Professor
SPECIALTY(s)
Orthopedic Surgery, Surgery of the Hand
Board Certified
American Board of Orthopaedic Surgery
Residency
Johns Hopkins University/Union Memorial Hospital
Education
Medical University of South Carolina
Fellowship
University of Louisville

 

Earl B. McFadden Jr., MD, received his medical degree from the Medical University of South Carolina in Charleston. He completed his internship at Greenville Hospital System in Greenville, South Carolina, his residency at Johns Hopkins University/Union Memorial Hospital in Baltimore, and completed a fellowship at the University of Louisville in Louisville, Kentucky.

Dr. McFadden is board certified by the American Board of Orthopaedic Surgery, is a Fellow with the American Academy of Orthopaedic Surgeons, a member of the American Association of Hand Surgery and is affiliated with Lima Corporate and Biomet, Inc., for shoulder arthroplasty. His specialties and clinical interests include hand/wrist/elbow/shoulder surgery, fracture care, shoulder arthroscopy, impingement surgery, total shoulder replacement surgery, reverse shoulder replacements, carpal tunnel syndrome, nerve compression surgery, arthroscopic rotator cuff repair, tendon reconstructive surgery and arthritis reconstructive surgery.

 

James L. McFadden, MD Clinical Assistant Professor

Specialty: Orthopedic Surgery

Board Certified: Board eligible

Education: Medical University of South Carolina

Residency: University of Alabama Hospital at Birmingham

Fellowship: Florida Orthopaedic Institute

John J. Walsh, IV, MD, joined the University of South Carolina School of Medicine faculty in 1999 after completing a hand surgery fellowship at the Mayo Clinic in Rochester, Minnesota. He previously served as Clinic Director and Staff Orthopaedic Surgeon at Moncrief Army Community Hospital at Fort Jackson in Columbia, South Carolina. Dr. Walsh received his bachelor's degree in biology at the University of Delaware in Newark. He received his medical degree from Jefferson Medical College in Philadelphia and completed an orthopaedic surgery residency and a transitional internship at Dwight David Eisenhower Army Medical Center at Fort Gordon, Georgia.

He is board certified in orthopedic surgery and has a Certificate of Added Qualification in surgery of the hand. Dr. Walsh has lectured internationally on a broad range of general orthopedic and upper extremity surgical conditions. He is a member of the American Society for Surgery of the Hand and the Christian Medical Society. His primary interests are hand and upper extremity surgery, joint replacement of the shoulder and elbow, and reconstructive osteotomies for bone deformity. He is also interested in reconstruction for brachial plexus injuries.