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Meet our Orthopaedic Surgeons

Orthopaedic specialists are physicians trained to diagnose and care for disorders of the bones, joints, muscles, ligaments, tendons, nerves and skin - elements that make up the musculoskeletal system. They are involved in all aspects of musculoskeletal health and use medical, physical and rehabilitative methods, as well as surgery, to address problems. Our orthopaedic surgeons provide a full range of services and many also specialize in one or several areas such as the foot, hand, shoulder, spine, hip or knee, or sports medicine.

Our physicians keep abreast of changes in surgical techniques and emerging technologies to offer patients the most up-to-date procedures. Members of Chester County Hospital surgical staff are board certified in their areas of expertise.

Our physicians lecture on a variety of topics related to bone and joint problems, such as arthritis, to help patients understand and make sound decisions about their orthopaedic care.

Kenan Aksu, DO
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A member of Chester County Hospital Medical Staff since 2002, Dr. Aksu received his medical degree from the Philadelphia College of Osteopathic Medicine where he also completed his residency training in orthopaedic surgery. He went on to complete a fellowship in orthopaedic spine surgery and reconstruction at the Florida Spine Institute.

John Benner, IV, MD
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A member of Chester County Hospital Medical Staff since 1978, Dr. Benner serves as Chief of the Section of Orthopaedics, Department of Surgery at Chester County Hospital. He received his medical degree from Jefferson Medical College of Thomas Jefferson University. He completed an internship at Abington Memorial Hospital, a residency at Thomas Jefferson University and additional training at Rancho Los Amigos Hospital for spinal chord injury and low back management. He is a past recipient of the Everett J. Gordon Award in Orthopaedics and is board certified in Orthopaedic Surgery. Dr. Benner is a fellow of the American Academy of Orthopaedic Surgery and has been in private practice with Chester County Orthopaedic Associates, Ltd., since 1978. He is a member of Chester County Hospital Board of Directors.

Andrew S. Frankel, MD
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A member of Chester County Hospital Medical Staff since 1994, Dr. Frankel received his medical degree from the University of Pennsylvania School of Medicine. He completed his orthopaedic residency at the Thomas Jefferson University Hospital where he went on to complete a fellowship in Adult Reconstruction. Dr. Frankel is Board Certified in Orthopaedic Surgery.

Robert H. Huxster, MD
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A member of Chester County Hospital Medical Staff since 1984, Dr. Huxster received his medical degree from Jefferson Medical College of Thomas Jefferson University. He completed an internship at Bryn Mawr Hospital, a residency at Thomas Jefferson University Hospital and a fellowship at The Hand Rehabilitation Center at Thomas Jefferson University Hospital. He is Board Certified in Orthopaedic Surgery and a fellow of the American Academy of Orthopaedic Surgery. Dr Huxter has been in private practice since 1984, joining Chester County Orthopaedics Associates, Ltd., in 1997. He served as Chief of Chester County Hospital Medical Staff from 1997 to 1999, and he has been seen playing bass guitar in the popular Medical Staff Blues Band.

Gregory Kirwan, D.O.
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Dr. Kirwan is a graduate of the U.S. Naval Academy and served on active duty in the United States Navy. He attended medical school and received his residency training in Orthopaedic surgery at the Philadelphia College of Osteopathic Medicine. Dr. Kirwan then completed a fellowship in Orthopaedic Foot and Ankle Surgery at the University of Pennsylvania in Philadelphia, Pennsylvania. Additionally, Dr. Kirwan is a member of the American Orthopaedic Foot and Ankle Society, the American Academy of Orthopaedic Surgeons, and the American Osteopathic Academy of Orthopaedics.

Christopher J. Lyons, MD
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Dr. Lyons is a graduate of the Temple University School of Medicine, where he completed a surgical residency with the Department of Orthopaedic Surgery and Sports Medicine. He provides care for a multitude of Orthopaedic conditions, such as arthritis, fractures, carpal tunnel syndrome, and has extensive experience as a trauma surgeon. Dr. Lyons performs minimally invasive total knee and hip replacements. He is a fellow of the American Academy of Orthopaedic Surgery. He is a past recipient of the John W. Lachman Award for Excellence in Orthopaedic Surgery and the Mary P. Wiedeman Award for Excellence in Physiology Research.

John P. Manta, MD
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John P. Manta, M.D. is a Board Certified Orthopaedic Surgeon with fellowship training in sports medicine and arthroscopic knee and shoulder surgery. He completed medical school, a general surgery internship, and an Orthopaedic residency at Temple University in Philadelphia. Dr. Manta continued his training with a fellowship in sports medicine at Georgetown University, where he worked with some of the leaders in the sports medicine field. Dr. Manta has published several papers and original articles on topics such as anterior cruciate ligament injuries and shoulder abnormalities. Additionally, Dr. Manta has been elected to membership in the American Orthopaedic Society for Sports Medicine and the American Academy of Orthopaedic Surgeons.

Todd A. Michener, MD
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A member of Chester County Hospital Medical Staff since 2007, Dr. Michener graduated from Vanderbilt University School of Medicine in Nashville, TN. He completed an Orthopaedic Surgery residency at the University of Pennsylvania in Philadelphia, and a Sports Medicine fellowship at Steadman Hawkins Clinic of the Carolinas in Spartanburg, SC. Dr. Michener practices general orthopaedics with concentrations in sports medicine and arthroscopic surgery of the shoulder, knee, elbow and hip, including arthroscopic rotator cuff repair, tennis elbow release and knee ligament reconstruction. Board Eligible Orthopaedic Surgeon, Dr. Michener is in practice with Chester County Orthopaedic Associates.

Cheston Simmons, Jr., MD
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A member of Chester County Hospital Medical Staff since 1994, Dr. Simmons received his medical degree from Jefferson Medical College of Thomas Jefferson University. He completed an internship at Graduate Hospital, a residency at Thomas Jefferson University Hospital, a research fellowship at The Rothman Institute in Philadelphia and a fellowship in joint replacement and spinal surgery at The New England Baptist Hospital in Boston. He is past recipient of the Everett J. Gordon Award for Clinical Excellence in Orthopaedics and previously served as a staff physician with the New England Baptist Hospital. Dr. Simmons is Board Certified in Orthopaedic Surgery and is a fellow of the American Academy of Orthopaedic Surgery. He has been in private practice with Chester County Orthopaedics Associates, Ltd., since 1994.

Mark E. Tantorski, D.O.
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A member of Chester County Hospital Medical Staff since 2012, Dr. Tantorski received his medical degree from the University Of New England College Of Osteopathic Medicine. He completed his orthopaedic residency at Philadelphia College of Osteopathic Medicine and a fellowship in spinal surgery at New England Baptist Hospital. Board eligible orthopaedic surgeon, Dr. Tantorski is a member of the North American Spine Society, the American Academy of Orthopaedic Surgeons, and the American Osteopathic Academy of Orthopaedics. Dr. Tantorski is an orthopaedic surgeon with subspecialty training in the surgical management of adult spinal disorders.

Adrienne Towsen, MD
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A member of Chester County Hospital Medical Staff since 2006, Dr. Towsen received her medical degree from the Medical College of Pennsylvania. She completed an internship and residency at Allegheny General Hospital in Pittsburgh and a fellowship at the Thomas Jefferson University Hospital. She has joined Chester County Orthopaedic Associates.

Richard Ziegler, MD
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A member of Chester County Hospital Medical Staff since 1987, Dr. Ziegler received his medical degree from Jefferson Medical College of Thomas Jefferson University. He completed an internship and residency at Thomas Jefferson University Hospital, and a fellowship in sports medicine at Lankenau Hospital. He is Board Certified in Orthopaedic Surgery and a fellow of the American Academy of Orthopaedic Surgery. He has been in private practice since 1984, joining Chester County Orthopaedics Associates, Ltd., in 1987.

Last Updated: 9/29/2014