Orthopedic Surgeons of Southern Indiana

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Do you have knee or hip pain, neck or back pain due to a spine injury, a sports or work-related injury? Are daily activities becoming increasingly more difficult? Injuries and diseases of the musculoskeletal system affect over 28 million Americans each year. At Orthopedic Surgeons of Indiana, we provide diagnosis, treatment, prevention and rehabilitation for all types of bone, spine and muscle problems for patients of all ages.

Using the most advanced techniques and treatments available, our physicians provide a full complement of care options for arthritis, joint replacement, sports-related injuries, and spine surgery — all with a focus on providing maximum comfort with short recovery times.

We provide high-level care for injuries such as sprains, dislocations, fractures, bulging or herniated discs, bone spurs, spinal stenosis as well as degenerative conditions like osteoarthritis. And we specialize in a wide array of surgical procedures like minimally-invasive total knee and hip replacements and spinal surgery.

Clark Memorial Hospital: Orthopedics

Learn about a Fast Track Knee and Hip Replacement and arthritis

Our Medical Staff

Patrick Bauer, MD

Dr. Bauer received his Master’s degree from the University of Louisville and graduated Magna Cum-Laude from the University of Louisville School of Medicine. He completed his internship in general surgery and residency in orthopedic surgery at the University of Louisville. While a resident, Dr. Bauer was honored with the K. Armand Fischer Award and Gerhard Kuntscher Award as most outstanding teaching resident. Dr. Bauer has had presentations with the American Academy of Orthopaedic Surgeons, including a paper at the American Association of Hip and Knee Surgeons. Dr. Bauer has a publication regarding Manganous Ion Uptake in Oral Streptococci. He is board certified and served as Chief of Surgery at Clark Memorial Hospital for two years.


Nyagon G. Duany, MD

Sports Medicine services for both adult and young athletes. 
Accepting New Patients! Same day and next day appointments available!

NEW! Dr. Duany is one of three providers offering Osteoporosis services. She offers counseling on bone fractures and related osteoporosis risks.  For more information on Osteoporosis and the Bone Health Team, visit our Healthy Screenings page.

Dr. Duany received her Doctorate of Medicine in 2005 and completed a general surgery internship at the Indiana University School of Medicine. She completed her Orthopedic Residency at Howard University in Washington D.C. and a Sports Medicine Fellowship at the Wellington Sports Medicine University of Cincinnati. While pursuing her undergraduate degree at Bradley University, she played collegiate Division 1 basketball. Since 2006, she has provided team coverage for a number of university and high school sports teams and will continue to do so in southern Indiana. Her primary focus will be Sports Medicine services for both adult and young athletes as well as the diagnosis, treatment and surgery of a wide-variety of orthopedics for the general community.


John Lindner, MD

Dr. Lindner received his undergraduate degree in biology from the University of Kentucky and his degree in medicine from the University of Louisville, completing his general surgery internship and orthopedic surgery residency at the University of Louisville School of Medicine. He was named Administrative Chief Resident in the Department of Orthopedic Surgery, and was honored with the K. Armand Fischer Award and the Gerhard Kuntscher Award. He served as a major and a staff orthopedic surgeon in the U.S. Air Force Medical Corps, and was awarded the Preceptor of the Year for the Physician’s Assistant Phase II training while stationed at Scott AFB in Illinois. He has written a publication on Autogenous Corticocancellous Bone Grafting.


New! Spine Surgery
Accepting New Patients!

John T. Mahan, MD, Spine Surgeon

Dr. Mahan offers a comprehensive range of servcies for patients with chronic spine pain originating from the neck or back. He graduated with a medical degree and completed his residency in Orthopedic Surgery at the University of Louisville.  Dr. Mahan obtained a Fellowship at Tulane University in New Orleans, Louisiana. He has has specialized in Orthopedics for over 20 years and most recently practiced over 10 years at Spine Surgery, PSC in Louisville. Dr. Mahan is certified by the American Board of Orthopedic Surgery.


Thomas E. Sehlinger, MD

Dr. Sehlinger has a Bachelor’s degree in political science, a Master’s degree in anatomy and a medical degree from the University of Louisville School of Medicine. He completed his internship in general surgery at the University of Louisville, conducting research and publishing articles on the history and development of orthopedic implant devices. He was honored with the Gerhard Kuntscher Award for outstanding teaching resident 1993- 1994 and the Orthopedic Residents Research Award. He has written publications on the Separation of Fuchsian Homologs using High Performance Liquid Chromatography and Thin Layer of Commercial Samples of AmidoBlack. He has served numerous terms on the Clark Memorial Hospital Surgical Review Committee, Strategic Planning Committee and Foundation Board. 


Brent M. Walz, MD

Dr. Walz received his Bachelor’s of Science degree in biology from Indiana University and his degree in medicine from the University of Louisville. He completed his orthopedic surgery residency at University of Louisville School of Medicine and served as the Administrative Chief Resident in the Department of Orthopedic Surgery. He has co-authored a chapter on humeral fracture fixation in Master Techniques in Orthopaedic Surgery, Fractures. Dr. Walz’s interests include joint replacement, arthroscopy and fracture fixation.