Dr. Umur Aydogan

Amiethab Aiyer, M.D., is an orthopaedic surgeon specializing in treating patients with foot and ankle conditions, such as fractures, deformities, and ligament and tendon tears. He is skilled in minimally invasive bunion correction, Achilles tendon rupture repair, as well as ankle reconstruction and replacement. Dr. Aiyer is the division chief of foot and ankle surgery in the Johns Hopkins Department of Orthopaedic Surgery. He completed his medical training at Drexel University College of Medicine in Philadelphia. During his fourth year of medical school, Dr. Aiyer completed a research fellowship at the Rothman Orthopaedic Institute, also in Philadelphia. He then completed an orthopaedic surgery residency at the Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania. During the residency, Dr. Aiyer received multiple awards, including the Alan Levine Orthopaedic Graduate Medical Education Scholarship from the American Academy of Orthopaedic Surgeons (AAOS). He has also been selected to present at the Orthopaedic Research and Education Foundation Resident Research Symposium and as an American Orthopaedic Association (AOA) Emerging Leader. In his final year of residency, he received the Gold Humanism Resident Teacher Award. Dr. Aiyer went on to complete a research and clinical fellowship at the Institute for Foot and Ankle Reconstruction at Mercy Medical Center in Baltimore. As a researcher, he is currently investigating diagnosis, surgical treatments and patient outcomes for bunions, Achilles tendon ruptures, ankle arthritis, ankle trauma and other conditions affecting the foot and ankle. His research encompasses clinical, basic science and biomechanical studies. He has presented his research at numerous conferences held by the American Orthopaedic Foot & Ankle Society, AAOS and other professional organizations of which he is a member. He is a fellow of the AAOS and AOA, and a member of the Alpha Omega Alpha Honor Medical Society. Along with special interests in clinical practice and multiple facets of orthopaedic foot and ankle research, he is passionate about teaching residents and medical students; he has been mentoring medical students for several years. Dr. Aiyer has been recognized for his commitment to education with multiple teaching and faculty educator awards, and he is working with other orthopaedic surgeons to develop a nationwide push for medical student mentorship. Using social media platforms, he co-founded the @orthomentor Instagram account to provide students with easy access to mentorship and advising. Dr. Aiyer is rated as a Distinguished provider by MediFind in Osteotomy. His top areas of expertise are Achilles Tendon Rupture, Metatarsus Adductus, Flat Feet, Tendinitis, and Osteotomy.

Gregory Guyton is a Podiatric Surgeon and an Orthopedics provider in Bel Air, Maryland. Dr. Guyton is rated as an Advanced provider by MediFind in Osteotomy. His top areas of expertise are Flat Feet, Achilles Tendon Rupture, Osteoarthritis, Osteotomy, and Endoscopy. Dr. Guyton is currently accepting new patients.

Andrew Cosgarea, M.D., is a sports medicine specialist with expertise in the diagnosis and nonsurgical treatment of sports-related injuries, particularly those affecting the knee and shoulder and elbow, including sprains, strains, ligament tears and joint instability. An experienced sports medicine surgeon and a professor of orthopaedic surgery at the Johns Hopkins University School of Medicine, Dr. Cosgarea will transition away from performing surgical procedures as of July 1, 2025. He will continue to provide office-based patient care, and will remain actively involved in clinical consultation, research and medical education. Dr. Cosgarea’s research focuses on knee biomechanics and improving outcomes in the treatment of sports injuries. He has authored two textbooks and more than 150 peer-reviewed articles and book chapters. His surgical expertise includes arthroscopic rotator cuff repair, ACL reconstruction, meniscus repair, elbow UCL reconstruction and shoulder instability stabilization procedures. He serves as the head team physician for the Johns Hopkins University Department of Athletics, is the former chief of the Division of Sports Medicine in the Johns Hopkins Department of Orthopaedic Surgery, and served as a team physician for the Baltimore Orioles from 2000 to 2010. In 2012, he was named one of the “125 Knee Surgeons and Specialists to Know” by Becker’s Spine Review. Dr. Cosgarea is a member of numerous professional organizations, including the American Board of Orthopaedic Surgery, the American Orthopaedic Society for Sports Medicine, the Arthroscopy Association of North America, and the International Patellofemoral Study Group. Additionally, he serves on the board of directors of the Patellofemoral Foundation. He earned his medical degree from Jefferson Medical College in Philadelphia, did his orthopaedic surgery residency at the University of Rochester and completed a fellowship in orthopaedic sports medicine at The Johns Hopkins Hospital. Prior to joining Johns Hopkins in 1998, he was an assistant professor of orthopaedic surgery at the Ohio State University Medical Center, and served as an orthopaedic consultant for the Ohio State athletic department. Videos Dr. Andrew Cosgarea Meniscus InjuriesQ&A with Dr. Andrew Cosgarea Recent News Articles and Media Coverage History of second Tommy John surgeries raises questions about Mike Clevinger’s futureThe San Diego Union-Tribune (November 2020) Running and aging usually don't mix. But at 62, quitting isn't an option for me.The Washington Post (May 2019) 3 ACL Tears Won’t Keep Creighton’s Martin Krampelj off CourtAP News (October 2018) ACL SurgeryMichelle Baker's StoryJohns Hopkins Medicine (March 2017) Insider: Why can't the Colts stay healthy?Indystar.com (September 2016) The Most Common Injury at the OlympicsCNN.com (August 2016). Dr. Cosgarea is rated as an Advanced provider by MediFind in Osteotomy. His top areas of expertise are Hypermobile Joints, Trochlear Dysplasia, Compartment Syndrome, Osteotomy, and Endoscopy.