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Our knee surgeons perform knee replacements as a treatment for degenerative joint disease as well as other procedures for chronic knee pain.

Knee Replacement Surgeons

Aaron J. Johnson, MD

Aaron J. Johnson, MD

Assistant Professor of Orthopaedics, University of Maryland School of Medicine

Sumon Nandi, MD, MBA, FAOA

Sumon Nandi, MD, MBA, FAOA

Associate Professor of Orthopaedics, University of Maryland School of Medicine, Chief of Adult Reconstruction

Vincent Y. Ng, MD

Vincent Y. Ng, MD

Associate Professor of Orthopaedics

Marissa Elizabeth Bonyun, MD, MEd

Marissa Elizabeth Bonyun, MD, MEd

Assistant Professor of Orthopaedics, University of Maryland School of Medicine

Knee Replacement Care Team

Jamie Harris

Jaime Harris, MS, LAT, ATC, OPE-C

Athletic Trainer and Physician Extender

Casey Loudermilk

Zakiya Johnson-Blackston

Total Joint Replacement Surgical Scheduler

Pam Wilson

Pam Wilson, BSN, RN

Total Joint Replacement Nurse Coordinator

Julie Yetso

Julie Yetso, PA-C

Senior Physician Assistant

Acute Injury Knee Surgeons

Acute knee surgeons see patients for specific knee injuries such as ACL injuries or meniscus tears.

R. Frank Henn, III, MD

R. Frank Henn, III, MD

Professor and Interim Chair of Orthopaedics, University of Maryland School of Medicine; Chief of Sports Medicine

Natalie L. Leong, MD

Natalie L. Leong, MD

Assistant Professor of Orthopaedics, University of Maryland School of Medicine

Sean J. Meredith, MD

Sean J. Meredith, MD

Assistant Professor of Orthopaedics

Jonathan D. Packer, MD

Jonathan D. Packer, MD

Associate Professor of Orthopaedics, University of Maryland School of Medicine

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If You Have a Broken Bone...

Our fracture specialists can assess and treat your injury. And we'll see you within one business day. 
Fracture