Mark H. Henderson Jr., M.D. (Retired)

Mark H. Henderson Jr., M.D. (Retired)

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Mark Henderson, Jr., M.D. specializes in orthopaedic surgery at the Southern Maryland Orthopaedic & Sports Medicine Center division in Leonardtown, Maryland.  His practice emphasizes the treatment of sports injuries of the shoulder and knee as well the non-surgical and surgical care of shoulder, hip, and knee arthritis and spinal degeneration. He offers less-invasive hip and knee replacement options and bilateral knee replacement. He also offers standard and arthroscopic methods for repair of shoulder injuries and rotator cuff disorders.

As the father of eight children, he is involved in a plethora of youth activities. He has been involved in Boy Scouts of America since arriving in 1990 and has coached basketball, volleyball and sailing. He specializes in high adventure pursuits that include whitewater kayaking, windsurfing, kiteboarding, diving, snowboarding and mountain climbing. He is an avid cyclist and has commuted regularly to work for the past 19 years, averaging over 2,000 miles each year.

Areas Of Expertise

Orthopaedic Surgery

Knee and Hip Arthroplasty


General orthopaedics

Medical Degree

Medical College of Virginia; Richmond, VA


Thomas Jefferson University Hospital; Philadelphia, PA

Rothman Institute; Philadelphia, PA


Thomas Jefferson University; Philadelphia, PA


American Board of Orthopaedic Surgery

Professional Associations

State Orthopaedic Society

Fellow, The American Academy of Orthopaedic Surgeons

Fellow, The American College of Surgeons

Member, Maryland Orthopaedic Association

Major Accomplishments

Published in Journal of Bone and Joint Surgery (BJS) during residency

Hospital Affiliations

MedStar St. Mary’s Hospital