Dr. Stephen H. Martenson

Ronald Delanois is an Orthopedics provider in Frederick, Maryland. Dr. Delanois is highly rated in 19 conditions, according to our data. His top areas of expertise are Osteoarthritis, Infectious Arthritis, Septic Arthritis, Knee Replacement, and Hip Replacement.

Felasfa Wodajo is an Orthopedics provider in Woodbridge, Virginia. Dr. Wodajo is highly rated in 28 conditions, according to our data. His top areas of expertise are Bone Tumor, Ewing Sarcoma, Hemangiopericytoma, Osteochondroma, and Hip Replacement. Dr. Wodajo is currently accepting new patients.

Dr. Joseph O’Brien is a specialist in minimally invasive spine surgery. He spent 9 years at GWU as an associate professor of Orthopaedic Surgery and Neurological Surgery. Additionally, he was formerly the Medical Director of Minimally Invasive Spine Surgery at The GW Hospital. He is a fellow in the Academy of Orthopaedic Surgery. He completed his spine surgical training at the Johns Hopkins University Medical Center. Dr. O’Brien actively pursues research in ways to improve spine surgery and techniques to salvage failed spine surgery. He has been published in a variety of medical journals including Spine, the Journal of Neurosurgery Spine, Neurosurgery, Journal of the American Academy of Orthopaedic Surgery, and Current Orthopaedic Practice. His research has been presented around the globe with between 10-20 research presentations on a national level per year. He offers expertise in minimally invasive surgery and revision of failed spine surgery. In particular, he has an interest in failed cervical spine surgery. Dr. O'brien is highly rated in 19 conditions, according to our data. His top areas of expertise are Spondylolisthesis, Scoliosis, Spinal Stenosis, Microdiscectomy, and Herniated Disc Surgery.