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Clinical Research

Experts in the Department of Orthopaedic Surgery are dedicated to advancing the field through thoughtful and groundbreaking clinical research. Their discoveries impact the diagnosis and treatment of orthopaedic conditions and the quality of life for patients and their families.

Our Clinical Researchers

David Bradford Cohen, M.D., M.P.H.

Assistant Professor of Orthopaedic Surgery

Expertise, Disease and Conditions: Back Disorders, Cervical Degenerative Disc Disease, Cervical Degenerative Disc Herniation, Cervical Disc Herniation, Cervical Myelopathy, Cervical Radiculopathy, Cervical Spine Trauma, Cervical Spondylosis, Coccydynia, Coccygectomy, Complex Spinal Reconstructions, Degenerative Disc Disease, Degenerative Spine Disease, Disc Pain, Herniated Disc, Kyphosis, Lumbar Degenerative Disease, Lumbar Disc Herniation, Lumbar Radiculopathy, Minimally Invasive Spine Surgery, Orthopaedic Surgery, Orthopaedics, Revision Spinal Surgery, Sacroiliac Joint Conditions, Sacroiliitis, Scoliosis, Spinal Decompression, Spinal Deformities, Spinal Fixation, Spinal Fusion, Spinal Reconstruction, Spinal Stenosis, Spinal Trauma, Spine, Spine and Spinal Deformities, Spondylolisthesis, Spondylosis, Thoracic Disc Herniation, Thoracic Spine Surgery

Research Interests: Spinal deformities, Patient safety, Scoliosis, Development of large animal osteoporosis model, Vertebral augmentation, Spinal osteoporosis, Clinical outcomes studies

Andrew John Cosgarea, M.D.

Professor of Orthopaedic Surgery
The Drew Family Professor of Orthopaedic Surgery in honor of Alec J. Cosgarea
Head Team Physician, Johns Hopkins University Athletic Department

Expertise, Disease and Conditions: ACL Reconstruction, Arthroscopic Rotator Cuff Repair, Baseball Injuries, Elbow UCL Reconstruction, Knee Meniscus Repair, Orthopaedic Surgery, Orthopaedics, Patellar Instability Stabilization, Pediatric and Adolescent Sports Injuries, Shoulder Instability Stabilization Surgery, Shoulder Joint Dislocations, Sports Medicine, Superior Labrum Anterior and Posterior (SLAP) Lesions

Research Interests: Knee and shoulder rehabilitation, Adolescent sports injuries, Computer simulation of knee biomechanics, ACL reconstruction, Patellofemoral disorders and treatment, Knee biomechanics, Patellofemoral instability, Throwing shoulder biomechanics, Surgical and nonsurgical treatment of sports injuries

Rajwinder Singh Deu, M.D.

Assistant Professor of Orthopaedic Surgery

Expertise, Disease and Conditions: Dance Injuries, Elbow Injuries, Joint Pain, Knee Injuries, Muscle Strain Injuries of the Hip, Musculoskeletal Disorders, Musculoskeletal Injuries, Orthopaedic Surgery, Orthopaedics, Pediatric and Adolescent Sports Injuries, Platelet-Rich Plasma, Sports Injuries, Sports Injuries to the Ankle, Sports Injuries to the Shoulder, Sports Medicine (non-surgical)

Research Interests: Comprehensive medical care of athletes

James Robert Ficke, M.D.

Professor of Orthopaedic Surgery
Robert A. Robinson Professor of Orthopaedic Surgery
Director, Department of Orthopaedic Surgery
Orthopaedist-in-Chief, The Johns Hopkins Hospital

Expertise, Disease and Conditions: Amputation, Foot and Ankle, Orthopaedic Surgery, Orthopaedics

Research Interests: Lower Extremity Trauma Outcomes, Post-Traumatic Osteoarthritis, Orthopaedic Rehabilitation

Erik Anton Hasenboehler, M.D.

Assistant Professor of Orthopaedic Surgery

Expertise, Disease and Conditions: Bone Fractures, Fracture surgery, Fractures, Hip Replacement, Lower Extremity Trauma, Malunions, Nonunions, Orthopaedic Surgery, Orthopaedics, Osteomyelitis, Pelvis Trauma Fracture, Periarticular Fracture, Tibial Fracture, Trauma, Trauma and Post Traumatic Reconstruction, Trauma Surgery, Upper Extremity Trauma

Research Interests: Orthopaedic rehabilitation, Post-traumatic osteoarthritis, Lower extremity trauma outcomes

Lynne C. Jones, M.S., Ph.D.

Associate Professor of Orthopaedic Surgery
Director, Center for Osteonecrosis Research and Education
Director of Resident Research
Director, Hip & Knee Surgery Research

Research Interests: Osteonecrosis, Total Joint Replacement, Bone Graft and Bone Graft Substitutes, Animal models of musculoskeletal disease

Khaled M Kebaish, M.B.B.Ch., M.D., M.S.

Professor of Orthopaedic Surgery
Professor of Neurosurgery
Division Chief, Orthopaedic Spine Surgery
Director, Spine Fellowship Program

Expertise, Disease and Conditions: Cervical Spine Revision Surgery, Deformity spine surgery, Degenerative Disc Disease, Orthopaedic Surgery, Revision Spinal Surgery, Scoliosis, Spinal Tumors, Spine, Spine and Spinal Deformities, Spine Surgery

Research Interests: Disc degeneration and biological repair, Spine biomechanics, Clinical outcomes in spinal deformity

Akhil Jay Khanna, M.D.

Professor of Orthopaedic Surgery
Professor of Biomedical Engineering
Professor of Neurosurgery
Vice Chair, Orthopaedic Surgery
Pradan Endowed Chair of Spine Surgery

Expertise, Disease and Conditions: Back Disorders, Back Pain, Brain Cancer, Cervical Degenerative Disc Disease, Cervical Degenerative Disc Herniation, Cervical Disc Herniation, Cervical Myelopathy, Cervical Radiculopathy, Cervical Spine Trauma, Degenerative Disc Disease, Degenerative Spine Disease, Gastroesophageal Junction Cancer, Herniated Disc, Lumbar Degenerative Disease, Lumbar Disc Herniation, Lumbar Radiculopathy, Minimally Invasive Spine Surgery, Orthopaedic Surgery, Orthopaedics, Scoliosis, Spinal Decompression, Spinal Deformities, Spinal Disorders, Spinal Fixation, Spinal Fusion, Spinal Instability, Spinal Pain, Spinal Reconstruction, Spinal Stenosis, Spinal Trauma, Spine, Spine Surgery, Spondylolisthesis

Research Interests: Minimally Invasive Spine Surgery, Spine Biomechanics, Outcomes after Spine Surgery, Advanced Musculoskeletal and Spine Imaging, Osteoporosis, Advanced Image Guidance Techniques for Spine Surgery

Harpal Singh Khanuja, M.D.

Associate Professor of Orthopaedic Surgery
Chief, Adult Reconstruction - Hip and Knee Replacement
Chief, Department of Orthopaedic Surgery, Johns Hopkins Bayview

Expertise, Disease and Conditions: Avascular Necrosis (AVN) of the Hip, Avascular Necrosis (AVN) of the Knee, Core Decompression for Avascular Necrosis of the Hip, Degenerative Joint Disease (Osteoarthritis of the Hip), Hip Arthritis, Hip Conditions, Hip Dislocations, Hip Fractures, Hip Impingement, Hip Injuries, Hip Replacement, Knee Arthritis, Knee Injuries, Knee Replacement, Knee Surgery, Orthopaedic Surgery, Osteochondritis Dissecans of the Knee, Partial Knee Replacement, Revision Hip Surgery, Revision Knee with Tibial Tubercle Osteotomy, Septic Arthritis of the Knee, Total Hip Replacement, Total Joint Replacement, Total Knee Replacement

Research Interests: Joint replacement technologies, Patient safety, Computer-assisted surgery, Osteonecrosis, Cartilage repair

Dawn LaPorte, M.D.

Professor of Orthopaedic Surgery
Vice Chairman, Education
Residency Program Director, Orthopaedic Surgery

Expertise, Disease and Conditions: Arthritis of the Fingers, Arthritis of the Hand, Arthritis of the Wrist, Avascular Necrosis (AVN) of the Hand and Wrist, Carpal Injuries, Carpal Tunnel Syndrome, Cubital Tunnel Syndrome, Dupuytren's Contracture, Hand Conditions, Hand Reconstruction, Hand Surgery, Nerve Compression, Orthopaedic Hand Surgery, Orthopaedic Surgery, Orthopaedics, Peripheral Nerve Disorders, Rheumatoid Arthritis, Tendon Transfer, Tendonitis of the Elbow, Tendonitis of the Fingers, Tendonitis of the Hand and Wrist, Tennis Elbow, Ulnar Neuropathy, Upper Extremity Reconstruction

Research Interests: Resident education, Wrist innervation, Wrist pain, Triangular fibrocartilage complex (TFCC) tears, Peripheral nerve

Rushyuan Jay Lee, M.D.

Assistant Professor of Orthopaedic Surgery
Director, Pediatric Orthopaedic Fellowship

Expertise, Disease and Conditions: ACL Reconstruction, Ankle Injuries, Arthroscopic Surgery, Discoid Meniscus, Elbow Injuries, Growth Plate and Physeal-Sparing ACL Reconstruction, Knee Dislocations, Knee Injuries, Lateral Collateral Ligament Tears (LCL) Injury, Leg Length Inequality, Loose Body Removal (Knee), Medial Collateral Ligament Tears (MCL) Injury, Medial Patellar Femoral Ligament (MPFL) Injury, Meniscus Tears, Multi-Ligament Knee Injuries, Orthopaedic Surgery, Orthopaedics, Osteochondral Defects, Osteochondral Lesions, Osteochondritis Dissecans of the Knee, Patellar Dislocations, Patellar Instability Stabilization, Pediatric ACL Reconstruction, Shoulder Dislocations, Shoulder Disorders, Shoulder Instability Stabilization Surgery, Shoulder Labral Tear, Sports Injuries, Superior Labrum Anterior and Posterior (SLAP) Lesions, Tear - Anterior Cruciate Ligament (ACL), Tear - Posterior Cruciate Ligament (PCL), Tibial Spine/Eminence Fracture

Research Interests: ACL tears, Injuries in Young Athletes, Fractures, Multi-Ligament Knee Injuries, Patellar Dislocations and Instability, Meniscus Tears and Discoid Meniscus, Osteochondritis Dissecans, Arthroscopy, Fracture Care

Adam Scott Levin, M.D.

Associate Professor of Orthopaedic Surgery
Associate Professor of Oncology

Expertise, Disease and Conditions: Benign Tumors, Bone Sarcoma, Bone Tumors, Metastatic Bone Disease, Metastatic Disease, Orthopaedic Oncology, Orthopaedic Surgery, Orthopaedics, Sarcoma, Sarcoma and Musculoskeletal Tumors, Soft Tissue Sarcoma, Soft Tissue Tumors

Research Interests: Nanotechnology and Novel Drug Delivery Platforms for Bone Tumors, Metastatic Bone Disease, Sarcoma

Edward George McFarland, M.D.

Professor of Orthopaedic Surgery
Wayne H. Lewis Professor of Orthopaedic and Shoulder Surgery
Director, Division of Shoulder Surgery

Expertise, Disease and Conditions: Anterior Shoulder Instability, Arthritis of the Shoulder, Baseball Injuries, Elbow Injuries, Elbow UCL Reconstruction, Joint Replacement, Orthopaedic Shoulder Surgery, Orthopaedic Surgery, Orthopaedic Trauma, Pediatric and Adolescent Sports Injuries, Rotator Cuff, Rotator Cuff Injuries, Shoulder Arthroscopy, Shoulder Dislocations, Shoulder Disorders, Shoulder Fractures, Shoulder Instability Stabilization Surgery, Shoulder Joint Dislocations, Shoulder Labral Tear, Shoulder Replacement, Shoulder Surgery, Sports Injuries, Sports Injuries to the Shoulder, Superior Labrum Anterior and Posterior (SLAP) Lesions, Tendonitis of the Elbow, Tennis Elbow, Total Elbow Replacement

Research Interests: Sports shoulder injuries, Shoulder replacement surgery, primary and revision surgery, Examination of the shoulder, Epidemiology of shoulder injuries, Injuries to athlete elbow

Carol Diane Morris, M.D., M.S.

Professor of Orthopaedic Surgery
Associate Professor of Surgery
Professor of Oncology
Division Chief, Orthopaedic Oncology
Vice Chair, Clinical Operations, Orthopaedic Surgery

Expertise, Disease and Conditions: Bone Cancer, Bone Sarcoma, Bone Tumors, Chondrosarcoma, Ewing's Sarcoma, Metastatic Bone Disease, Orthopaedic Oncology, Orthopaedic Surgery, Osteosarcoma, Pathologic Fractures, Sarcoma, Sarcoma and Musculoskeletal Tumors, Soft Tissue Sarcoma, Soft Tissue Tumors

Research Interests: sarcoma, complex limb reconstruction

Brian James Neuman, M.D.

Assistant Professor of Orthopaedic Surgery

Expertise, Disease and Conditions: Cervical Myelopathy, Cervical Radiculopathy, Cervical Spine Revision Surgery, Degenerative Spine Disease, Kyphosis, Lumbar Degenerative Disease, Lumbar Disc Herniation, Lumbar Radiculopathy, Lumbar Spine Diseases, Minimally Invasive Spine Surgery, Orthopaedic Surgery, Radiculopathy, Revision Spinal Surgery, Scoliosis, Spinal Decompression, Spinal Deformities, Spinal Fusion, Spinal Stenosis, Spinal Trauma, Spine Surgery

Research Interests: Clinical outcomes after reconstructive spinal deformity surgery, Adjacent segment disease, Sagittal imbalance

Greg Michael Osgood, M.D.

Associate Professor of Orthopaedic Surgery
Chief, Orthopaedic Trauma, Department of Orthopaedic Surgery

Expertise, Disease and Conditions: Femoral Fractures, Hip Conditions, Hip Dislocations, Hip Fractures, Lower Extremity Trauma, Orthopaedic Surgery, Orthopaedics, Pelvic Reconstruction, Trauma and Post Traumatic Reconstruction, Trauma Surgery

Photo of Dr. Lee Hunter Riley, III, M.D.

Lee Hunter Riley, M.D. III

Professor of Orthopaedic Surgery
Professor of Neurosurgery
Chief Medical Officer, Musculoskeletal Service Line
Vice Director, Clinical Operations
Zadek Family Professorship in Orthopaedic Surgery

Expertise, Disease and Conditions: Cervical Degenerative Disc Disease, Cervical Degenerative Disc Herniation, Cervical Spondylosis, Degenerative Spine Disease, Lumbar Degenerative Disease, Lumbar Disc Herniation, Lumbar Spine Diseases, Orthopaedic Surgery, Spine, Spine and Spinal Deformities, Spine Surgery, Spine Tumors, Spondylolisthesis

Research Interests: Cervical spine disorder, Vertebroplasty, Metastatic disease, Disc degeneration

Richard Andrew Schaefer, M.D., M.P.H.

Assistant Professor of Orthopaedic Surgery

Expertise, Disease and Conditions: Benign Tumors, Bone Fractures, Bursitis, Elbow Injuries, Hip Bursitis, Joint Pain, Knee Injuries, Knee Joint Arthroscopy, Knee Surgery, Lipoma, Musculoskeletal Tumors Involving the Extremities, Orthopaedic Surgery, Pediatric and Adolescent Sports Injuries, Sports Injuries, Sports Injuries to the Ankle

Babar Shafiq, M.D., M.S.

Assistant Professor of Orthopaedic Surgery
Director, Orthopaedic Bone Health Center

Expertise, Disease and Conditions: Acetabulum Injuries, Distal Radius Fracture, Femoral Fractures, Fractures, Hip Fractures, Malunions, Nonunions, Orthopaedic Surgery, Orthopaedic Trauma, Shoulder Fractures, Tibial Fracture

Research Interests: Periarticular imaging, Pelvic and Acetabulum fracture repair, Ankle/syndesmotic fractures

Photo of Dr. Richard Leroy Skolasky, Jr., M.A., Sc.D.

Richard Leroy Skolasky, M.A., Sc.D. Jr.

Associate Professor of Orthopaedic Surgery
Associate Professor of Physical Medicine and Rehabilitation
Director, Spine Outcomes Research Center

Research Interests: Spine biomechanics, Psycho-social determinates of health, Health disparities, Health services research, Functional outcomes of spine surgery

Paul David Sponseller, M.D.

Professor of Orthopaedic Surgery
Professor of Urology
Chief, Division of Pediatric Orthopaedics
Sponseller Professor of Pediatric Orthopaedics

Expertise, Disease and Conditions: Achondroplasia, Blount's Disease, Cerebral Palsy, Fractures, Hip Dislocations, Hip Dysplasia, Kyphosis, Leg Length Inequality, Marfan Syndrome, Orthopaedic Surgery, Orthopaedics, Osteogenesis Imperfecta, Osteomyelitis, Pediatric Orthopaedic Surgery, Pediatric Orthopaedics, Pediatric Spinal Deformity, Scoliosis, Skeletal Dysplasias, Spina Bifida, Spinal Fixation, Spinal Fusion, Spine and Spinal Deformities, Spondylolisthesis, Spondylosis

Research Interests: Marfan Syndrome, Pediatric Spinal Deformity, Bladder exstrophy, Pediatric skeletal trauma

Umasuthan Srikumaran, M.D.

Associate Professor of Orthopaedic Surgery
Chair, Johns Hopkins Orthopaedic Surgery at Howard County General Hospital
Director, Shoulder Fellowship

Expertise, Disease and Conditions: Anterior Shoulder Instability, Arthritis, Arthritis of the Shoulder, Arthroscopic Rotator Cuff Repair, Arthroscopic Surgery, Baseball Injuries, Bone Surgery, Fractures, Joint Diseases, Joint Pain, Joint Surgery, Minimally Invasive Surgery, Orthopaedic Shoulder Surgery, Orthopaedic Surgery, Orthopaedics, Platelet-Rich Plasma, Rotator Cuff, Rotator Cuff Injuries, Shoulder Arthroscopy, Shoulder Dislocations, Shoulder Disorders, Shoulder Fractures, Shoulder Instability Stabilization Surgery, Shoulder Joint Dislocations, Shoulder Labral Tear, Shoulder Replacement, Shoulder Surgery, Shoulder Ultrasound, Sports Injuries, Sports Injuries to the Shoulder, Sports Medicine, Tendon Surgery, Torn Cartilage, Total Joint Replacement, Upper Extremity, Upper Extremity Surgery

Research Interests: Disorders of the shoulder, clinical outcomes, value analysis research

Robert Steven Sterling, M.D.

Associate Professor of Orthopaedic Surgery
Director, Adult Hip and Knee Replacement Fellowship

Expertise, Disease and Conditions: Avascular Necrosis (AVN) of the Hip, Knee Arthritis, Orthopaedic Surgery, Orthopaedics, Revision Hip Surgery, Revision Knee Surgery, Total Hip Replacement, Total Joint Replacement, Total Knee Replacement

Ranjit Abraham Varghese, M.B.B.S.

Assistant Professor of Orthopaedic Surgery
Medical Director, Arthrogryposis Clinic
Medical Director, Ortho-Cerebral Palsy Program, Kennedy Krieger Institute

Expertise, Disease and Conditions: Angular Deformity Legs, Arthrogryposis, Blount's Disease, Bone Fractures, Cerebral Palsy, Clubfeet, Congenital Foot Disorders, Foot Deformities, Genu Valgum, Genu Varum, Hip Dysplasia, Neuromuscular Disease, Orthopaedic Surgery, Osteogenesis Imperfecta, Osteomyelitis, Pediatric Connective Tissue Disorders, Pediatric Foot Care, Perthes Disease, Polydactyly (extra fingers), Slipped Capital Femoral Epiphysis (SCFE), Spasticity, Spina Bifida, Syndactyly-Webbed Fingers

Research Interests: Outcomes evaluation, Hip disorders, Cerebral palsy

Bashir Ahmed Zikria, M.D.

Associate Professor of Orthopaedic Surgery

Expertise, Disease and Conditions: ACL Reconstruction, Anterior Shoulder Instability, Arthroscopic Rotator Cuff Repair, Baseball Injuries, Elbow Arthroscopy, Joint Preservation, Knee Arthritis, Multi-Ligament Knee Injuries, Orthopaedic Surgery, Sports Medicine, Total Elbow Replacement

Research Interests: Sports medicine injuries, Pediatric sports, Knee injuries, Sports injuries