World's Best Scientists 2026 revealed!

D-Index & Metrics

Engineering and Technology

D-Index
61
Citations
15914
World Ranking
2015
National Ranking
642

Overview

What is he best known for?

The fields of study he is best known for:

  • Mechanical engineering
  • Structural engineering
  • Surgery

James D. Ralph mainly focuses on Structural engineering, Composite material, Pedicle screw, Screw head and Motion preservation. In the subject of general Structural engineering, his work in Nut is often linked to Spacer device, thereby combining diverse domains of study. His work in Composite material covers topics such as Engineering drawing which are related to areas like Ball, Compression, Orthopedic implant and Varying thickness.

He has included themes like Threading and Collar in his Screw head study. As a part of the same scientific family, he mostly works in the field of Collar, focusing on Lock and, on occasion, Transverse plane, Bone screws and Fixation. His research integrates issues of Coupling and Screw in his study of Head.

His most cited work include:

  • Surgical fasteners and related implant devices having bioabsorbable components (647 citations)
  • Polyaxial pedicle screw having a threaded and tapered compression locking mechanism (412 citations)
  • Threaded polyaxial locking screw plate assembly (410 citations)

What are the main themes of his work throughout his whole career to date?

His scientific interests lie mostly in Structural engineering, Head, Composite material, Anatomy and Biomedical engineering. His Spring study, which is part of a larger body of work in Structural engineering, is frequently linked to Spacer device, bridging the gap between disciplines. The concepts of his Head study are interwoven with issues in Hook, Implant and Fixation.

His work in Composite material tackles topics such as Engineering drawing which are related to areas like Pedicle screw. His work in the fields of Anatomy, such as Skull and Intervertebral space, intersects with other areas such as Geology. Bone cutting is closely connected to Bone drilling in his research, which is encompassed under the umbrella topic of Biomedical engineering.

He most often published in these fields:

  • Structural engineering (45.67%)
  • Head (18.90%)
  • Composite material (18.11%)

What were the highlights of his more recent work (between 2005-2012)?

  • Biomedical engineering (15.75%)
  • Surgery (9.45%)
  • Autologous bone (4.72%)

In recent papers he was focusing on the following fields of study:

Biomedical engineering, Surgery, Autologous bone, Skull and Structural engineering are his primary areas of study. His Biomedical engineering research incorporates themes from Bone drilling, Drilling, Rotation and Implant. The various areas that he examines in his Implant study include Plastic materials, STAPLE DRIVER, Head and Self locking.

His biological study spans a wide range of topics, including Bone plate, Composite material and Groove. Composite material is frequently linked to Engineering drawing in his study. His study in the field of Cranial bone and Replantation is also linked to topics like Geology.

Between 2005 and 2012, his most popular works were:

  • Surgical fasteners and related implant devices having bioabsorbable components (647 citations)
  • Intervertebral spacer device (209 citations)
  • Adjustable bone plate (76 citations)

In his most recent research, the most cited papers focused on:

  • Mechanical engineering
  • Structural engineering
  • Surgery

James D. Ralph mainly investigates Implant, Dentistry, Biomedical engineering, Bone growth and Bone plate. The study incorporates disciplines such as STAPLE DRIVER, Surgical Fasteners, Head and Self locking in addition to Implant. His studies in Dentistry integrate themes in fields like Bone healing, Orthodontics, Bone screws and Clavicle.

His Biomedical engineering study frequently links to adjacent areas such as Plastic materials. His Bone plate study combines topics from a wide range of disciplines, such as Bending, Structural engineering, Process and Bone fixation. His research on Musculoskeletal trauma often connects related topics like Composite material.

Best Publications

  • Surgical fasteners and related implant devices having bioabsorbable components

    James D Ralph;Stephen L Tatar;Thomas N Troxell

  • Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

    James D. Ralph;Stephen Tatar

  • Rod securing polyaxial locking screw and coupling element assembly

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

  • Polyaxial pedicle screw

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

  • Polyaxial pedicle screw having a rotating locking element

    James D. Ralph;Stephen Tatar

  • A modular polyaxial locking pedicle screw

    Joseph P. Errico;Thomas J. Errico;James D. Ralph;Steven Tatar

  • Intervertebral spacer device having a slotted domed arch strip spring

    James D. Ralph;Stephen Tatar;Joseph P. Errico

  • Selectively expandable sacral fixation screw-sleeve device

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

  • Polyaxial mechanism for use with orthopaedic implant devices

    James D. Ralph;Steven Tatar

  • ARTIFICIAL INTERVERTEBRAL DISC HAVING CAPTURED BALL-SOCKET JOINT

    Errico Joseph P;Dudasik Michael;Zubok Rafail;Ralph James D

  • Polyaxial pedicle screw having a compression locking rod gripping mechanism

    Joseph P. Errico;Thomas J. Errico;James D. Ralph;Stephen Tatar

  • Intervertebral spacer device having a wave washer force restoring element

    James D. Ralph;Stephen Tatar;Joseph P. Errico

  • Polyaxial locking screw and coupling element

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

  • Advanced polyaxial locking screw and coupling element device for use with rod fixation apparatus

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

  • Side mounted polyaxial pedicle screw

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

  • Polyaxial locking screw and coupling element assembly for use with side loading rod fixation apparatus

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

  • Advanced polyaxial locking hook and coupling element device for use with side loading rod fixation devices

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

  • Porous interbody fusion device having integrated polyaxial locking interference screws

    Thomas J. Errico;James D. Ralph;Joseph P. Errico

  • Longitudinal plate assembly having an adjustable length

    James D. Ralph;Stephen Tatar

  • Polyaxial locking screw and coupling element assembly for use with rod fixation apparatus

    Joseph P. Errico;Thomas J. Errico;James D. Ralph

Frequent Co-Authors

Joseph P. Errico
Joseph P. Errico ElectroCore Inc.

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