Todd Johnson
Papers
2
Total Citations
148
H-Index
2
About
Todd Johnson is a leading figure in orthopaedic biomechanics, whose work has fundamentally advanced our understanding of total knee arthroplasty (TKA) failure mechanisms and the fidelity of preclinical testing. His research centers on the kinematics of both healthy and replaced knees, with a particular focus on the subtle interactions between implant components that can lead to long-term complications. In his highly cited 2004 study (75 citations), Johnson was the first to systematically identify and characterize anterior tibial post impingement in posterior stabilized TKA designs, revealing that wear and deformation on the anterior post—previously overlooked—could compromise implant longevity. This finding reshaped design criteria for modern knee implants. Complementing this, his 2009 work (73 citations) provided a critical benchmark by rigorously comparing two dominant in vitro testing platforms—the Oxford knee rig and robotic knee testing systems—demonstrating their ability to capture characteristic kinematic differences between healthy and TKA knees. This study remains a cornerstone for researchers validating experimental setups. Johnson’s contributions have directly influenced implant design, surgical technique, and regulatory testing standards, cementing his reputation as a meticulous investigator whose work bridges engineering principles and clinical outcomes.
Research Focus
Key Achievements
Top Papers
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