Darrell Goertzen

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About

Darrell Goertzen is a researcher whose work sits at the critical intersection of robotics and biomechanics, with a primary focus on spinal mechanics and manual therapy. His major contributions center on developing novel robotic systems to quantify the mechanical loads applied to spinal tissues during clinical procedures. In his most cited work, "A novel application of velocity-based force control for use in robotic biomechanical testing" (2009, 32 citations), Goertzen introduced an innovative control methodology that enables precise, repeatable force application—a significant advancement for biomechanical testing. His follow-up study, "Identification of Spinal Tissues Loaded by Manual Therapy" (2010, 23 citations), employed a serial dissection of porcine motion segments under robotic control to directly identify which spinal tissues are loaded during manipulation and mobilization, and to what magnitude. This work provided the first quantitative, tissue-level evidence for the mechanical effects of manual therapy, challenging long-held theoretical assumptions. Goertzen’s research has been instrumental in bridging the gap between engineering control theory and clinical practice, offering a rigorous, evidence-based foundation for understanding how manual therapies mechanically interact with the spine.