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Journal Articles

Comparing Patellofemoral Kinematics Assessed With a Novel Muscle Actuator System and an Oxford Rig Using Noncadaveric Knees

Alexandre Galley, Samira Vakili, Ilya Borukhov, Brent Lanting, Stephen J. Piazza, Ryan Willing
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. March 2025, 147(3): 031003.
Paper No: BIO-24-1210
https://doi.org/10.1115/1.4067400
Published Online: January 17, 2025
View Article titled, Comparing Patellofemoral Kinematics Assessed With a Novel Muscle Actuator System and an Oxford Rig Using Noncadaveric Knees
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Topics: Actuators, Kinematics, Knee, Muscle, Phantoms, Tendons, Testing, Gravity (Force), Errors, Knee joint prostheses
Journal Articles

Dynamic Weighted Bar for Upper Limb Rehabilitation

Taylor C. Hornung, Stephen J. Piazza, Everett C. Hills, Jason Z. Moore
Journal: Journal of Medical Devices
Publisher: ASME
Article Type: Technical Briefs
J. Med. Devices. December 2016, 10(4): 044503.
Paper No: MED-15-1271
https://doi.org/10.1115/1.4033451
Published Online: August 5, 2016
View Article titled, Dynamic Weighted Bar for Upper Limb Rehabilitation
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Topics: Design, Patient treatment, Sensors, Weight (Mass), Center of mass, Robotics, Biomedicine, Feedback
Journal Articles

Minimizing Human Tracking Error for Robotic Rehabilitation Device

Andrew J. Homich, Megan A. Doerzbacher, Eric L. Tschantz, Stephen J. Piazza, Everett C. Hills, Jason Z. Moore
Journal: Journal of Medical Devices
Publisher: ASME
Article Type: Research-Article
J. Med. Devices. December 2015, 9(4): 041003.
Paper No: MED-14-1253
https://doi.org/10.1115/1.4030275
Published Online: August 6, 2015
View Article titled, Minimizing Human Tracking Error for Robotic Rehabilitation Device
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Topics: Control equipment, Design, Errors, Filters, Rehabilitation devices, Robotics, Magnetometers, Sensors, Simulation
Proceedings Papers

Robotic Rehabilitation Device and Patient Orientation Estimation

Andrew J. Homich, Megan A. Doerzbacher, Stephen J. Piazza, Everett C. Hills, Jason Z. Moore
Proc. ASME. IDETC-CIE2014, Volume 5A: 38th Mechanisms and Robotics Conference, V05AT08A022, August 17–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DETC2014-35472
https://doi.org/10.1115/DETC2014-35472
View Paper titled, Robotic Rehabilitation Device and Patient Orientation Estimation
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Topics: Rehabilitation devices, Robotics, Filters, Design, Magnetometers
Proceedings Papers

On the Use of Induced End Effector Force Analysis for Determining Muscle Roles During Movement

Stephen J. Piazza, Vladimir M. Zatsiorsky
Proc. ASME. SBC2007, ASME 2007 Summer Bioengineering Conference, 35-36, June 20–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: SBC2007-176695
https://doi.org/10.1115/SBC2007-176695
View Paper titled, On the Use of Induced End Effector Force Analysis for Determining Muscle Roles During Movement
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Topics: End effectors, Muscle, Torque, Linkages, Surgery
Proceedings Papers

Effects of Muscle Moment Arm Variation on Performance During the Acceleration Phase of Sprinting: A Computer Simulation Study

Stephen J. Piazza
Proc. ASME. SBC2009, ASME 2009 Summer Bioengineering Conference, Parts A and B, 1219-1220, June 17–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: SBC2009-206772
https://doi.org/10.1115/SBC2009-206772
View Paper titled, Effects of Muscle Moment Arm Variation on Performance During the Acceleration Phase of Sprinting: A Computer Simulation Study
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Topics: Computer simulation, Muscle, Fibers, Impulse (Physics), Physiology
Proceedings Papers

Dual-Joint Modeling for Estimation of Total Knee Replacement Contact Forces During Locomotion

Michael W. Hast, Stephen J. Piazza
Proc. ASME. SBC2011, ASME 2011 Summer Bioengineering Conference, Parts A and B, 233-234, June 22–25, 2011
Publisher: American Society of Mechanical Engineers
Paper No: SBC2011-53948
https://doi.org/10.1115/SBC2011-53948
View Paper titled, Dual-Joint Modeling for Estimation of Total Knee Replacement Contact Forces During Locomotion
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Topics: Arthroplasty, Contact mechanics, Cycles, Design, Experimental methods, Knee joint prostheses, Modeling, Stress, Surgery
Proceedings Papers

Improved Simulation of Heel Contact During Normal Walking

Arash Mahboobin, Rakié Cham, Stephen J. Piazza
Proc. ASME. SBC2011, ASME 2011 Summer Bioengineering Conference, Parts A and B, 273-274, June 22–25, 2011
Publisher: American Society of Mechanical Engineers
Paper No: SBC2011-53453
https://doi.org/10.1115/SBC2011-53453
View Paper titled, Improved Simulation of Heel Contact During Normal Walking
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Topics: Simulation, Biomechanics, Computer simulation, Dynamic systems, Dynamics (Mechanics), Human factors
Journal Articles

Simulation of Aperiodic Bipedal Sprinting

Huseyin Celik, Stephen J. Piazza
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. August 2013, 135(8): 081008.
Paper No: BIO-12-1567
https://doi.org/10.1115/1.4024577
Published Online: June 12, 2013
View Article titled, Simulation of Aperiodic Bipedal Sprinting
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Topics: Optimal control, Optimization, Simulation, Nonlinear programming, Actuators
Journal Articles

Dual-Joint Modeling for Estimation of Total Knee Replacement Contact Forces During Locomotion

Michael W. Hast, Stephen J. Piazza
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. February 2013, 135(2): 021013.
Paper No: BIO-12-1441
https://doi.org/10.1115/1.4023320
Published Online: February 7, 2013
View Article titled, Dual-Joint Modeling for Estimation of Total Knee Replacement Contact Forces During Locomotion
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Topics: Cycles, Knee, Modeling, Muscle, Simulation, Stress, Knee joint prostheses, Optimization, Errors, Kinematics
Journal Articles

The Sprinter's Foot

Stephen J. Piazza
Journal: Mechanical Engineering
Publisher: ASME
Article Type: Select Article
Mechanical Engineering. October 2009, 131(10): 24–28.
https://doi.org/10.1115/1.2009-OCT-1
Published Online: October 1, 2009
View Article titled, The Sprinter's Foot
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Topics: Levers, Muscle, Rotation, Tendons, Fibers, Graduate students, Ultrasound
Proceedings Papers

Functional Location of Subject-Specific Joint Axes of the Human Ankle Complex

Gregory S. Lewis, Stephen J. Piazza
Proc. ASME. IMECE2004, Advances in Bioengineering, 379-380, November 13–19, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2004-59611
https://doi.org/10.1115/IMECE2004-59611
View Paper titled, Functional Location of Subject-Specific Joint Axes of the Human Ankle Complex
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Topics: Errors, Linkages, Musculoskeletal system, Optimization, Orthopedics
Journal Articles

In Vitro Assessment of a Motion-Based Optimization Method for Locating the Talocrural and Subtalar Joint Axes

Gregory S. Lewis, H. J. Sommer, III, Stephen J. Piazza
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. August 2006, 128(4): 596–603.
https://doi.org/10.1115/1.2205866
Published Online: January 17, 2006
View Article titled, In Vitro Assessment of a Motion-Based Optimization Method for Locating the Talocrural and Subtalar Joint Axes
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Topics: Linkages, Optimization, Bone, Computers
Journal Articles

Changes in Foot Loading Following Plantar Fasciotomy: A Computer Modeling Study

Ahmet Erdemir, Ph.D., Stephen J. Piazza, Ph.D.
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. April 2004, 126(2): 237–243.
https://doi.org/10.1115/1.1691447
Published Online: May 4, 2004
View Article titled, Changes in Foot Loading Following Plantar Fasciotomy: A Computer Modeling Study
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Topics: Arches, Computer simulation, Muscle, Simulation, Stress, Surgery, Excitation, Engineering simulation, Modeling, Dynamics (Mechanics)
Journal Articles

Three-Dimensional Dynamic Simulation of Total Knee Replacement Motion During a Step-Up Task

Stephen J. Piazza, Scott L. Delp
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. December 2001, 123(6): 599–606.
https://doi.org/10.1115/1.1406950
Published Online: July 31, 2001
View Article titled, Three-Dimensional Dynamic Simulation of Total Knee Replacement Motion During a Step-Up Task
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Topics: Knee, Knee joint prostheses, Muscle, Simulation, Kinematics, Modeling, Artificial limbs