Steven Irby

As an engineer I have spent over 20 years in support of clinical and research orthopedic biomechanics and associated technologies.

  • 1994 MS Mechanical Engineering Design, San Diego State University
  • 1985 BS Bioengineering, University of California San Diego

  • Quantification of human physical performance & mechanical engineering design

  • Irby SE.  “ A Digital Logic Controlled Electromechanical Free-Knee Brace”.  MS Thesis, San Diego State University, San Diego, CA 1994.
  • Kaufman KR, SE Irby, DW Ussel, RW Wirta, JW Mathewson, DH Sutherland.  Energy Efficient Long-Leg Brace.  Gait & Posture 3(2):99, 1995.
  • Irby SE, Sutherland DH, Kaufman KR, Wirta R, Ussell D, Mathewson JW, Mason R.  Digital Logic Controlled Electromechanical Long-Leg Brace.  Proceedings of Technology for Persons with Disabilities Conference, California State University, Northridge, CA.  March 14-18, 1995.
  • Irby SE, Kaufman KR.  A Digital Logic Controlled Electromechanical Long Leg Brace.  Proceedings of the International Mechanical Engineering Congress and Exposition, San Francisco, CA.  November 12-17, 1995.
  • Kaufman KR, Irby SE, Mathewson JW, Wirta RW, Sutherland DH.  Energy efficient knee-ankle-foot orthosis:  A case study.  J Pros Orthot, 8(3):79-85, 1996.
  • Kaufman KR, Kovacevic N, Irby SE, Colwell CW. Instrumented implant for measuring tibiofemoral forces. J Biomech. 1996 May;29(5):667-71.
  • Irby, SE, KR Kaufman, JW Mathewson, and DH Sutherland, Automatic Control Design for a Dynamic Knee Brace System.  IEEE Trans Rehab Engr, 7:135-139, 1999
  • Irby, SE, KR Kaufman, and R Wirta, Optimization and Application of a Wrap Spring Clutch to a Dynamic Knee-Ankle-Foot Orthosis. IEEE Trans Rehab Engr, 7:130-134, 1999
  • Kaufman KR, Irby SE, Basford JR, Sutherland DH.  Advanced design concepts for a knee-ankle-foot orthosis.  In Intelligent Systems and Technologies in Rehabilitation Engineering, Teodorescu H-N L, Jain LC (Editors), C R C Press, pp. 449-470, 2000.
  • Irby SE, Bernhardt KA, Kaufman KR.  Fatigue test device for stance phase control knee orthoses.  Journal of Prosthetics and Orthotics, 15(4):143-147, 2003.
  • Smith J, Padgett DJ, Dahm DL, Kaufman KR, Harrington SP, Morrow DA, Irby SE.
  • Electromyographic activity in the immobilized shoulder girdle musculature during contralateral upper limb movements. J Shoulder Elbow Surg. 2004 Nov-Dec;13(6):583-8.
  • Smith J, Padgett DJ, Kaufman KR, Harrington SP, An KN, Irby SE.  Rhomboid muscle electromyography activity during 3 different manual muscle tests.   Arch Phys Med Rehabil. 2004 Jun;85(6):987-92.

  • First Place Award winner of the Master's Level Student Design Competition of the ASME International Conference, Bioengineering Division, San Francisco, CA, 1995.
  • Irby SE and Kaufman KR, “Electromechanical joint control device with wrap spring clutch” US Patent 6,500,138.  Issued December 31, 2002.
  • Irby SE and Kaufman KR, “Electromechanical joint control device with wrap spring clutch” US Patent 6,834,752.  Issued December 18, 2004.