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Recent Publications

1. Barrios, J.A., Davis, I.S., Higginson, J.S. and Royer, T.D. “Lower extremity walking mechanics of young individuals with asymptomatic varus knee alignment.” Journal of Orthopaedic Research. April 2009. (In Press) doi:10.1002/jor.20904
2. Zeni, Jr., J.A. and Higginson, J.S. “Differences in gait parameters between healthy subjects and persons with moderate and severe knee osteoarthritis: a result of altered walking speed?” Clinical Biomechanics 24: 372-378, 2009. doi:10.1016/j.clinbiomech.2009.02.001
3. Zeni, Jr., J.A. and Higginson, J.S. “Dynamic knee joint stiffness in subjects with a progressive increase in severity of knee osteoarthritis”. Clinical Biomechanics 24: 366-371, 2009. doi:10.1016/j.clinbiomech.2009.01.005
4. Zeni, Jr., J.A., Rudolph, K.S. and Higginson, J.S. “Alterations of quadriceps and hamstring coordination in persons with medial compartment knee osteoarthritis”. Journal of Electromyography and Kinesiology. December 2008. (In Press) doi:10.1016/j.jelekin.2008.12.003
5. Xiao, M. and Higginson, J. “Muscle function may depend on model selection in forward simulation of normal walking.” J Biomech 41: 3236-3242, 2008. http://dx.doi.org/10.1016/j.jbiomech.2008.08.008
6. Zifchock, R.A., Davis, I., Higginson, J., Royer, R.  “Side-to-side differences in overuse running injury susceptibility: a retrospective study.”  Human Movement Science 27: 888-902, 2008.
7. Crabtree, C.A. and Higginson, J.S. “Modeling neuromuscular effects of ankle foot orthoses (AFOs) in computer simulations of gait.” Gait and Posture 29(1): 65-70, 2009. http://dx.doi.org/10.1016/j.gaitpost.2008.06.004
8. Zifchock, R.A., Davis, I., Higginson, J., Royer, R.  “The Symmetry Angle: A Novel, Robust Method of Quantifying Asymmetry.”  Gait and Posture 27(4): 622-627, 2008.
9. Zeni Jr., J.A., Richards, J.G. and Higginson, J.S. “Two simple methods for determining gait events during treadmill and overground walking using kinematic data.” Gait and Posture 27(4): 710-714, 2008.
10. Higginson, J.S., Zajac, F.E., Neptune, R.R., Kautz, S.A. & Delp, S.L. “Muscle contributions to support during gait in an individual with post-stroke hemiparesis.” J Biomech 39: 1769-1777, 2006.
11. Higginson, J.S., Zajac, F.E., Kautz, S.A., Neptune, R.R., Burgar, C.G. & Delp, S.L. “Effect of equinus foot placement and intrinsic muscle response on knee extension during stance.” Gait and Posture 23:32-36, 2006.
12. Higginson, J.S., Anderson, F.C. & Neptune, R.R. “Simulated parallel annealing within a neighborhood (SPAN) for optimization of biomechanical systems.” J Biomech 38: 1938-1942, 2005.
13. Hamel, K.A., Okita, N., Higginson, J.S. & Cavanagh, P.R. “Foot clearance during stair descent: effects of age and illumination.” Gait and Posture 21:135-140, 2005.
14. Cavanagh, P.R. & Higginson, J.S. (2002). "What is the Role of Vision During Stair Descent?" In J. Andre, D.A. Owens, & L.O. Harvey, Jr. (Eds.), Visual perception: the influence of H. W. Leibowitz (pp. 213-230). Washington, DC: American Psychological Association.
15. Pohl, P.S., Startzell, J.K., Duncan, P.W. & Wallace, D. "Reliability of lower extremity isokinetic strength testing in adults with stroke." Clinical Rehabilitation 14(6): 601-607, 2000.
16. Startzell, J.K., Owens, D.A., Mulfinger, L.M., & Cavanagh, P.R. "Stair Negotiation in Older People: A Review". Journal of the American Geriatrics Society 48:567-580, 2000.
17. Startzell, J.K. & Cavanagh, P.R. “A three-dimensional approach to the calculation of foot clearance during locomotion.” Human Movement Science 18: 603-611, 1999.
18. Mazzeo, R.S., Cavanagh, P.R., Evans, W.J., Fiatarone, M., Hagberg, J., McAuley, E. & Startzell, J.K. “Exercise and Physical Activity for Older Adults.” (Position Statement for the American College of Sports Medicine) Medicine & Science in Sports & Exercise, 30(6): 992-1008, 1998.
19. Cavanagh, P.R., Mulfinger, L. & Startzell, J.K. “Surviving the Stairs.” Biomechanics. 4(4): 14-20, 1997.

Conference Abstracts

1. Roewer, B. Henderson, C., Reisman, D. & Higginson, J. “Effect of walking speed on mechanical recovery and internal work after stroke.” Gait and Clinical Movement Analysis Society. 2009. (Podium presentation)
2. Kubinski, A.J. & Higginson, J.S. “Kinetics and kinematics of a weighted challenge in individuals with knee osteoarthritis.” Orthopaedic Research Society. 2009.
3. Henderson, C.E., Barrance, P.J. & Higginson, J.S. “Quantification of knee joint contact area using weight-bearing MRI for subjects with osteoarthritis.” Orthopaedic Research Society. 2009.
4. Xiao, M. & Higginson, J. “Effects of asymmetric ankle plantarflexor recruitment on post-stroke walking: a 3D simulation study.” North American Congress on Biomechanics. Ann Arbor, MI, 2008.
5. Hamner, S.R., John, C. T., Anderson, F.C., Higginson, J.S., Delp, S.L. “Reducing residual forces and moments in a three-dimensional simulation of running.” North American Congress on Biomechanics. Ann Arbor, MI, 2008.
6. Xiao, M. & Higginson, J. “Muscle force differences of quadriceps in different walking simulations.” Gait and Clinical Movement Analysis Society 13th Annual Meeting. Richmond, VA, 2008.
7. Higginson, J. & Richards, C. “Why use subject-specific simulations of normal gait?” Gait and Clinical Movement Analysis Society 13th Annual Meeting. Richmond, VA, 2008.
8. John, C. T., Anderson, F.C., Guendelman, E., Higginson, J.S., Delp, S.L. “3D Muscle-Driven Simulations of Walking at Multiple Speeds.” Biomedical Computation at Stanford. Stanford, CA, 2007.
9. Zeni, Jr., J.A. and Higginson, J.S. “Estimation of knee joint compression force in subjects with medial compartment knee osteoarthritis.” NorthEast Regional IDEA Meeting. Burlington, VT, 2007.
10. Kesar, T., Perumal, R., Reisman, D.R., Rudolph, K.S., Farquhar, W., Higginson, J.S. and Binder-Macleod, S.A. “Plantar- and dorsi-flexor FES in conjunction with fast treadmill training: effects on post-stroke walking patterns.” 12 th Annual Conference of the International FES Society. Philadelphia, PA, 2007. (Podium presentation.)
11. Zeni, Jr., J.A. and Higginson, J.S. “Estimation of knee joint compression force in subjects with medial compartment knee osteoarthritis.” Annual Meeting of the American Society of Biomechanics. Stanford, CA, 2007.
12. Xiao, M. and Higginson, J. “Simulation study of walking patterns with knee osteoarthritis using OpenSim”. 2007 Annual Meeting of the American Society of Biomechanics. Stanford, CA, 2007.
13. John, C.T., Anderson, F.C., Guendelman, E., Higginson, J.S. and Delp, S.L. “3D long-duration simulations of multiple speeds of walking”. 2007 Annual Meeting of the American Society of Biomechanics. Stanford, CA, 2007. (Podium presentation.)
14. Higginson, J., Kesar, T., Perumal, R. and Binder-Macleod, S. “Simulation-guided stimulation for paretic ankle muscles during stroke gait.” ASME 2007 Summer Bioengineering Conference. Keystone, CO, 2007. (Podium presentation.)
15. Xiao, M. and Higginson, J. “Comparison of Muscle Function in 2D and 3D Walking Simulation.” ASME 2007 Summer Bioengineering Conference. Keystone, CO, 2007. (Podium presentation.)
16. Zeni, Jr., J. and Higginson, J. “Influence Of Walking Speed And Severity Of Knee Osteoarthritis On Medial Compartment Loading. ASME 2007 Summer Bioengineering Conference. Keystone, CO, 2007.
17. George-Reichley, D. and Higginson, J.S. “An induced acceleration analysis of the effect of hip flexion angle perturbations on the role of hip abductor muscles during the swing phase of gait.” CBER Research Day. Newark, DE, 2007.
18. Zeni, Jr., J.A. and Higginson, J.S. “Estimation of knee joint compression force in subjects with medial compartment knee osteoarthritis.” CBER Research Day. Newark, DE, 2007.
19. Xiao, M., Richards, C. and Higginson, J.S. “The simulation of normal and pathological gait using OpenSim.” CBER Research Day. Newark, DE, 2007.
20. Zeni, Jr., J. and Higginson, J. “Influence of speed on kinetics and coordination in knee osteoarthritis.” 2007 NorthEast American Society of Biomechanics Conference. College Park, MD, 2007.
21. Richards, C.J. and Higginson, J.S. “The effect of treadmill speed on walking kinematics and kinetics.” University of Delaware Research Foundation Poster Session. Newark, DE, 2006.
22. Crabtree , C.A. and Higginson, J.S. “Neuromuscular control is altered in simulated gait with ankle foot orthosis (AFO).” Annual Meeting of the American Society of Biomechanics. Blacksburg, VA, 2006.
23. Zeni, J. and Higginson, J. “Familiarization to walking on a split-belt treadmill: kinetics, kinematics and spatio-temporal parameters”. Annual Meeting of the American Society of Biomechanics. Blacksburg, VA, 2006.
24. Zeni, J. and Higginson, J. “Kinetic and kinematic gait changes and trends of familiarization with walking on a split belt treadmill”. 1 st Biennial National IDeA Symposium of Biomedical Research Excellence (NISBRE), Washington, DC, 2006.
25. Grabczewski, K. and Higginson, J. “Kinematic comparison of overground versus treadmill walking.”Science and Engineering Scholars Program, University of Delaware , 2006.
26. Burnim, K. and Higginson, J. “Analysis of ankle-foot orthosis on gait performance.” Science and Engineering Scholars Program, University of Delaware, 2006.
27. Richards, C. and Higginson, J. “The effect of speed on walking kinematics.” Science and Engineering Scholars Program, University of Delaware, 2006.
28. Crabtree , C.A. and Higginson, J.S. “Characterization of muscle power outputs as a result of wearing polypropylene ankle foot orthoses (AFOs) using 2-D musculoskeletal gait simulations. “ 60 th Annual Eastern Colleges Science Conference. Philadelphia, PA, 2006.
29. Higginson, J.S., Zajac, F.E., Neptune, R.R., Kautz, S.A. & Delp, S.L. “Reduced plantarflexor contributions to support in post-stroke hemiparetic gait.” XXth Congress of the International Society of Biomechanics. Cleveland, OH, 2005. (Podium presentation).
30. Higginson, J.S., Zajac, F.E., Neptune, R.R., Kautz, S.A. & Delp, S.L. “Differences in muscle contributions to support in slow gait.” Gait and Clinical Movement Analysis Society 10th Annual Meeting. Portland, OR, 2005. (Podium presentation.)
31. Higginson, J.S., Zajac, F.E., Kautz, S.A., Neptune, R.R., Delp, S.L., & Burgar, C.G. “Can intrinsic mechanics of equinus result in knee extension?” Gait and Clinical Movement Analysis Society 8th Annual Meeting. Wilmington, DE, 2003. (Podium presentation.)
32. Higginson, J.S., Neptune, R.R., Zajac, F.E., & Kautz, S.A. “How does soleus strength affect gait characteristics?” Biomedical Computation at Stanford 2001 Symposium Proceedings, Stanford, CA, 2001.
33. Cavanagh, P.R., Christina, K.A., Milner, C.E., Okita, N., Piazza, S.J. & Higginson, J.S. “MARey: A Package of Motion Analysis Routines for Three Dimensional Segmental and Joint Dynamics in MATLAB.” XVIIIth Congress of the International Society of Biomechanics, Zurich, Switzerland, 2001.
34. Pohl, P.S., Startzell, J.K., Duncan, P.W. & Wallace, D. “Reliability of lower extremity isokinetic strength testing in adults with stroke.” American Physical Therapy Association Combined Sections Meeting, New Orleans, LA, 2000.
35. Startzell, J.K. & Cavanagh, P.R. “A Three Dimensional Approach to the Calculation of Foot Clearance During Locomotion.” Proceedings of the Fifth International Symposium on the 3-D Analysis of Human Movement. Chattanooga, TN, 1998. (Podium presentation.)
36. Startzell, J.K., Sommer, H.J., Lemmon, D.R. & Cavanagh, P.R. “A Website for Teaching Fundamental 3D Kinematic Analysis.” Proceedings of the Twenty-First Annual Meeting of the American Society of Biomechanics, Clemson, SC, 1997.

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