Skip navigation
Publications

Center for Orthopaedic Biomechanics

Publications

Recent Peer Reviewed Journal Articles (* indicates DU student)

In press

Davidson, B.S., Judd, D.L., Thomas, A.C., Mizner, R.L., Eckhoff, D.G., Stevens-Lapsley, J.E., Muscle activation and coactivation during five-time-sit-to-stand movement in patients undergoing total knee arthroplasty. Journal of Electromyography and Kinesiology (in press - available online at http://dx.doi.org/10.1016/j.jelekin.2013.06.008).

Fitzpatrick, C.K., Baldwin, M.A.*, Clary, C.W., Maletsky, L.P., Rullkoetter, P.J., Evaluating knee replacement mechanics during ADL with PID-controlled dynamic finite element analysis. Computer Methods in Biomechanics and Biomedical Engineering, in press - available online.

Ali, A.A.*, Cristofolini, L., Schileo, E., Hu, H.*, Taddei, F., Kim, R.H., Rullkoetter, P.J., Laz, P.J., "Specimen-specific modeling of hip fracture pattern and repair," Journal of Biomechanics, in press - available online.

2013

Rao, C.*, Fitzpatrick, C.K., Rullkoetter, P.J., Kim, R., Maletsky, L.P., Laz, P.J., 2013. "A statistical finite element modeling approach accounting for intersubject shape and alignment variability in the knee," Medical Engineering and Physics, Vol. 35, 1450-1456.

Clary, C.W., Fitzpatrick, C.K., Maletsky, L.P., Rullkoetter, P.J., 2013. The influence of total knee arthroplasty geometry on mid-flexion stability: An experimental and finite element study. Journal of Biomechanics, Vol. 46, 1351-1357.

Fitzpatrick, C.K., Clary, C.W., Cyr, A., Maletsky, L.P., Rullkoetter, P.J., 2013. Mechanics of post-cam engagement during simulated dynamic activity. Journal of Orthopaedic Research, Vol. 31, 1438-1446.

Fitzpatrick, C.K., Kim, R., Ali, A.A.*, Smoger, L.M.*, Rullkoetter, P.J., 2013. Effects of resection thickness on mechanics of resurfaced patellae. Journal of Biomechanics, Vol. 46, 1568-1575.

Hancock, C.W., Winston, M.J., Bach, J.M., Davidson, B.S., Baldini, T.H., Eckhoff, D.G., 2013. Cylindrical axis, not epicondyles, approximates perpendicular to knee axes. Clinical Orthopaedics and Related Research, Vol. 471(7), 2278-2283.

2012

Baldwin, M.A.*, Clary, C., Fitzpatrick, C.K., Deacy, J.S.*, Maletsky, L.P., Rullkoetter, P.J, 2012. Dynamic finite element knee simulation for evaluation of knee replacement mechanics. Journal of Biomechanics, Vol. 45, 474-483.

Fitzpatrick, C.K., Clary, C.W., Laz, P.J., Rullkoetter, P.J., 2012. Relative contributions of design, alignment and loading variability in knee replacement mechanics. Journal of Orthopaedic Research, Vol. 30, 2015-2024.

Fitzpatrick, C.K., Clary, C.W., Rullkoetter, P.J., 2012. The role of patient, surgical, and implant design variation in total knee replacement performance. Journal of Biomechanics, Vol. 45, 2092-2102.

Fitzpatrick, C.K. Rullkoetter, P.J., 2012. Influence of patellofemoral articular geometry and material on mechanics of the unresurfaced patella. Journal of Biomechanics, Vol. 45, 1909-1915.

Fitzpatrick, C.K., Baldwin, M.A.*, Clary, C.W., Wright, A., Laz, P.J., Rullkoetter, P.J., 2012. Identifying alignment parameters affecting implanted patellofemoral mechanics. Journal of Orthopaedic Research, Vol. 30, 1167-1175.

Hoops, H.E., Johnson, D., Kim, R., Dennis, D.A., Baldwin, M.A.*, Fitzpatrick, C.K., Laz, P.J., Rullkoetter, P., 2012. Control-matched computational evaluation of tendo-femoral contact in patients with PS TKA. Journal of Orthopaedic Research, Vol. 30, 1355-1361.

Myers, C.A.*, Enebo, B.A., Davidson, B.S., 2012. Optimized prediction of contact force application during side-lying lumbar manipulation. Journal of Manipulative and Physiological Therapy, Vol. 35(9), 669-677.

Myers, C.A.*, Torry, M.R., Shelburne, K.B., Giphart, J.E., LaPrade, R.F., Woo, S.L., Steadman, J.R., 2012. In vivo tibiofemoral kinematics during 4 functional tasks of increasing demand using biplane fluoroscopy. American Journal of Sports Medicine, Vol. 40, 170-8.

Petrella, A., Armstrong, J., Laz, P., Rullkoetter, P., 2012. A Novel Cross-shear Metric for Application in Computer Simulation of Ultra-High Molecular Weight Polyethylene Wear. Computer Methods in Biomechanics and Biomedical Engineering, Vol. 15, 1223-1232.

2011

Davidson, B.S., Madigan, M.L., Southward, S.C., Nussbaum, M.A., 2011. Neural control of posture during small magnitude perturbations: The effects of aging and localized muscle fatigue. IEEE Transactions on Biomedical Engineering 58, 1546-1554.

Fernandez, J.W., Akbarshahi, M., Crossley, K.M., Shelburne, K.B., Pandy, M.G. 2011. Model Predictions of Increased Knee Joint Loading in Regions of Thinner Articular Cartilage after Patellar Tendon Adhesion. Journal of Orthopedic Research, Vol. 29, 1168-1177.

Fitzpatrick, C.K., Baldwin, M.A.*, Laz, P.J., FitzPatrick, D.P., Lerner, A., Rullkoetter, P.J., 2011. Development of a Statistical Shape Model of the Patellofemoral Joint for Investigating Relationships between Shape and Function. Journal of Biomechanics, Vol. 44, 2446-2452.

Fitzpatrick, C.K., Baldwin, M.A.*, Rullkoetter, P.J., Laz, P.J., 2011. Combined probabilistic and principal component analysis approach for multivariate sensitivity evaluation and application to TKR patellofemoral mechanics. Journal of Biomechanics, Vol. 44, 13-21.

Fitzpatrick, C.K., Baldwin, M.A.*, Ali, A.A.*, Laz, P.J., Rullkoetter, P.J., 2011. Comparison of patellar bone strain in the natural and implanted knee during simulated deep flexion. Journal of Orthopaedic Research, Vol. 29, 232-239.

Opgenorth, M.J.*, Lengsfeld, C.S., Laz, P.J., McDermott, W.E., 2011. A Combined Probabilistic and Optimization Approach for Chemical Laser System Design. Journal of Engineering, Vol. 3, 643-652.

Shelburne, K.B., Kim, H.-J., Sterett, W.I., Pandy, M.G., 2011. The Effect of Posterior Tibial Slope on Knee Forces during Functional Activity. Journal of Orthopedic Research, Vol. 2, 223-231.

Torry, M.R., Shelburne, K.B., Peterson, D.S., Giphart, J.E., Krong, J.P., Myers, C.*, Steadman, J.R., Woo, S.L., 2011. Knee Kinematic Profiles During Drop Landings: A Biplane Fluoroscopy Study. Medicine and Science in Sports and Exercise, Vol. 43, 533-541.

Torry, M.R., Myers, C.*, Pennington, W.W., Shelburne, K.B., Krong, J.P., Giphart, J.E., Steadman, J.R., Woo, S.L., 2011. Relationship of anterior knee laxity to knee translations during drop landings: a bi-plane fluoroscopy study. Knee Surg Sports Traumatol Arthrosc, Vol. 19, 653-662.

2010

Baldwin, M.A.*, Langenderfer, J.E., Rullkoetter, P.J., Laz, P.J., 2010. Development of Subject-Specific and Statistical Shape Models of the Knee using an Efficient Segmentation and Mesh Morphing Approach. Computer Methods and Programs in Biomedicine, Vol. 97, 232-240.

D'Ambrosia, P., King, K., Davidson, B.S., Zhou, B.H., Lu, Y., Solomonow, M., 2010. Pro-inflammatory cytokines expression increases following low- and high-magnitude cyclic loading of lumbar ligaments. European Spine Journal, Vol. 19, 1330-1339.

Fitzpatrick, C.K., Baldwin, M.A.*, Rullkoetter, P.J., 2010. Computationally efficient finite element evaluation of natural patellofemoral mechanics. Journal of Biomechanical Engineering, Vol. 132, 121013.

Grell, W.A.*, Laz, P.J., 2010. Probabilistic Fatigue Life Prediction Using AFGROW and Accounting for Material Variability International Journal of Fatigue, Vol. 32, 1042-1049.

Halloran, J.P.*, Clary, C.W., Maletsky, L.P., Taylor, M., Petrella, A.J., Rullkoetter, P.J., 2010. Verification of predicted knee replacement kinematics during simulated gait in the Kansas knee simulator. Journal of Biomechanical Engineering, Vol. 132, 081010.

Laz, P.J., Browne, M., 2010. A Review of Probabilistic Analysis in Orthopaedic Biomechanics. Proceedings of the Institution of Mechanical Engineers, Part H. Journal of Engineering in Medicine, invited review, Vol. 224, 927-943.

Strickland, M.A., Arsene, C.T.C., Pal, S.*, Laz, P.J., Taylor, M., 2010. A Multi-Platform Comparison of Efficient Probabilistic Methods in the Prediction of Total Knee Replacement Mechanics. Computer Methods in Biomechanics and Biomedical Engineering, Vol. 13, 701-709.

2009

Baldwin, M.A.*, Laz, P.J., Stowe, J.Q.*, Rullkoetter, P.J., 2009. Efficient Probabilistic Representation of Tibiofemoral Soft Tissue Constraint. Computer Methods in Biomechanics and Biomedical Engineering, Vol. 12(6), 651–659.

Baldwin, M.A.*, Clary, C., Maletsky, L.P., Rullkoetter, P.J., 2009. Verification of predicted specimen-specific natural and implanted patellofemoral kinematics during simulated deep knee bend. Journal of Biomechic, Vol. 42, 2341-8.

Ben-Masaud, A., Solomonow, D., Davidson, B., Zhou, B. H., Lu, Y., Patel, V., Solomonow M., 2009. Motor control of lumbar instability following exposure to various cyclic load magnitudes. European Spine Journal, 18(7), 1022-1034.

King, K., Davidson, B., Zhou, B. H., Lu, Y., & Solomonow, M., 2009. High magnitude cyclic load triggers inflammatory response in lumbar ligaments. Clinical Biomechanics, 24(10), 792-798.

Langenderfer, J.E., Rullkoetter, P.J., Mell, A.G., Laz, P.J., 2009. A Multi-Subject Evaluation of Uncertainty in Anatomical Landmark Location on Shoulder Kinematic Description. Computer Methods in Biomechanics and Biomedical Engineering, Vol. 12, 211-219.

Le, B., Davidson, B., Solomonow, D., Zhou, B. H., Lu, Y., Patel, V., Solomonow M., 2009. Neuromuscular Control of Lumbar Instability Following Static Work of Various Loads. Muscle & Nerve, 39(1), 71-82.

Petrella, A.J., Stowe, J.Q.*, D'Lima, D.D., Rullkoetter, P.J., Laz, P.J., 2009. CAS vs. Manual Alignment in THA: A Probabilistic Study of Range of Motion. Clinical Orthopaedics and Related Research, Vol. 467, 50-55.

Stowe, J.Q.*, Predecki, P.K., Laz, P.J., Burks, B.M.*, Kumosa, M., 2009. Probabilistic Molecular Dynamics Evaluation of the Stress-Strain Behavior of Polyethylene. Acta Materialia, Vol. 57, 3615-3622.

Yanagawa, T., Goodwin, C.J., Shelburne, K.B., Giphart, J.E., Torry, M.R., Pandy, M.G., 2009. Contributions of the individual muscles of the shoulder to glenohumeral joint stability during abduction. Journal of Biomechanical Engineering, Vol. 130, 021024.

2008

Langenderfer, J.E., Laz, P.J., Petrella, A.J., Rullkoetter, P.J., 2008. Incorporating Uncertainty in Body Segment Parameters and Anatomical Landmarks in Joint Loadings Estimated from Inverse Dynamics. Journal of Biomechanical Engineering, Vol. 130, 014502.

Pal, S.*, Haider, H., Laz, P.J., Knight, L.A., Rullkoetter, P.J., 2008. Probabilistic Finite Element Modeling of TKR Wear. Wear, Vol. 264, 701–707.

Shelburne, K.B., Torry, M.R., Steadman, J.R., Pandy, M.G., 2008. The Effect of Valgus Bracing and Lateral Wedge Orthotics on Knee Load and Adduction Moment During Gait. Clinical Biomechanics, Vol. 23, 814-821

2007

Adams, C.R.*, Baldwin, M.A.*, Laz, P.J., Rullkoetter, P.J., Langenderfer, J.E., 2007. Effects of Rotator Cuff Tears on Muscle Moment Arms: A Computational Study. Journal of Biomechanics, Vol. 40, p. 3373-3380.

Easley, S.K.*, Pal, S.*, Tomaszewski, P.R., Petrella, A.J., Rullkoetter, P.J., Laz, P.J., 2007. Finite Element-Based Probabilistic Analysis Tool For Orthopaedic Applications. Computer Methods and Programs in Biomedicine, Vol. 85, p. 32-40.

Grell, W.A.*, Niggeler, G.H.*, Groskreutz, M.E., Laz, P.J., 2007. Evaluation of Creep Life Prediction Models: Considerations of Stepped Testing and Highly Stressed Volume. Fatigue and Fracture of Engineering Materials and Structures, Vol. 30, p. 689-697.

Laz, P.J., Stowe, J.Q.*, Baldwin, M.A.*, Petrella, A.J., Rullkoetter, P.J., 2007. Incorporating Uncertainty in Mechanical Properties for Finite Element-Based Evaluation of Bone Mechanics. Journal of Biomechanics, Vol. 40, p. 2831-2836.

Morton, N.A., Maletsky, L.P., Pal, S.*, Laz, P.J., 2007. Effect of Anatomical Landmark Location on Knee Kinematic Description. Journal of Orthopaedic Research, Vol. 25, p. 1221-1230.

Pal, S.*, Langenderfer, J.E., Stowe, J.Q.*, Laz, P.J., Petrella, A.J., Rullkoetter, P.J., 2007. Probabilistic Modeling of Knee Muscle Moment Arms: Effects of Methods, Origin-Insertion and Kinematic Variability. Annals of Biomedical Engineering, Vol. 35, 1632-1642

2006

Laz, P.J., Pal, S.*, Fields, A.*, Petrella, A.J., Rullkoetter, P.J., 2006. Effects of Knee Simulator Loading and Alignment Variability on Predicted Implant Mechanics: A Probabilistic Study. Journal of Orthopaedic Research, Vol. 24, p. 2212-2221.

Laz, P.J., Pal, S.*, Halloran, J.P.*, Petrella, A.J., Rullkoetter, P.J., 2006. Probabilistic Finite Element Prediction of Knee Wear Simulator Mechanics. Journal of Biomechanics, Vol. 39, p. 2303-2310.

Penmetsa, J.*, Laz, P.J., Petrella, A.J., Rullkoetter, P.J., 2006. Influence of Polyethylene Creep Behavior on Wear in THA. Journal of Orthopaedic Research, Vol. 24, p. 422-427.

Shelburne, K.B., Torry, M.R., Pandy, M.G., 2006. Contributions of muscle, ligament, and ground-reaction forces to tibiofemoral load during normal gait. Journal of Orthopedic Research, Vol. 24, 1983-1990.