Search Results - "Delp, S L"

Modeling and predicting osteoarthritis progression: data from the osteoarthritis initiative by Halilaj, E., Le, Y., Hicks, J.L., Hastie, T.J., Delp, S.L.

“…The goal of this study was to model the longitudinal progression of knee osteoarthritis (OA) and build a prognostic tool that uses data collected in 1 year to…”
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Influence of muscle morphometry and moment arms on the moment-generating capacity of human neck muscles by VASAVADA, A. N, SIPING LI, DELP, S. L

“…The function of neck muscles was quantified by incorporating experimentally measured morphometric parameters into a three-dimensional biomechanical model. To…”
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A neural network to predict the knee adduction moment in patients with osteoarthritis using anatomical landmarks obtainable from 2D video analysis by Boswell, M.A., Uhlrich, S.D., Kidziński, Ł., Thomas, K., Kolesar, J.A., Gold, G.E., Beaupre, G.S., Delp, S.L.

“…The knee adduction moment (KAM) can inform treatment of medial knee osteoarthritis; however, measuring the KAM requires an expensive gait analysis laboratory…”
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Physical activity is associated with changes in knee cartilage microstructure by Halilaj, E., Hastie, T.J., Gold, G.E., Delp, S.L.

“…The purpose of this study was to determine if there is an association between objectively measured physical activity and longitudinal changes in knee cartilage…”
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Three-dimensional dynamic simulation of total knee replacement motion during a step-up task by Piazza, S J, Delp, S L

“…A three-dimensional dynamic model of the tibiofemoral and patellofemoral articulations was developed to predict the motions of knee implants during a step-up…”
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Characteristics associated with improved knee extension after strength training for individuals with cerebral palsy and crouch gait by Steele, K M, Damiano, D L, Eek, M N, Unger, M, Delp, S L

“…Muscle weakness may contribute to crouch gait in individuals with cerebral palsy, and some individuals participate in strength training programs to improve…”
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Prediction of glycosaminoglycan content in human cartilage by age, T1ρ and T2 MRI by Keenan, K.E, Besier, T.F, Pauly, J.M, Han, E, Rosenberg, J, Smith, R.L, Delp, S.L, Beaupre, G.S, Gold, G.E

“…Summary Objective A relationship between T1ρ relaxation time and glycosaminoglycan (GAG) content has been demonstrated in chemically degraded bovine cartilage,…”
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Muscular resistance to varus and valgus loads at the elbow by Buchanan, T S, Delp, S L, Solbeck, J A

“…Although the contributions of passive structures to stability of the elbow have been well documented, the role of active muscular resistance of varus and…”
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A graphics-based software system to develop and analyze models of musculoskeletal structures by Delp, Scott L., Loan, J.Peter

“…We have created a graphics-based software system that enables users to develop and analyze musculoskeletal models without programming. To define a model using…”
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Evaluation of a deformable musculoskeletal model for estimating muscle-tendon lengths during crouch gait by Arnold, A S, Blemker, S S, Delp, S L

“…The hamstrings and psoas muscles are often lengthened surgically in an attempt to correct crouch gait in persons with cerebral palsy. The purpose of this study…”
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The Interaction of Compliance and Activation on the Force-Length Operating Range and Force Generating Capacity of Skeletal Muscle: A Computational Study using a Guinea Fowl Musculoskeletal Model by Cox, S M, Easton, K L, Lear, M Cromie, Marsh, R L, Delp, S L, Rubenson, J

“…A muscle's performance is influenced by where it operates on its force-length (F-L) curve. Here we explore how activation and tendon compliance interact to…”
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An interactive graphics-based model of the lower extremity to study orthopaedic surgical procedures by Delp, S.L., Loan, J.P., Hoy, M.G., Zajac, F.E., Topp, E.L., Rosen, J.M.

“…A model is developed of the human lower extremity to study how changes in musculoskeletal geometry and musculotendon parameters affect muscle force and its…”
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Effect of equinus foot placement and intrinsic muscle response on knee extension during stance by Higginson, J.S., Zajac, F.E., Neptune, R.R., Kautz, S.A., Burgar, C.G., Delp, S.L.

“…Equinus gait, a common movement abnormality among individuals with stroke and cerebral palsy, is often associated with knee hyperextension during stance…”
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How superior placement of the joint center in hip arthroplasty affects the abductor muscles by Delp, S L, Wixson, R L, Komattu, A V, Kocmond, J H

“…This study examines the effects of a superiorly placed hip center on the strength of the abductor muscles. A 3-dimensional computer model of the hip and the…”
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Muscle contributions to support during gait in an individual with post-stroke hemiparesis by Higginson, J.S., Zajac, F.E., Neptune, R.R., Kautz, S.A., Delp, S.L.

“…Walking requires coordination of muscles to support the body during single stance. Impaired ability to coordinate muscles following stroke frequently…”
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Three-dimensional representation of complex muscle architectures and geometries by Blemker, Silvia S, Delp, Scott L

“…Almost all computer models of the musculoskeletal system represent muscle geometry using a series of line segments. This simplification (i) limits the ability…”
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Effects of hip center location on the moment-generating capacity of the muscles by Delp, S L, Maloney, W

“…We have developed a three-dimensional biomechanical model of the human lower extremity to study how the location of the hip center affects the…”
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Hamstrings and psoas lengths during normal and crouch gait: implications for muscle-tendon surgery by Delp, S L, Arnold, A S, Speers, R A, Moore, C A

“…Crouch gait, one of the most common movement abnormalities among children with cerebral palsy, is characterized by persistent flexion of the knee during the…”
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Force- and moment-generating capacity of lower-extremity muscles before and after tendon lengthening by Delp, S L, Zajac, F E

“…A computer model of the human lower extremity was developed to study how surgical lengthening of tendon affects the force- and moment-generating capacity of…”
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Posterior tilting of the tibial component decreases femoral rollback in posterior-substituting knee replacement: a computer simulation study by Piazza, S J, Delp, S L, Stulberg, S D, Stern, S H

“…Posterior tilting of the tibial component is thought to increase the range of motion in posterior cruciate-retaining total knee replacement, but its effect on…”
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