Lower Extremity Biomechanics and Pathologies

Generic versus personalized foot-ground contact models for predictive simulations of walking: Is personalization worth the effort?

This study compares generic and personalized foot-ground contact models in walking simulations, finding that personalized models improve accuracy in estimating ground reactions and joint loads.

Running Style and Stability During Uphill Running Are Largely Preserved with Increasing Shoe Sole Thickness

This study examines how shoe sole thickness affects running style and stability during uphill running, finding minimal changes across different shoe conditions.

Plantar flexor muscle size, composition and strength and the redistribution of joint work in gait of healthy older adults

This study examines age-related changes in plantar flexor muscle size, composition, and strength in older adults and their impact on gait mechanics.

Positive joint work redistribution in running: the role of plantar flexor fatigue and the effect of advanced footwear technology

This study examines how plantar flexor fatigue and footwear technology affect joint work redistribution during running.

From Body Hulls to Musculoskeletal Models: Personalized Inertial Parameter Estimation

This paper develops a method to estimate personalized musculoskeletal inertial parameters using body hulls from smartphone images, improving accuracy over generic models in gait analysis.

Data driven shoe design improves running economy beyond state-of-the-art Advanced Footwear Technology running shoes

This study compares a data-driven designed running shoe to existing state-of-the-art models, finding the new shoe improves running economy across all tested runners.

Knee and Hip Joint Dynamics Differ between Sprinting and Nordic Hamstring Exercises

This study compares knee and hip joint dynamics during sprinting and Nordic hamstring exercises, finding differences in biomechanical demands and hamstrings muscle-tendon unit behavior.

Running with an exotendon reduces compressive knee contact force

This study finds that using an exotendon reduces peak knee compressive contact force during running without affecting shear forces or other joints.

Simulating human foot mechanics during walking based on an anatomically detailed forward dynamic finite element model

This study develops a detailed finite element model of the human foot to simulate its mechanics during walking, showing it matches experimental data and provides insights into foot pathologies.

Integrating Machine Learning with Musculoskeletal Simulation Improves OpenCap Video-Based Dynamics Estimation

This paper develops a hybrid machine learning and musculoskeletal simulation framework to improve dynamics estimation from smartphone video during walking, achieving lower error rates than simulation-only or ML-only approaches.

Effects of Forefoot versus Rearfoot Landing on Biomechanical Risk Factors for Lower Limb Injuries and Performance During Stop-Jump Tasks

This study compares forefoot and rearfoot landing techniques during stop-jump tasks, finding differences in biomechanical risk factors and performance metrics.

How peak knee loads are affected by changing the mass of lower-limb body segments during walking

This study investigates how adding mass to different lower-limb segments affects peak knee contact forces during walking, finding that foot mass increases forces more than thigh or shank mass.

Is increasing the effective leg length of a human runner metabolically beneficial?

This study examines if increasing midsole thickness or compliance in running shoes affects metabolic cost and effective leg length, finding that compliance reduces metabolic cost while thickness increases leg length but raises metabolic cost.

Reducing flight time during running decreases tibial-fibular strains: a finite element analysis

This study shows that reducing flight time during running lowers tibial-fibular strains, suggesting grounded running may reduce stress fracture risk.

Joint Moment-Angle/Velocity Relations in the Hip, Knee, and Ankle: A Meta-Visualization of Datasets

The paper meta-visualizes 985 joint moment datasets to explore hip, knee, and ankle moment-angle and moment-velocity relations in musculoskeletal mechanics.

The effects of running shoe stack height on running style and stability during level running at different running speeds

This study examines how different running shoe stack heights affect running style and stability at various speeds, finding that higher stack heights alter kinematic parameters and stability metrics.

The energetic cost of human walking as a function of uneven terrain amplitude

This paper quantifies the energy cost of walking on uneven terrain, showing it increases quadratically with amplitude and cubically with speed.

Effects of longitudinal bending stiffness and midsole foam on running energetics

This study quantifies how longitudinal bending stiffness and midsole foam affect running economy, finding similar improvements from a carbon fiber plate or PEBA foam.

A split-belt instrumented treadmill with uneven terrain

This paper describes modifications to a split-belt instrumented treadmill to enable use on uneven terrain, demonstrating accurate ground reaction force measurements.

Moving in pain - A preliminary study evaluating the immediate effects of experimental knee pain on locomotor biomechanics.

This study examines how experimental knee pain affects locomotor biomechanics during walking, finding changes in knee flexion angles and reduced joint stiffness with increasing pain intensity.

How many segments are enough to biomechanically model the feet? A comparison of inverse kinematics and dynamics in multisegmented foot models

This study compares multisegmented foot models to determine if they yield consistent joint kinematic and kinetic data, finding significant variability based on segment definitions.

How human runners regulate footsteps on uneven terrain

This study examines how human runners maintain stability on uneven terrain by analyzing their kinematics, energetics, and stepping patterns, finding that leg compliance, not precise foot placement, ensures stability.

Mechanical Work Accounts for Most of the Energetic Cost in Human Running

The paper estimates the energetic cost of human running and finds that active muscle work accounts for most of the cost, even when considering passive elastic contributions.

Development and validation of FootNet; a new kinematic algorithm to improve foot-strike and toe-off detection in treadmill running

FootNet is a deep learning algorithm that improves foot-strike and toe-off detection in treadmill running without force data, outperforming existing methods across various running conditions.

Slow walking synergies reveal a functional role for arm swing asymmetry in healthy adults: a principal component analysis with relation to mechanical work.

This study uses principal component analysis to examine arm-swing asymmetry in healthy adults during slow walking, finding a relationship between arm-swing dominance and lower-limb mechanical work asymmetry.

Influence of Arm Swing on Cost of Transport during Walking

This study examines how different arm swing amplitudes affect the cost of transport during walking, finding that excessive arm swing does not further reduce energy costs.