Article
Neurosciences
Orhan Oeztuerk, Firooz Salami, Arik Rehani Musagara, Ilksan Demirbueken, M. Guelden Polat, Sebastian Wolf, Marco Goetze
Summary: The choice of calibration movement significantly affects the accuracy of estimating HJC location in children with CP. Repeating calibration movements does not necessarily improve results, with a modified star movement providing the most reliable data. Analyzing hip motion in the contralateral stance limb yielded the most precise HJC estimation results.
Article
Multidisciplinary Sciences
Amany Eid Abd El-Tawab, Aisha Farhana
Summary: In this study, a software called Analysis Q Hip Force (AQHF) was designed to analyze the hip joint reaction force (JRF) and ground reaction force (GRF) during walking. The results showed a significant correlation between JRF/GRF values and healthy walking indices, indicating the potential of using this software for clinical applications.
Article
Biophysics
Emiliano Pablo Ravera, Victoria Peterson
Summary: The study introduces an anisotropic regularized version of the SCoRE formulation (RSCoRE) for estimating the hip joint center (HJC) by using standard gait trials. RSCoRE shows similar accuracy and repeatability compared to functional and predictive methods, making it a valuable approach for individuals with limited hip range of motion.
JOURNAL OF BIOMECHANICS
(2021)
Article
Multidisciplinary Sciences
Y. Palmowski, S. Popovic, D. Kosack, P. Damm
Summary: Footwear choice post joint replacement surgery plays a crucial role in affecting hip joint loads during physiotherapy. This study examined the impact of different types of shoes on in vivo hip joint loads, finding that shoes, especially those with stiff soles or elaborate cushioning elements, tend to increase hip joint loading during walking. Preferably, low-profile shoes with a flexible sole may be more suitable for patients aiming for reduced hip joint loads, especially during postoperative physiotherapy or to alleviate osteoarthritis symptoms.
SCIENTIFIC REPORTS
(2021)
Article
Orthopedics
Yannick Palmowski, Srdan Popovic, Simone G. Schuster, Sebastian Hardt, Philipp Damm
Summary: The study found that Nordic walking has a similar impact on hip joint loads as regular walking, making it a low-impact activity suitable for patients allowed full weight bearing, such as during postoperative rehabilitation after total hip arthroplasty.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2021)
Article
Orthopedics
Nathanael Heckmann, Taro Tezuka, Russell J. Bodner, Lawrence D. Dorr
Summary: The study aimed to define the functional anatomy of the hip joint using clinical and radiographic analyses. It was found that pelvic motion is coordinated with hip motion, with specific ratios observed between various motions. The triangle model visually illustrates the coordinated mobility of the hip joint during postural changes.
JOURNAL OF ARTHROPLASTY
(2021)
Article
Engineering, Mechanical
Zhiyuan Yu, Liangchi Zhang
Summary: Wear of the bearing surfaces of an artificial hip joint (AHJ) is a major cause of premature prosthesis failure. This study aims to develop an effective mechanism model to investigate the wear at the bearing surfaces of a hip joint prosthesis under three-dimensional motion and loading conditions during patient's walking activities. Finite element method was used to construct femoral heads and acetabular cups of various dimensions and explore the effect of design parameters on the contact wear of their bearing surfaces. Analysis of the contact area trajectory revealed that the sliding trajectory mainly concentrated in specific regions of the acetabular cup. After 106 cycles of gait walking, an AHJ with thicker cup thickness or smaller femoral head radius had less volumetric wear, while that with thinner cup thickness or larger femoral head radius had less linear wear.
Article
Orthopedics
Binglang Xiong, Peng Yang, Tianye Lin, Jingli Xu, Yong Xie, Yongliang Guo, Churong Liu, Qizhao Zhou, Qizhong Lai, Wei He, Qiushi Wei, Qingwen Zhang
Summary: This study constructs a comprehensive simulation method for analyzing the dynamics and contact stress changes of the hip joint throughout a gait cycle. Individualized simulation modeling is achieved based on gait trajectories and CT images. The combination of subject-specific gait and inverse dynamic analysis provides pre-processing parameters for more accurate biomechanical analysis of the hip joint.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2022)
Article
Multidisciplinary Sciences
Laurie Needham, Murray Evans, Darren P. Cosker, Logan Wade, Polly M. McGuigan, James L. Bilzon, Steffi L. Colyer
Summary: Markerless pose estimation algorithms show potential for large scale movement studies outside of the laboratory, but their accuracy is not yet fully evaluated. 3D joint centre locations derived from these algorithms are not consistently comparable to marker-based motion capture.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Analytical
Ho Seok Lee, Hokyoung Ryu, Shi-Uk Lee, Jae-sung Cho, Sungmin You, Jae Hyeon Park, Seong-Ho Jang
Summary: The study investigated gait characteristics in stroke patients using hip-knee cyclograms, revealing differences in cyclogram parameters between stroke patients and healthy controls, as well as variations based on stroke severity. Specific gait patterns of stroke patients were visualized through cyclograms, highlighting the clinical significance of the inter-joint coordination and visualized gait cycle shown in hip-knee cyclograms.
Article
Computer Science, Information Systems
Ming-Hang Tan, Qin-Mu Wu, Zhi-Qin He, Lin Li, Bing Qiu, Chun-Shan Luo, Yi-Ming Xu
Summary: In this study, an oscillator-based hybrid gait phase estimation method was proposed for hip assistive exoskeletons. The method processed the raw data of hip angle with Butterworth low-pass filtering, and accurately divided each gait cycle by combining hip angle, hip angular velocity, and plantar pressure. The experiments showed that the proposed method had lower phase estimation errors and improved the gait feature estimation performance compared to other methods.
Article
Biotechnology & Applied Microbiology
S. van Drongelen, S. Braun, F. Stief, A. Meurer
Summary: The gait pattern of patients with bilateral hip osteoarthritis differs from healthy controls, showing more symmetrical joint loading.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Analytical
Firdaus Aslam, Kamal Jamil, Ohnmar Htwe, Brenda Saria Yuliawiratman, Elango Natarajan, Irraivan Elamvazuthi, Amaramalar Selvi Naicker
Summary: This study compared gait changes, radiological outcomes, and functional outcomes in children who underwent DDH surgery with healthy controls. Results showed that there were no differences in spatial parameters between the two groups, but the DDH group had a longer swing phase and a shorter stance phase. They also had smaller hip adduction angle, increased internal rotation, and reduced upward pelvic tilt. Some children had poor radiological outcomes and gait abnormalities despite good functional scores. Specific rehabilitative strategies are recommended for long-term management.
Article
Multidisciplinary Sciences
James J. Dunne, Thomas K. Uchida, Thor F. Besier, Scott L. Delp, Ajay Seth
Summary: The passage discusses a new orientation-based marker registration method to reduce errors in joint angles and moments, as well as eliminating variability among users. By analyzing the gait of a bipedal humanoid robot using OpenSim, the proposed method reduced error by 67% compared to user registration and made marker registration more accurate and repeatable.
Article
Orthopedics
Brian P. Chalmers, Milan Kapadia, Yu-Fen Chiu, Andy O. Miller, Michael W. Henry, Stephen Lyman, Alberto Carli
Summary: The study evaluated the predictive value of CRIME80 and KLIC for DAIR failure in acute hematogenous and postoperative PJI. Initial results show potential value, but further validation is necessary for accurate prediction of DAIR failure.
JOURNAL OF ARTHROPLASTY
(2021)
Article
Orthopedics
Nicholas J. Murphy, Laura E. Diamond, Kim L. Bennell, Alexander Burns, Edward Dickenson, Jillian Eyles, Camdon Fary, Stuart M. Grieve, Damian R. Griffin, Young Jo Kim, James M. Linklater, David G. Lloyd, Robert Molnar, Rachel L. O'Connell, John O'Donnell, Sunny Randhawa, Parminder J. Singh, Libby Spiers, Phong Tran, Tim Wrigley, David J. Hunter
Summary: The age of symptom onset in femoroacetabular impingement syndrome (FAIS) is mainly predicted by the measurement of femoral and acetabular morphology, while symptom severity is predominantly determined by patient factors. The measured factors explained only a small amount of variance in the data, suggesting that there may be other unmeasured factors that have a greater influence on the condition.
Article
Orthopedics
William du Moulin, Matthew Bourne, Laura E. Diamond, Jason Konrath, Christopher Vertullo, David Lloyd, David J. Saxby
Summary: The study aimed to investigate the differences in shape and regional morphology of the semitendinosus (ST) muscle in young adults following anterior cruciate ligament reconstruction (ACLR) compared to healthy controls. The results showed significant shape differences and deviations in the ST muscle of the ACLR group, particularly in the distal region. Additionally, the ACLR group had smaller peak cross-sectional area and volume in the proximal and middle regions of the ST muscle compared to the healthy controls. Shape analysis provides unique insight into regional adaptations in ST morphology post-ACLR.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Article
Neurosciences
Hans Kainz, Ilse Jonkers
Summary: Personalizing the musculoskeletal geometry can improve the accuracy of joint contact forces, but it is still uncertain whether it improves the agreement between estimated muscle activations and EMG signals. MRI-based models altered the magnitude of muscle activations and had a large impact on JCF, but did not change the muscle activation profiles and therefore did not improve the agreement with EMG signals. EMG-informed modeling approaches should be used for musculoskeletal simulation in children with cerebral palsy.
Article
Audiology & Speech-Language Pathology
Jason A. Whitfield, Zoe Kriegel, Adam M. Fullenkamp
Summary: The purpose of this research was to quantify the impact of performing a secondary task on the movement variability of clear and loud speech. The results showed that clear speech had greater temporal and spatial variability compared to habitual and loud speech. When performing the secondary task, speakers demonstrated a slight reduction in absolute spatial variability, likely due to a decrease in lip range of motion.
JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH
(2023)
Article
Biophysics
Trevor N. Savage, David J. Saxby, David G. Lloyd, Claudio Pizzolato
Summary: The purpose of this study was to determine whether calibration of an NMS model resulted in consistent joint contact forces, regardless of EMD value or personalisation of Fo. Hip, knee, and ankle contact forces were predicted for 28 participants using EMG-informed NMS models. The results showed that calibrated models with EMD set between 35 and 70 ms produced similar magnitude and timing of peak joint contact forces.
JOURNAL OF BIOMECHANICS
(2023)
Article
Biotechnology & Applied Microbiology
Willi Koller, Basilio Goncalves, Arnold Baca, Hans Kainz
Summary: This study developed a semi-automated toolbox to assess intra-subject variability in growth plate stresses in typically developing children and children with cerebral palsy. The results showed higher intra-subject variability in growth plate stresses in children with cerebral palsy. Reference values for growth plate stress distribution were provided for further investigations.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Azadeh Nasseri, Riad Akhundov, Adam L. Bryant, David G. Lloyd, David J. Saxby
Summary: This study examined the impact of limiting EMG and GRF data on the modelled ACL forces during a jump task in late-/post-pubertal females. The results showed that using only vertical GRF for EMG-informed or static optimization neural models led to significant overestimation of ACL force during landing. Using 3D GRF in combination with static optimization slightly overestimated ACL force compared to the reference model. None of the alternative models maintained the rank order of ACL loading magnitudes generated by the reference model. It was observed that there was substantial variability across the study sample in response to limiting EMG and GRF data, suggesting the need for subject-specific measures when modeling ACL loading during dynamic motor tasks.
BIOENGINEERING-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Nathan R. Lyons, Matthew T. O. Worsey, Daniel Devaprakash, Yana A. Salchak, David V. Thiel, Sam Canning, David G. Lloyd, Claudio Pizzolato
Summary: This study investigated the performance of different commercially available textile electrodes in measuring sEMG, including their performance after washing. The results showed that electrodes manufactured from nickel/copper plated polyester textile performed the best, with signal quality comparable to Ag/AgCl gel electrodes. This is important for the development of wearable smart garments with embedded electrodes.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Biomedical
David G. Lloyd, Ilse Jonkers, Scott L. Delp, Luca Modenese
Summary: The Executive Council of the International Society of Biomechanics has initiated and overseen the commemorations of the Society's 50th Anniversary in 2023. This special issue of the Journal of Applied Biomechanics is dedicated to the biomechanics of the neuromusculoskeletal system, and focuses on current state-of-the-art research and future directions in the field.
JOURNAL OF APPLIED BIOMECHANICS
(2023)
Article
Engineering, Biomedical
Kirsten Veerkamp, Christopher P. Carty, Niels F. J. Waterval, Thomas Geijtenbeek, Annemieke I. Buizer, David G. Lloyd, Jaap Harlaar, Marjolein M. van der Krogt
Summary: Spasticity contributes to gait deviations in children with neuromusculoskeletal disorders. This study used predictive simulations to evaluate the pathophysiological mechanisms underlying these deviations. The analysis extracted distinct gait patterns, and the simulation framework predicted gait with velocity- or force-based hyperreflexia. The study found that velocity-based hyperreflexia from specific muscles contributes to different spastic gait patterns, providing insights for targeted treatment.
JOURNAL OF APPLIED BIOMECHANICS
(2023)
Article
Multidisciplinary Sciences
Hans Kainz, Gabriel T. Mindler, Andreas Kranzl
Summary: Femoral deformities can cause abnormal gait patterns, altered joint loads, and degenerative joint diseases. This study investigated the influence of femoral anteversion (AVA) and neck-shaft angle (NSA) on muscle forces and joint loads during walking. The results showed that increasing AVA and NSA led to increased co-contraction of certain muscles and significant increase in joint contact forces. Understanding the influence of femoral geometry on muscle forces and joint loads can help clinicians in treating patients with femoral deformities.
Article
Multidisciplinary Sciences
Ayda Karimi Dastgerdi, Amir Esrafilian, Christopher P. Carty, Azadeh Nasseri, Alireza Yahyaiee Bavil, Martina Barzan, Rami K. Korhonen, Ivan Astori, Wayne Hall, David John Saxby
Summary: This study developed subject-specific finite element (FE) models of the knee for typically developing pediatric individuals, using an atlas-based approach. The models accurately predicted pediatric knee kinematics and contact pressure distributions, demonstrating their potential for parametric analyses, clinical studies, and enhanced understanding of pediatric knee injury mechanisms.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Biomedical
Zhengliang Xia, Daniel Devaprakash, Bradley M. Cornish, Rod S. Barrett, David G. Lloyd, Andrea H. Hams, Claudio Pizzolato
Summary: An artificial intelligence workflow was developed to predict strain in the Achilles tendon during running using motion capture data. Two AI workflows were compared, one directly predicting strain and the other predicting force and converting it to strain. The best predictions were achieved using position, velocity, height, and mass as input features.
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Willi Koller, Arnold Baca, Hans Kainz
Summary: This study found differences in hip joint contact force (HJCF) asymmetry between children with cerebral palsy (CP) and typically developing (TD) children. The gait pattern was identified as the main contributor to HJCF asymmetry in both CP and TD children, with CP children exhibiting higher asymmetry possibly due to larger asymmetry in their gait pattern. These findings highlight the importance of clinical interventions focusing on normalizing the gait pattern to prevent the development of femoral deformities.
Article
Engineering, Biomedical
Mitchel A. Magrini, Rashelle Hoffman, Taylor Barnett, Jennifer Bruursema, Jacob Siedlik
Summary: This study aimed to assess the effect of a multicomponent rehabilitation protocol on functional outcomes in a post-acute care facility. The results showed that the protocol was able to improve clinical mobility and balance outcomes, such as gait speed, balance scores, and sit-to-stand velocity, in medically complex older patients.
CLINICAL BIOMECHANICS
(2024)
Article
Engineering, Biomedical
K. Doslikova, N. D. Reeves, C. N. Maganaris, V. Baltzopoulos, S. M. P. Verschueren, F. P. Luyten, R. K. Jones, D. T. Felson, M. J. Callaghan
Summary: This study aimed to examine the effect of a sleeve knee brace on knee biomechanics during stair negotiation in patellofemoral joint osteoarthritis patients. The findings showed that the knee brace significantly reduced the maximal flexion angle, adduction angle, sagittal and frontal range of motion, and sagittal peak extension moment during stair ascent. During stair descent, the knee brace significantly reduced the maximal flexion angle and total sagittal range of motion compared to control.
CLINICAL BIOMECHANICS
(2024)
Article
Engineering, Biomedical
Savitha Subramaniam, Shuaijie Wang, Tanvi Bhatt
Summary: This study investigates the dance movement kinematics of people with chronic stroke under different types of assistance, including no assistance, safety harness assistance, and contact guard assistance with gait belt. The results show that there is a decrease in joint angle excursions in the no assistance condition compared to the safety harness assistance and contact guard assistance conditions for all song paces. The safety harness and contact guard assistance conditions have similar levels of joint angle excursions, except for higher hip (slow and fast pace) and ankle (medium pace) joint angle excursions in the contact guard assistance condition compared to the safety harness assistance condition.
CLINICAL BIOMECHANICS
(2024)
Article
Engineering, Biomedical
Richa Gupta, Lauren Judkins, Chet S. Friday, Joseph B. Ulsh, Stephen J. Kovach III, Samir Mehta, Charles Tomonto, Guha Manogharan, Michael W. Hast
Summary: The study compared novel additively manufactured rib implants with a clinically used Control implant, finding that the novel implants had better construct stiffness and rotational performance than the control group, with all implants failing via bone fracture in the end.
CLINICAL BIOMECHANICS
(2024)
Article
Engineering, Biomedical
Matteo Cioni, Antonino Casabona, Rosario Ferlito, Mariangela Pisasale, Domenico Marco Romeo, Giulia Messina, Maria Stella Valle
Summary: The study aimed to investigate the temporal changes of electromyographic activity in lower limb muscles during walking after injecting botulinum toxin A into the calf muscles of children with spastic cerebral palsy. The results showed that botulinum toxin A had a significant effect on electromyographic activity, with the most noticeable changes occurring between 4 and 8 weeks post-injection and full recovery at 16 weeks. Significant changes in muscle co-contraction were also observed on the treadmill.
CLINICAL BIOMECHANICS
(2024)
Review
Engineering, Biomedical
Vitor La Banca, Joao Artur Bonadiman, Felipe Fernandes Gonzalez, Jonathan Adam Gustafson, Gustavo Leporace, Grant E. Garrigues, Jorge Chahla, Leonardo Metsavaht
Summary: Background: Latissimus dorsi transfer is a surgical procedure that can be used for treating posterosuperior rotator cuff tears. However, there is still no consensus on the biomechanical changes resulting from latissimus dorsi transfer.
Methods: We performed a systematic review of the literature on 3D motion analysis studies evaluating the effects of latissimus dorsi transfer on shoulder kinematics.
Findings: Our meta-analysis revealed a significant improvement in forward flexion and abduction following latissimus dorsi transfer. When comparing the latissimus transferred shoulder with an uninjured contralateral side, the meta-analysis found no significant difference in flexion range of motion, while abduction and external rotation were significantly higher in the uninjured shoulders.
CLINICAL BIOMECHANICS
(2024)
Article
Engineering, Biomedical
Judith Bleuel, Igor Komnik, Iris Mittendorfer, Bjoern Michel, Steffen Willwacher
Summary: This study assessed the walking mechanics of patients with total knee arthroplasty during downhill hiking and compared them to a healthy control group. It was found that patients had lower knee flexion angles and weaker muscle strength compared to the controls. The muscle balance between quadriceps and hamstring muscles was related to the persistence of a stiff knee gait pattern after knee arthroplasty.
CLINICAL BIOMECHANICS
(2024)
Article
Engineering, Biomedical
Sangsoo Park, Hyun-Joon Yoo, Jin Su Jang, Sang-Heon Lee
Summary: This study utilizes a neural network to measure spine curvature, providing a real-time, automated, and non-contact method for measuring spine posture. The trained model demonstrates low error rates and holds potential for practical applications.
CLINICAL BIOMECHANICS
(2024)
Article
Engineering, Biomedical
Victor-Estuardo Leon-Roman, David Garcia-Mato, Irene Isabel Lopez-Torres, Javier Vaquero-Martin, Jose Antonio Calvo-Haro, Javier Pascau, Pablo Sanz-Ruiz
Summary: This study compared the tibial rotation between rotating hinge knee prosthesis and constrained condylar knee prosthesis in a clinical setting. The results showed that the postoperative Knee Injury and Osteoarthritis Outcome Score was significantly higher in the rotating hinge knee prosthesis group compared to the constrained condylar knee group, and the degrees of tibial rotation measured by inertial sensors were also significantly higher in the rotating hinge knee prosthesis group.
CLINICAL BIOMECHANICS
(2024)