Article
Computer Science, Interdisciplinary Applications
Yi Ting Yap, Darwin Gouwanda, Alpha A. Gopalai, Yu Zheng Chong
Summary: The study used dynamic musculoskeletal modelling simulation to investigate the impact of asymmetrical stiff knee gait on the knee joint and examine muscle behavior. The results showed that in asymmetrical gait, the braced knee experienced limited range of motion with smaller flexion moment, and there were significant differences in muscle forces between normal and abnormal conditions. This suggests that musculoskeletal modelling simulation is a valuable tool for detecting differences in gait patterns.
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING
(2021)
Article
Orthopedics
Rebecca J. Spatholt, Chelsea E. Minoughan, Cynthia Gooch, Samuel P. Harms, Michal L. Taylor, Marc T. Galloway, Jason T. Shearn
Summary: Our current understanding of knee mechanics and ACL function is limited to data recorded during simulations or nonphysiologic loads. This study quantified the effects of activity level on knee mechanics and ACL forces during in vivo motions, providing valuable information for ACL reconstruction techniques.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Baptiste Ulrich, Jennifer C. Erhart-Hledik, Jessica L. Asay, Patrick Omoumi, Thomas P. Andriacchi, Brigitte M. Jolles, Julien Favre
Summary: This study analyzed knee moment parameters of 98 individuals with different medial knee osteoarthritis severity and found that 6 parameters showed significant differences among severity groups, and 5 parameters were significantly correlated with disease severity. A reliable severity index was also proposed, which could be used to assess knee moments comprehensively.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Orthopedics
M. A. Hunt, J. M. Charlton, D. T. Felson, A. Liu, G. J. Chapman, A. Graffos, R. K. Jones
Summary: The study found a moderate relationship between frontal plane rearfoot angle and knee adduction moment (KAM), which was mainly influenced by frontal plane knee kinematics. Other variables did not significantly alter this relationship.
OSTEOARTHRITIS AND CARTILAGE
(2021)
Article
Biotechnology & Applied Microbiology
Jeheon Moon, Dohoon Koo, Sungmin Kim, Siddhartha Bikram Panday
Summary: The study aimed to investigate the impact of increased sprinting velocity on ACL load, knee joint load, and activation of femoral muscles using musculoskeletal modeling. Results showed that ACL load, knee joint adduction, and internal rotation moment increased with sidestep cutting velocity, significantly higher than during sprinting at a similar velocity. The co-contraction index of femoral muscles decreased with increasing sprinting velocity during sidestep cutting, while no significant differences were observed during running at different sprinting conditions. Factors such as knee joint shear force, extended landing posture, internal rotation moment, and femoral muscle activity imbalance were suggested to influence the increase of ACL load during a sidestep cutting maneuver.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Orthopedics
Troy Blackburn, Darin A. Padua, Brian Pietrosimone, Todd A. Schwartz, Jeffrey T. Spang, Jonathan S. Goodwin, Derek R. Dewig, Chris D. Johnston
Summary: This study evaluated the effects of whole-body vibration (WBV) and local muscle vibration (LMV) on gait biomechanics in individuals with ACLR. LMV decreased the vGRF loading rate significantly, while WBV increased the peak internal knee extension moment. These findings suggest that vibration has the potential to mitigate aberrant gait biomechanics and reduce the risk of posttraumatic knee osteoarthritis following ACLR.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2021)
Article
Sport Sciences
Harvi F. Hart, Trevor B. Birmingham, Prasanna Sritharan, Lisa K. Fischer
Summary: This study aimed to investigate the effect of walking cadence on knee flexion angular impulse and peak external flexion moment in patients with patellofemoral osteoarthritis (OA). The results showed that walking with increased cadence can decrease knee flexion angular impulse and peak knee flexion moment, while walking with decreased cadence can increase these measures.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2023)
Article
Sport Sciences
Naoaki Ito, Jacob J. Capin, Ashutosh Khandha, Thomas S. Buchanan, Karin Gravare Silbernagel, Lunn Snyder-Mackler
Summary: This study investigates the impact of BPTB graft harvest on patellar tendon properties and suggests that BPTB graft patients may experience longer neuromuscular deficits post-surgery, even up to two years after the procedure.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Chemistry, Analytical
Jaewook Kim, Yekwang Kim, Seonghyun Kang, Seung-Jong Kim
Summary: The Myosuit, an FDA-approved soft wearable robot, assists walking by providing hip and knee extension torque. Studies have shown that wearing the Myosuit can reduce the demand on knee extensor muscles and maintain natural walking patterns.
Article
Automation & Control Systems
Jeongsu Park, Daeho Lee, Kyoungchul Kong
Summary: This paper proposes a mechanism for shock absorption in powered exoskeletons, which is integrated into the WalkON Suit for complete paraplegics. The aim is to address the issue of repetitive large impacts on ride comfort and musculoskeletal damage. The mechanism and gait pattern generation algorithm were verified through experiments with a human subject.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2023)
Article
Biophysics
Baptiste Ulrich, Luis C. Pereira, Brigitte M. Jolles, Julien Favre
Summary: Shortening stride length has been proposed for gait retraining in medial knee osteoarthritis, but its effects have not been assessed in this patient population. This study found that reducing stride length can decrease knee adduction and flexion moments in some patients with medial knee osteoarthritis. Further research is needed to explore dose-response relationships and long-term effects, but these findings suggest that stride length modifications could be easily incorporated into rehabilitation protocols.
JOURNAL OF BIOMECHANICS
(2023)
Article
Rehabilitation
Marlene Mauch, Ramona Ritzmann, Christophe Lambert, Markus Wenning, Clara Ebner, Leonie Hartl, Albrecht H. Heitner, Jochen Paul, Christoph Centner
Summary: The study showed that patients with primary and secondary ACL ruptures had significantly reduced maximal knee torques in both the non-injured and injured leg before surgical reconstruction compared to healthy controls.
BMC SPORTS SCIENCE MEDICINE AND REHABILITATION
(2022)
Article
Clinical Neurology
Chang Liu, Jill L. L. McNitt-Gray, James M. M. Finley
Summary: This study examined the biomechanical effects of reactive control strategies following forward losses of balance in post-stroke individuals. The results showed that post-stroke participants had larger increases in forward angular momentum compared to neurotypical individuals when perturbations were applied to the paretic limb. Neurotypical individuals were able to coordinate reaction forces generated by both legs to reduce forward angular impulse, while post-stroke individuals did not reduce forward angular impulse or increase leading limb impulse using their paretic limb. Additionally, individuals with poorer balance and greater motor impairment made less use of the paretic limb to reduce forward momentum. These findings suggest that paretic deficits limit the ability to recover from forward loss of balance.
FRONTIERS IN NEUROLOGY
(2022)
Article
Orthopedics
Koji Iwasaki, Yasumitsu Ohkoshi, Yoshiaki Hosokawa, Shuya Chida, Kengo Ukishiro, Kensaku Kawakami, Sho'ji Suzuki, Tatsunori Maeda, Tomohiro Onodera, Eiji Kondo, Norimasa Iwasaki
Summary: This study aimed to assess the association between the pelvis-knee-ankle angle (PKA) and knee adduction moment (KAM) following high tibial osteotomy (HTO) and patient-reported outcomes. The results showed that PKA was significantly correlated with KAM peaks in patients with varus knee osteoarthritis after HTO, while hip-knee-ankle angle (HKA) did not show significant correlation.
AMERICAN JOURNAL OF SPORTS MEDICINE
(2023)
Article
Orthopedics
J. R. Williams, K. Neal, A. Alfayyadh, J. J. Capin, A. Khandha, K. Manal, L. Snyder-Mackler, T. S. Buchanan
Summary: The study evaluated patellofemoral cartilage health 24-months after ACL reconstruction (ACLR) using quantitative magnetic resonance imaging (qMRI) and assessed its association with patellofemoral contact forces and knee mechanics during gait 3 months after surgery. The results showed prolonged T2 relaxation times in the involved limb's trochlear cartilage, indicating worse cartilage health. No differences were found in the patellar cartilage, and significant negative associations were observed between the biomechanical variables of interest and trochlear T2 relaxation times at 24-months in the involved limb.
OSTEOARTHRITIS AND CARTILAGE
(2023)
Article
Neurosciences
Nina Gras, Torsten Brauner, Scott Wearing, Thomas Horstmann
Summary: This study aimed to investigate the challenge posed by progressively unstable balance devices to bipedal stance during early functional rehabilitation in THA patients. The results showed that increasingly compliant balance pads provided a progressive challenge, while the challenge posed by the oscillating platform was lower and independent of the ability to stand independently.
Article
Neurosciences
Sharon M. H. Tsang, Evest H. W. Chan, Jason Y. H. Chan, Gladys P. Y. Huang, Kelly K. T. Lam, Eunice W. Y. Lam, Allan C. L. Fu, Eliza R. Sun
Summary: This study examined the differences in postural adjustments between erect, hyperlordotic, and swayback postures when facing external perturbations. The findings suggest that adopting hyperlordotic and swayback postures alters the contributions of the active and passive subsystems of the spine in postural control, potentially reducing the spine's ability to withstand loading and shear forces.
Article
Neurosciences
Hsin-yi Wang, Cheng-Yi Ho, Min-Chun Pan
Summary: This study investigated the differences in lumbar and hip movements during gait and muscle activities related to knee osteoarthritis (KOA) patients and healthy participants. The results showed that KOA patients used a hyperlordotic lumbar and hip flexed strategy, leading to excessive stress on the lower extremity joints during gait.
Article
Neurosciences
Yoshitaka Otani, Osamu Aoki
Summary: This study found that feelings of fear affect postural control but not the internal focus of attention. This finding may be useful in assessments and interventions for older adults with a fall risk.
Article
Neurosciences
Haruki Toda, Hiroaki Hobara, Mitsunori Tada
Summary: This study investigated sex differences in lower limb dynamic joint stiffness (DJS) during walking in older adults. The results showed that ankle DJS was lower in older women, which was caused by the reduced ankle plantarflexion moment. However, knee DJS did not elucidate the cause of knee osteoarthritis (OA) in older women.
Article
Neurosciences
Luis H. Cubillos, Elliott J. Rouse, Thomas E. Augenstein, Varun Joshi, Edward S. Claflin, Chandramouli Krishnan
Summary: The study found that the reliability of stiffness, viscosity, and inertia of the ankle joint was good to excellent during standing. During walking, the reliability of stiffness and viscosity was also good to excellent, while that of inertia was fair to good. The minimal detectable change (MDC) ranged widely, but was higher for inertia during walking.
Article
Neurosciences
Alexandra F. Dejong Lempke, Danielle L. Hunt, Sarah B. Willwerth, Pierre A. d'Hemecourt, William P. Meehan III, Kristin E. Whitney
Summary: Adolescent athletes alter their gait patterns throughout a marathon race, and there are correlations between biomechanical features and race performance among young marathoners.
Article
Neurosciences
Ali Esmaeili, Sayed Esmaeil Hosseininejad, Amirali Jafarnezhadgero, Valdeci Carlos Dionisio
Summary: This study investigates the effects of footwear type, navicular drop and ankle pronation on lower limb joint stiffness during running. The results show that navicular drop and dynamic ankle pronation do not affect joint stiffness, but footwear type significantly affects joint stiffness. Conventional footwear increases ankle and hip joint stiffness while reducing knee joint stiffness, which may have implications for injury risk.
Article
Neurosciences
Takahiro Watanabe, Tomoya Takabayashi, Takanori Kikumoto, Yudai Kikuchi, Shunsuke Suzuki, Shiori Hiratsuka, Masayoshi Kubo
Summary: This study suggests that there are differences in abductor hallucis activity between individuals with chronic ankle instability and ankle sprain copers, indicating neuromuscular dysfunction in these patients, which leads to pain and instability symptoms.
Letter
Neurosciences
Susan M. Linder, Mandy Miller Koop, Jay L. Alberts
Article
Neurosciences
Elza van Duijnhoven, Marit van der Veen, Fieke S. Koopman, Frans Nollet, Sjoerd M. Bruijn, Merel-Anne Brehm
Summary: Gait stability is impaired in polio survivors with plantarflexor weakness, characterized by increased step width and step length variability and lower MoSAP. These factors are related to the elevated energy cost of walking in polio survivors.
Article
Neurosciences
Rebecca Hemming, Alister du Rose, Liba Sheeran, Robert van Deursen, Valerie Sparkes
Summary: In a forward bending task, there is a relationship between trunk muscle activation and regional thoracic and lumbar kinematics in NSCLBP subgroups, indicating different motor control strategies adopted by different subgroups when performing bending tasks.
Review
Neurosciences
Carina Pohle, Linda Becker, Jochen Baumeister
Summary: This systematic review is the first to compile evidence on the effect of the menstrual cycle on postural control. The evidence regarding the influence of the menstrual cycle on postural control is unclear. However, a trend of decreased postural control from the early follicular phase to the ovulatory phase was observed in balance tasks that eliminated or altered sensory input.