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1

Parenteau, C. S., D. C. Viano, and P. Y. Petit. "Biomechanical Properties of Human Cadaveric Ankle-Subtalar Joints in Quasi-Static Loading." Journal of Biomechanical Engineering 120, no. 1 (1998): 105–11. http://dx.doi.org/10.1115/1.2834289.

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Анотація:
The biomechanical properties of human ankle-subtalar joints have been determined in a quasi-static loading condition. The moving center of rotation was determined and approximated by a fixed point. The moment-angle characteristics of the ankle-subtalar joints about the fixed center of rotation have been measured under four basic movements: dorsiflexion, plantarflexion, inversion, and eversion. The method linearly increases rotation of the calcaneus until failure, and measures the moments, forces, and linear and rotational displacements. Failure was identified as the initial drop of moment on p
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2

Purevsuren, Tserenchimed, Kyungsoo Kim, Myagmarbayar Batbaatar, SuKyoung Lee, and Yoon Hyuk Kim. "Influence of ankle joint plantarflexion and dorsiflexion on lateral ankle sprain: A computational study." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 232, no. 5 (2018): 458–67. http://dx.doi.org/10.1177/0954411918762955.

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Анотація:
Understanding the mechanism of injury involved in lateral ankle sprain is essential to prevent injury, to establish surgical repair and reconstruction, and to plan reliable rehabilitation protocols. Most studies for lateral ankle sprain posit that ankle inversion, internal rotation, and plantarflexion are involved in the mechanism of injury. However, recent studies indicated that ankle dorsiflexion also plays an important role in the lateral ankle sprain mechanism. In this study, the contributions of ankle plantarflexion and dorsiflexion on the ankle joint were evaluated under complex combinat
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3

DiLiberto, Frank E., Steven L. Haddad, Daniel H. Aslan, and Anand M. Vora. "Total Ankle Arthroplasty: Is Ankle Plantarflexion Strength Important?" Foot & Ankle Orthopaedics 4, no. 4 (2019): 2473011419S0002. http://dx.doi.org/10.1177/2473011419s00020.

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Анотація:
Category: Ankle Arthritis Introduction/Purpose: Ankle push off power, which requires gastroc-soleus muscle strength, is a critical aspect of healthy gait and increases as gait speed increases. It is therefore surprising that one-to-two-year outcomes following total ankle arthroplasty (TAA) include improved gait speed but deficient ankle power. One possible explanation for low ankle power following TAA is ankle plantarflexion weakness. Information on plantarflexion strength is extremely limited in people before or after TAA. Evaluating plantarflexion strength may inform postoperative expectatio
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4

Wolfram, Susann, Christopher I. Morse, Keith L. Winwood, Emma Hodson-Tole, and Islay M. McEwan. "Achilles tendon moment arm in humans is not affected by inversion/eversion of the foot: a short report." Royal Society Open Science 5, no. 1 (2018): 171358. http://dx.doi.org/10.1098/rsos.171358.

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Анотація:
The triceps surae primarily acts as plantarflexor of the ankle joint. However, the group also causes inversion and eversion at the subtalar joint. Despite this, the Achilles tendon moment arm is generally measured without considering the potential influence of inversion/eversion of the foot during plantarflexion. This study investigated the effect of foot inversion and eversion on the plantarflexion Achilles tendon moment arm. Achilles tendon moment arms were determined using the centre-of-rotation method in magnetic resonance images of the left ankle of 11 participants. The foot was positione
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5

Tonogai, Ichiro. "Cadaveric anatomical study of anterior and posterior ankle arthroscopic portals in ankle plantarflexion and dorsiflexion positions." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0049. http://dx.doi.org/10.1177/2473011418s00492.

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Category: Arthroscopy Introduction/Purpose: Arthroscopy of the foot and ankle, which is minimally invasive technique, is able to be used in the treatment of various foot and ankle pathologies. However, complications after anterior or posterior ankle arthroscopies have been described, such as neurovascular structures injury around portals. On the other hand, plantarflexion and dorsiflexion of the ankle joint leads movement of the neurovascular structures. However, there were a few reports about the change of the distance between each portal and nerves or vessels during motion of the ankle. The
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6

Hürmeydan, Önder Murat, Mehmet Demirel, Natig Valiyev, Turker Sahinkaya, and Önder İsmet Kılıçoğlu. "Relationship of Postoperative Achilles Tendon Elongation With Plantarflexion Strength Following Surgical Repair." Foot & Ankle International 41, no. 2 (2019): 140–46. http://dx.doi.org/10.1177/1071100719879659.

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Background: Little data exist regarding the adverse effects of Achilles tendon (AT) elongation after rupture repair on plantarflexion strength. This study aimed to investigate the effect of AT elongation measured using AT resting angle (ATRA) on the plantarflexion strength in patients with surgically treated acute AT rupture. Methods: A retrospective chart review was performed on 40 patients (15 female and 25 female) who underwent open operative repair due to an acute AT rupture. At the final follow-up, AT elongation was assessed using ATRA. Plantarflexion strength (peak torques and angle-spec
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7

Csapo, R., J. Hodgson, R. Kinugasa, V. R. Edgerton, and S. Sinha. "Ankle morphology amplifies calcaneus movement relative to triceps surae muscle shortening." Journal of Applied Physiology 115, no. 4 (2013): 468–73. http://dx.doi.org/10.1152/japplphysiol.00395.2013.

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Анотація:
The present study investigated the mechanical role of the dorsoventral curvature of the Achilles tendon in the conversion of the shortening of the plantarflexor muscles into ankle joint rotation. Dynamic, sagittal-plane magnetic resonance spin-tagged images of the ankle joint were acquired in six healthy subjects during both passive and active plantarflexion movements driven by a magnetic resonance compatible servomotor-controlled foot-pedal device. Several points on these images were tracked to determine the 1) path and deformation of the Achilles tendon, 2) ankle's center of rotation, and 3)
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8

Hattori, Soichi, Kentaro Onishi, Calvin K. Chan, et al. "Ultrasound-Guided Anterior Talofibular Ligament Repair With Augmentation Can Restore Ankle Kinematics: A Cadaveric Biomechanical Study." Orthopaedic Journal of Sports Medicine 10, no. 8 (2022): 232596712211113. http://dx.doi.org/10.1177/23259671221111397.

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Анотація:
Background: Anterior talofibular ligament (ATFL) repair of the ankle is a common surgical procedure. Ultrasound (US)-guided anchor placement for ATFL repair can be performed anatomically and accurately. However, to our knowledge, no study has investigated ankle kinematics after US-guided ATFL repair. Hypothesis: US-guided ATFL repair with and without inferior extensor retinaculum (IER) augmentation will restore ankle kinematics. Study Design: Controlled laboratory study; Level of evidence, 4. Methods: A 6 degrees of freedom robotic testing system was used to apply multidirectional loads to fre
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9

Waqas, Nida, Fareeha Amjad, Fiza Zulfiqar, and Saba Illyas. "Effects of Wearing High Heels on Ankle Plantarflexion." Pakistan Journal of Physical Therapy (PJPT) 4, no. 1 (2021): 12–16. http://dx.doi.org/10.52229/pjpt.v4i1.869.

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Abstract: Wearing High Heels (HH) for prolong period may cause kinetics and kinematics changes of lower extremity. It may lead to musculoskeletal deformities.Objective:To determine the effects of wearing different high heel shoes on ankle joint plantar flexion range.Methadology: 120 healthy university students who habitually wore shoes of different heel heights from 1cm to 10cm for at least 1 academic year, more than 5 days a week were selectively recruited. Participants were grouped according to their heel heights: flat, low, mid and high heels. Ankle plantarflexion was measured using univers
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10

Renstrom, P., M. Wertz, S. Incavo, et al. "Strain in the Lateral Ligaments of the Ankle." Foot & Ankle 9, no. 2 (1988): 59–63. http://dx.doi.org/10.1177/107110078800900201.

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Анотація:
Strain was measured in the normal anterior talofibular ligament (ATF) and the calcaneofibular ligament (CF) using Hall effect strain transducers in five cadaveric ankles. These measurements were made in both ligaments with the ankle in neutral position and with the foot moving from 10° dorsiflexion to 40° plantarflexion in an apparatus that permits physiologic motion. The ankle ligaments were then tested with the foot placed in six different positions that combined supination, pronation, external rotation, and internal rotation. In the neutral position, through a range of motion of 10° dorsifl
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11

Conti, Matthew S., Jonathan H. Garfinkel, Harry G. Greditzer, et al. "Position of the Posteromedial Ankle Structures in Patients Indicated for Total Ankle Replacement." Foot & Ankle Orthopaedics 5, no. 2 (2020): 247301142091732. http://dx.doi.org/10.1177/2473011420917325.

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Анотація:
Background: The posteromedial ankle structures are at risk during total ankle replacement (TAR). The purpose of our study was to investigate the distance of these structures from the posterior cortex of the tibia and talus in order to determine their anatomy at different levels of bone resection during a TAR and whether plantarflexion of the ankle reliably moved these structures posteriorly. Methods: Ten feet in 10 patients with end-stage tibiotalar arthritis indicated for a TAR were included. Preoperative magnetic resonance images were obtained with the foot in a neutral position as well as i
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12

DiLiberto, Frank, Steven Haddad, Julia Thompson, and Anand Vora. "Does Ankle Muscle Performance Mirror Improved Pain Following Total Ankle Arthroplasty?" Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0021. http://dx.doi.org/10.1177/2473011418s00212.

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Анотація:
Category: Ankle Arthritis Introduction/Purpose: Total ankle arthroplasty (TAA) outcomes include pain reduction and improved gait speed. Ankle push off power, which requires gastroc-soleus muscle strength, is a critical aspect of healthy gait and increases as gait speed increases. It appears that improvements in pain translate to improved ankle muscle performance. However, ankle power after TAA is surprisingly low. It is possible years of arthritis and latent muscle memory result in reduced gastroc-soleus muscle strength and a gait pattern reliant on proximal joints for power. Evaluating these
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13

Honda, Keita, Yusuke Sekiguchi, and Shin-Ichi Izumi. "Effect of Aging on the Trunk and Lower Limb Kinematics during Gait on a Compliant Surface in Healthy Individuals." Biomechanics 3, no. 1 (2023): 103–14. http://dx.doi.org/10.3390/biomechanics3010010.

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Older adults have a smaller effective living space and reduced physical activity. Although walking ability in various living spaces is necessary to maintain a healthy life and a high level of physical activity, it is unclear how older adults adapt to compliant surfaces when walking. The purpose of this study was to determine the differences in the trunk and lower limb kinematics while walking on a level versus compliant surface, and the effect of aging on these kinematic changes. Twenty-two healthy individuals (aged from 20–80 years) were asked to walk along a 7-m walkway at a comfortable spee
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14

Martin, RobRoy L., and Thomas G. McPoil. "Reliability of Ankle Goniometric Measurements." Journal of the American Podiatric Medical Association 95, no. 6 (2005): 564–72. http://dx.doi.org/10.7547/0950564.

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Анотація:
This article reviews the existing range-of-motion measurement literature related to ankle dorsiflexion and plantarflexion to determine whether the reliability of ankle range-of-motion measurements can be defined, how the characteristics of the study population or clinician affect reliability, and the level of responsiveness for these measures. A MEDLINE search was performed through February 2004, and 11 articles met the inclusion criteria established for this review. Ample evidence was found for intrarater reliability for ankle dorsiflexion and plantarflexion range of motion. Although some evi
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15

Diong, Joanna, Simon C. Gandevia, David Nguyen, et al. "Small amounts of involuntary muscle activity reduce passive joint range of motion." Journal of Applied Physiology 127, no. 1 (2019): 229–34. http://dx.doi.org/10.1152/japplphysiol.00168.2019.

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Анотація:
When assessing passive joint range of motion in neurological conditions, concomitant involuntary muscle activity is generally regarded small enough to ignore. This assumption is untested. If false, many clinical and laboratory studies that rely on these assessments may be in error. We determined to what extent small amounts of involuntary muscle activity limit passive range of motion in 30 able-bodied adults. Subjects were seated with the knee flexed 90° and the ankle in neutral, and predicted maximal plantarflexion torque was determined using twitch interpolation. Next, with the knee flexed 9
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16

Ihmels, Wyatt D., Kayla D. Seymore, and Tyler N. Brown. "Effect of Sex and Ankle Brace Design on Knee Biomechanics During a Single-Leg Cut." American Journal of Sports Medicine 48, no. 6 (2020): 1496–504. http://dx.doi.org/10.1177/0363546520911048.

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Background: Despite success at preventing ankle sprain, prophylactics that restrict ankle plantarflexion motion may produce deleterious knee biomechanics and increase injury risk. Purpose: To determine if ankle prophylactics that restrict plantar- and dorsiflexion motion produce changes in knee biomechanics during a single-leg cut and whether those changes differ between sexes. Study Design: Controlled laboratory study. Methods: A total of 17 male and 17 female participants performed a single-leg cut with 4 conditions: Ankle Roll Guard (ARG), lace-up brace, nonelastic tape, and an unbraced con
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17

Ge, Qincheng, Datao Xu, Zanni Zhang, Julien S. Baker, and Huiyu Zhou. "Exploring Lower Limb Biomechanical Differences in Competitive Aerobics Athletes of Different Ability Levels During Rotational Jump Landings." Bioengineering 12, no. 3 (2025): 220. https://doi.org/10.3390/bioengineering12030220.

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High-level (HL) and low-level (LL) competitive aerobics athletes demonstrate different landing patterns during rotational jump landings, resulting in differing risks of lower limb injuries. This research aimed to investigate biomechanical differences between different levels of competitive aerobics athletes during rotational jump landings. The subjects included 15 male HL athletes and 15 LL athletes. This study captured kinematics, kinetics, muscle activation, and muscle force data, calculating joint stiffness, energy dissipation, anterior tibial shear force (ATSF), and patellofemoral joint co
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18

Samakoush, Hamed Babagoltabar, and Aliasghar Norasteh. "Effect of a Neuromuscular Training on Knee Valgus, Range of Motion and Muscle Strength of Soccer Players With Dynamic Knee Valgus." Scientific Journal of Rehabilitation Medicine 12, no. 3 (2023): 486–503. http://dx.doi.org/10.32598/sjrm.12.3.8.

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Background and Aims The present study aims to investigate the effect of a neuromuscular training program on knee valgus angle, and range of motion (ROM) and muscle strength of hip and ankle in male adolescent football players with dynamic knee valgus (DKV). Valgus knee is one of the most common neuromuscular abnormalities that is involved in causing non-contact damage to the anterior cruciate ligament (ACL). Methods This is a quasi-experimental study. Participants were 25 adolescent male football players with DKV who were purposefully selected from Shahin Football Academy in Amol, Iran and ran
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19

Shih, Lih-Yuann, Jiunn-Jer Wu, and Wai-Hee Lo. "Changes in Gait and Maximum Ankle Torque in Patients with Ankle Arthritis." Foot & Ankle 14, no. 2 (1993): 97–103. http://dx.doi.org/10.1177/107110079301400208.

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Анотація:
Findings from quantitative gait analysis and maximum ankle torque were used to assess the walking pattern of patients with ankle arthritis and to correlate the changes of gait parameters and muscle strength with severity of arthritis. Gait analysis and the isokinetic maximum ankle torque test were performed in 20 patients with first to fourth degree traumatic ankle arthritis. Six patients without evidence of traumatic arthritis were used as controls. Isokinetic maximum ankle plantarflexion and dorsiflexion torques were determined with Cybex instrumentation. Force plate and foot switch data wer
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20

Kim, Jungyoon, Sungjae Hwang, Ryanghee Sohn, Younghee Lee, and Youngho Kim. "Development of an Active Ankle Foot Orthosis to Prevent Foot Drop and Toe Drag in Hemiplegic Patients: A Preliminary Study." Applied Bionics and Biomechanics 8, no. 3-4 (2011): 377–84. http://dx.doi.org/10.1155/2011/530375.

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Анотація:
We developed an active ankle-foot orthosis (AAFO) that controls dorsiflexion/plantarflexion of the ankle joint to prevent foot drop and toe drag during hemiplegic walking. To prevent foot slap after initial contact, the ankle joint must remain active to minimize forefoot collision against the ground. During late stance, the ankle joint must also remain active to provide toe clearance and to aid with push-off. We implemented a series elastic actuator in our AAFO to induce ankle dorsiflexion/plantarflexion. The activator was controlled by signals from force sensing register (FSR) sensors that de
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21

Mendez-Rebolledo, Guillermo, Rodrigo Guzmán-Venegas, Oscar Valencia, and Kohei Watanabe. "Contribution of the peroneus longus neuromuscular compartments to eversion and plantarflexion of the ankle." PLOS ONE 16, no. 4 (2021): e0250159. http://dx.doi.org/10.1371/journal.pone.0250159.

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Анотація:
Compartmentalization of animal and human skeletal muscle by multiple motor nerve branches known as the neuromuscular compartment (NMC) has been observed primarily in muscles that participate in a plane of motion. In this context, the peroneus longus muscle contributes to eversion and plantarflexion of the ankle and the presence of NMCs has been reported. However, no research has reported the selective activation of the compartments of the peroneus longus during the performance of different ankle movements. The purpose of this research was to determine the contribution of peroneus longus NMCs,
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22

Liu, Qian, Hairong Chen, Yang Song, et al. "Running Velocity and Longitudinal Bending Stiffness Influence the Asymmetry of Kinematic Variables of the Lower Limb Joints." Bioengineering 9, no. 11 (2022): 607. http://dx.doi.org/10.3390/bioengineering9110607.

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Running-related limb asymmetries suggest specific sports injuries and recovery circumstances. It is debatable if running speed affected asymmetry, and more research is required to determine how longitudinal bending stiffness (LBS) affected asymmetry. The purpose of this study was to investigate the influence of running velocity and LBS on kinematic characteristics of the hip, knee, ankle, metatarsophalangeal joint (MTP) and the corresponding asymmetry. Kinematic (200 Hz) running stance phase data were collected bilaterally for 16 healthy male recreational runners (age: 23.13 ± 1.17, height: 17
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23

Wang, TaoLi, RongZhou Zhong, ShaSha Liu, GuoJiong Hu, WenXin Niu, and YuBin Wang. "Effects of Nonelastic Taping and Dual Task on Kinematics and Kinetics of the Ankle Joint." Journal of Healthcare Engineering 2021 (February 28, 2021): 1–9. http://dx.doi.org/10.1155/2021/8866453.

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Objectives. The purpose of this experimental study was to investigate the effects of nonelastic taping and dual task on ankle kinematics and kinetics in gait analysis of healthy adults. Methods. A total of 21 healthy adults completed trials of gait analysis using a Vicon system combining ground walking with different cognitive task conditions (none, modified Stroop color/character naming, and serial-7 subtraction), with or without nonelastic taping. Ankle kinematics and kinetics including speed, ankle plantarflexion and inversion angle, ground reaction force (GRF), and stride time variability
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24

Murphy, Conor, Thomas Pfeiffer, Jason Zlotnicki, Volker Musahl, Richard Debski, and MaCalus Hogan. "Anterior-Posterior Translation and Axial Rotation of the Fibula are Significantly Increased with Sequential Disruption of the Syndesmosis." Foot & Ankle Orthopaedics 2, no. 3 (2017): 2473011417S0003. http://dx.doi.org/10.1177/2473011417s000303.

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Category: Ankle, Sports, Trauma Introduction/Purpose: Injury to the Anterior inferior tibiofibular ligament (AITFL), Posterior inferior tibiofibular ligament (PITFL) and Interosseus membrane (IOM) predicts residual symptoms in ankle sprains. Limited kinematic knowledge of the tibiofibular joint results in missed diagnosis and poor clinical outcomes. Lateral fibular displacement on radiologic assessment signifies syndesmotic disruption which dictates operative management. Previous studies demonstrated that fibular motion is multiplanar after injury. The objective of this study is to determine i
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25

Miller, D., J. Stephen, J. Calder, and H. el Daou. "THE ROLE OF THE LATERAL ANKLE COMPLEX IN CONTROLLING LAXITY OF THE ANKLE JOINT: A BIOMECHANICAL INVESTIGATION." Orthopaedic Proceedings 106-B, SUPP_7 (2024): 12. http://dx.doi.org/10.1302/1358-992x.2024.7.012.

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Анотація:
BackgroundLateral ankle instability is a common problem, but the precise role of the lateral ankle structures has not been accurately investigated. This study aimed to accurately investigate lateral ankle complex stability for the first time using a novel robotic testing platform.MethodA six degrees of freedom robot manipulator and a universal force/torque sensor were used to test 10 foot and ankle specimens. The system automatically defined the path of unloaded plantar/dorsi flexion. At four flexion angles: 20° dorsiflexion, neutral flexion, 20° and 40° of plantarflexion; anterior-posterior (
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26

Hintermann, Beat, and Benno M. Nigg. "In Vitro Kinematics of the Axially Loaded Ankle Complex in Response to Dorsiflexion and Plantarflexion." Foot & Ankle International 16, no. 8 (1995): 514–18. http://dx.doi.org/10.1177/107110079501600811.

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Анотація:
The rotational movements of the tibia and calcaneus that occur with dorsiflexion-plantarflexion and axial loading were studied in cadaver foot-leg specimens using an unconstrained testing apparatus. Independent of the foot flexion position, significant internal rotation of the tibia and eversion of the calcaneus were noted after the ankle complex was axially loaded. Independent of loading, 10° of dorsiflexion resulted in 0.1° of eversion and 2.1° of internal rotation of the tibia. Conversely, 10° of plantarflexion resulted in 1.6° of inversion and 1.3° of external rotation of the tibia. The in
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27

Wang, Zilong, Mengya Lu, Jun Wu, et al. "The Impact of Different Footwear Conditions on Lower-Limb Biomechanical Characteristics During Single-Leg Drop Landing Movements in Individuals with Functional Ankle Instability." Applied Sciences 14, no. 22 (2024): 10272. http://dx.doi.org/10.3390/app142210272.

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Анотація:
(1) Background: This study investigated the impact of different footwear conditions on the biomechanics of individuals with Functional Ankle Instability (FAI) during single-leg drop landing movements. (2) Methods: Fifteen participants with FAI and a control group were tested. Kinematics and kinetics were measured using Vicon (Model: MX13, Oxford, UK) and Kistler (Model: 9287B, Switzerland) equipment. A mixed-ANOVA analyzed the impact of footwear conditions. (3) Results: At the initial contact (IC), under the shoe-wearing condition, the FAI group exhibited a significantly smaller ankle-joint pl
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28

Zhang, Linjie, Qiaolin Zhang, Qian Liu, et al. "Dual Transverse Arch Foot Orthosis Improves Gait Biomechanics in Females with Flexible Flatfoot." Bioengineering 12, no. 4 (2025): 418. https://doi.org/10.3390/bioengineering12040418.

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Анотація:
(1) Background: Flexible flatfoot is characterized by medial arch collapse, leading to musculoskeletal impairments. We examined the effects of single-arch foot orthosis (SFO) and dual-arch foot orthosis (DFO) on arch height, kinematics, and kinetics in young females during walking and jogging. (2) Methods: Healthy females (n = 19) with flexible flatfoot were tested under three conditions: regular shoes, SFO, and DFO. Motion capture and a 3D force plate gathered biomechanical data. We also used a high-speed dual fluoroscopic imaging system (DFIS) to assess dynamic foot morphology. Outcomes incl
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29

Alwadani, Fawaz A., Huaqing Liang, and Alexander S. Aruin. "Effects of Ankle Angular Position and Standing Surface on Postural Control of Upright Stance." Motor Control 24, no. 2 (2020): 291–303. http://dx.doi.org/10.1123/mc.2019-0079.

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Анотація:
The purpose of the study was to investigate the effects of ankle angular position and standing surface type on static upright balance. Ten young adults stood on a force platform or on a firm wedge that induced 15° of either dorsiflexion or plantarflexion. In addition, a piece of foam was placed on top of the force platform and on the wedge. The center of pressure distance and velocity in the anteroposterior and mediolateral directions were calculated. Significantly larger magnitudes in most of the investigated variables were seen while standing with ankles in the dorsiflexion when compared wit
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30

Ancillao, Andrea, Eduardo Palermo, and Stefano Rossi. "Validation of Ankle Strength Measurements by Means of a Hand-Held Dynamometer in Adult Healthy Subjects." Journal of Sensors 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/5426031.

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Анотація:
Uniaxial Hand-Held Dynamometer (HHD) is a low-cost device widely adopted in clinical practice to measure muscle force. HHD measurements depend on operator’s ability and joint movements. The aim of the work is to validate the use of a commercial HHD in both dorsiflexion and plantarflexion ankle strength measurements quantifying the effects of HHD misplacements and unwanted foot’s movements on the measurements. We used an optoelectronic system and a multicomponent load cell to quantify the sources of error in the manual assessment of the ankle strength due to both the operator’s ability to hold
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31

Kragh, John F., and John A. Ward. "Radiographic Indicators of Ankle Instability: Changes with Plantarflexion." Foot & Ankle International 27, no. 1 (2006): 23–28. http://dx.doi.org/10.1177/107110070602700105.

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32

Pierrynowski, M. R. "Ankle and Subtalar Kinematics During Dorsiflexion-Plantarflexion Activities." Yearbook of Sports Medicine 2010 (January 2010): 80–81. http://dx.doi.org/10.1016/s0162-0908(09)79502-9.

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33

Moseley, Anne M., Jack Crosbie, and Roger Adams. "Normative data for passive ankle plantarflexion–dorsiflexion flexibility." Clinical Biomechanics 16, no. 6 (2001): 514–21. http://dx.doi.org/10.1016/s0268-0033(01)00030-4.

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34

Yamaguchi, Satoshi, Takahisa Sasho, Hideyuki Kato, Yuji Kuroyanagi, and Scott A. Banks. "Ankle and Subtalar Kinematics during Dorsiflexion-Plantarflexion Activities." Foot & Ankle International 30, no. 4 (2009): 361–66. http://dx.doi.org/10.3113/fai.2009.0361.

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35

Thomas, M., and H. Kuhn. "Radiographic Indicators of Ankle Instability: Changes with Plantarflexion." Fuß & Sprunggelenk 4, no. 2 (2006): 128. http://dx.doi.org/10.1016/s1619-9987(08)60300-1.

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36

Alawna, Motaz Abdalla, Bayram H. Unver, and Ertugrul O. Yuksel. "The Reliability of a Smartphone Goniometer Application Compared With a Traditional Goniometer for Measuring Ankle Joint Range of Motion." Journal of the American Podiatric Medical Association 109, no. 1 (2019): 22–29. http://dx.doi.org/10.7547/16-128.

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Background: Evaluation of range of motion (ROM) is integral to assessment of the musculoskeletal system, is required in health fitness and pathologic conditions, and is used as an objective outcome measure. Several methods are described to check ROM, each with advantages and disadvantages. Hence, this study introduces a new device using a smartphone goniometer to measure ankle joint ROM. Objective: To test the reliability of smartphone goniometry in the ankle joint by comparing it with the universal goniometer (UG) and to assess interrater and intrarater reliability for the smartphone goniomet
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37

Murphy, Conor, Thomas Pfeiffer, Jason Zlotnicki, Volker Musahl, Richard Debski, and MaCalus Hogan. "Restoration of Tibiofibular Kinematics with a Tricortical Screw or Suture Button Fixation After Syndesmotic Ankle Injuries." Foot & Ankle Orthopaedics 2, no. 3 (2017): 2473011417S0000. http://dx.doi.org/10.1177/2473011417s000063.

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Category: Ankle, Sports, Trauma Introduction/Purpose: Anterior inferior tibiofibular ligament (AITFL), Posterior inferior tibiofibular ligament (PITFL) and Interosseous membrane (IOM) disruption is a predictive measure of residual symptoms after ankle injury. In unstable injuries, the syndesmosis is treated operatively with cortical screw fixation or a suture button apparatus. Biomechanical analyses of suture button versus cortical screw fixation methods show contradicting results regarding suture button integrity and maintenance of fixation. The objective of this study is to quantify tibiofib
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38

Cabe, Taylor, Andrea Papson, Sydney Karnovsky, Jonathan Deland, and Mark Drakos. "Strength and Functional Outcomes Following Achilles Tendon Reconstruction Using Hamstring Tendon Autograft." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0017. http://dx.doi.org/10.1177/2473011418s00175.

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Category: Ankle Introduction/Purpose: Use of hamstring tendon (gracilis and/or semitendinosus) autografts with limited morbidity and positive outcomes has been well reported in knee ligament reconstructions as well as in foot and ankle applications including chronic Achilles rupture or Achilles tendinosis augmentations. Advantages of hamstring autograft reconstruction when compared to alternative procedures such as local tendon transfers, synthetic grafts, or allografts are better healing and reduced morbidity within the foot and ankle. In this study, we examined the effect of Achilles tendon
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39

Kanayama, Atsuki, Mayuka Minami, Saki Yamamoto, et al. "Examination of the Impact of Strength and Velocity of the Knee and Ankle on Gait Speed in Community-Dwelling Older Adults." Healthcare 10, no. 10 (2022): 2093. http://dx.doi.org/10.3390/healthcare10102093.

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The muscle strength of the knee extension and plantarflexion plays a crucial role in determining gait speed. Recent studies have shown that no-load angular velocity of the lower limb joints is essential for determining gait speed. However, no reports have compared the extent to which lower limb functions, such as knee extension strength, knee extension velocity, plantarflexion strength, and plantarflexion velocity, impact gait speed in a single study. Therefore, this study aimed to examine the relative importance of maximum strength and no-load angular velocity on gait speed. Overall, 164 comm
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40

Wu, Zhuang, Xu Jiang, Min Zhong, et al. "Wearable Sensors Measure Ankle Joint Changes of Patients with Parkinson’s Disease before and after Acute Levodopa Challenge." Parkinson's Disease 2020 (April 9, 2020): 1–7. http://dx.doi.org/10.1155/2020/2976535.

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Background. Previous studies found levodopa could improve the activity of the ankle joints of patients with Parkinson’s disease (PD). But ankle joint movement is composed of four motion ranges. The specific changes of four motion ranges in PD remain unknown. Objective. The purpose of this study was to decompose the complex ankle joint movement, measure ankle joint changes before and after the acute levodopa challenge test (ALCT), and investigate the effects of these parameters on gait performance. Methods. 29 PD patients and 30 healthy control subjects (HC) completed the Instrumented Stand and
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41

Tochigi, Yuki, M. James Rudert, Annunziato Amendola, Thomas D. Brown, and Charles L. Saltzman. "Tensile Engagement of the Peri-Ankle Ligaments in Stance Phase." Foot & Ankle International 26, no. 12 (2005): 1067–73. http://dx.doi.org/10.1177/107110070502601212.

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Background: Development of reconstructive operative procedures to restore normal ankle kinematics after injury requires an understanding of the biomechanics of the ankle during gait. The contribution of the peri-ankle ligaments to ankle motion control is not yet well understood. Knowledge of the tensile engagement of the peri-ankle ligaments during stance phase is necessary to achieve physiologic motion patterns. Methods: Eleven fresh-frozen cadaver ankles were subjected to a dynamic loading sequence simulating the stance phase of normal level gait. Simultaneously, ligament strain was continuo
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42

Wang, Qi, Xiao Zhou, Mengxin Cui, et al. "Comparison of Lower Limb Range of Motion in Male University Soccer Athletes with Ankle Injuries Versus Those Without." Applied Sciences 15, no. 5 (2025): 2505. https://doi.org/10.3390/app15052505.

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In soccer players, ankle injuries are a common issue that may increase lower limb imbalance. Therefore, this study investigates the relationship between the range of motion of the knee and ankle joints and lower limb imbalance in soccer players with and without ankle injuries. We recruited 50 male university soccer athletes, who were categorized into an injury group (21 players) and a non-injury group (29 players). Prior to the experimental tests, basic data were collected through a self-reported questionnaire. During the experiment, participants sequentially completed a passive knee flexion t
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43

Rhatomy, Sholahuddin, Fidelis H. Wicaksono, Noha Roshadiansyah Soekarno, Riky Setyawan, Shinta Primasara, and Nicolaas C. Budhiparama. "Eversion and First Ray Plantarflexion Muscle Strength in Anterior Cruciate Ligament Reconstruction Using a Peroneus Longus Tendon Graft." Orthopaedic Journal of Sports Medicine 7, no. 9 (2019): 232596711987246. http://dx.doi.org/10.1177/2325967119872462.

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Background: The peroneus longus tendon has been used as a graft in orthopaedic reconstruction surgery because of its comparable biomechanical strength with the native anterior cruciate ligament (ACL) and hamstring tendon. However, one of the considerations in choosing an autograft is donor site morbidity. Purpose/Hypothesis: This study aimed to compare ankle eversion and first ray plantarflexion strength between the donor site and its contralateral site after ACL reconstruction. The study hypothesis was that strength measurements will be different between the harvest site and contralateral hea
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44

Baxter, Josh R., Thomas A. Novack, Herman Van Werkhoven, David R. Pennell, and Stephen J. Piazza. "Ankle joint mechanics and foot proportions differ between human sprinters and non-sprinters." Proceedings of the Royal Society B: Biological Sciences 279, no. 1735 (2011): 2018–24. http://dx.doi.org/10.1098/rspb.2011.2358.

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Анотація:
Recent studies of sprinters and distance runners have suggested that variations in human foot proportions and plantarflexor muscle moment arm correspond to the level of sprint performance or running economy. Less clear, however, is whether differences in muscle moment arm are mediated by altered tendon paths or by variation in the centre of ankle joint rotation. Previous measurements of these differences have relied upon assumed joint centres and measurements of bone geometry made externally, such that they would be affected by the thickness of the overlying soft tissue. Using magnetic resonan
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45

Silver-Thorn, Barbara, Angela Herrmann, Thomas Current, and John McGuire. "Effect of ankle orientation on heel loading and knee stability for post-stroke individuals wearing ankle-foot orthoses." Prosthetics and Orthotics International 35, no. 2 (2011): 150–62. http://dx.doi.org/10.1177/0309364611399146.

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Background: Those who experience lower extremity weakness or paralysis following a stroke often exhibit gait deviations caused by the inability to completely lift their foot during swing. An ankle-foot orthosis (AFO) is commonly prescribed for individuals post stroke with this mobility impairment. Study design: Randomized controlled trial. Objectives: To determine whether significant differences could be observed in post-stroke individuals ambulating with an experimental AFO set at three different ankle orientations. Methods: Gait analysis was conducted for eight post-stroke individuals ambula
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46

Zhao, Jiongxiang, Enze Shao, Julien S. Baker, Ee-Chon Teo, and Yaodong Gu. "The effect of immediate neuromuscular training on ankle biomechanics in individuals with functional ankle instability." Molecular & Cellular Biomechanics 21 (July 8, 2024): 162. http://dx.doi.org/10.62617/mcb.v21.162.

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Functional ankle instability arises from recurrent ankle sprains. Neuromuscular training is employed to enhance ankle stability in individuals who experience functional ankle instability. The study involved 24 male university students with functional ankle instability, undergoing ankle neuromuscular training on three surfaces. The OpenSim musculoskeletal model assessed effects on ankle kinematics, kinetics, and muscle activity. Using one-way repeated measures ANOVA and one-dimensional statistical non-parametric mapping to distinguish differences among training surfaces. The study aimed to comp
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47

Rolle, William A., Gerald J. Herbison, Keith L. Wapner, and Mark E. Schweitzer. "Traumatic Focal Posterior Tibialis Muscle Denervation." Foot & Ankle International 16, no. 6 (1995): 363–67. http://dx.doi.org/10.1177/107110079501600609.

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Анотація:
The purpose of this case presentation is to demonstrate posterior tibialis muscle (PTM) denervation as a cause of traumatic plantarflexion inversion weakness. In a 42-year-old woman, severe pain, swelling, and ecchymosis over the medial aspect of her left ankle developed after she twisted it while playing tennis. Plantarflexion inversion weakness developed (grade 3/5). The strength of all other muscle groups of the lower extremity was normal. Her pin and light touch sensation were normal in the left lower extremity. Deep tendon reflexes were equal and active at both knees and ankles. A magneti
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48

Komistek, Richard D., James B. Stiehl, Frederick F. Buechel, Eric J. Northcut, and Mary E. Hajner. "A Determination of Ankle Kinematics Using Fluoroscopy." Foot & Ankle International 21, no. 4 (2000): 343–50. http://dx.doi.org/10.1177/107110070002100412.

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Анотація:
In vivo weight-bearing studies utilizing dynamic video fluoroscopy have been shown to offer an accurate and reproducible method for determining the kinematics of a joint. The purpose of this study was to evaluate translational and rotational motions of the distal tibia relative to the talus in the sagittal and frontal planes. Ten subjects, each having a normal ankle and a total ankle arthroplasty on the opposite side (Buechel-Pappas Total Ankle, Endotec, South Orange, NJ), were studied under in vivo, weight-bearing conditions using video fluoroscopy. All ten subjects were judged to have a succ
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49

Patel, Neel, Thomas Rudolf Pfeiffer, Jan-Hendrik Naendrup, et al. "Posterior Translation of the Fibula is a Critical Factor in the Stability of the Syndesmosis After Injury and Repair." Orthopaedic Journal of Sports Medicine 6, no. 7_suppl4 (2018): 2325967118S0012. http://dx.doi.org/10.1177/2325967118s00120.

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Анотація:
Objectives: Anterior inferior tibiofibular ligament (AITFL), posterior inferior tibiofibular ligament (PITFL), and interosseous membrane (IOM) disruption is a predictive measure of residual symptoms after an ankle injury. Unstable syndesmotic injuries are typically treated surgically with cortical screw or suture button fixation. Previous studies have shown contradicting findings regarding the effects of partial syndesmotic injuries and different surgical fixation methods on tibiofibular kinematics. Thus, the objective of this study was to quantify tibiofibular joint motion with sequential dis
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50

Dao, Duc minh, P.D. Phuoc, and T.X. Tuy. "Research control for ankle joint rehabilitation device." Journal of Mechanical Engineering and Sciences 16, no. 1 (2022): 8743–53. http://dx.doi.org/10.15282/jmes.16.1.2022.08.0691.

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Анотація:
The ankle is one of the joints that is often injured when playing sports or in daily activities. Improper handling due to lack of knowledge about the ankles causes these injuries to last long, cause disability and affect our daily activities. Rehabilitation treatment is important for the purpose of maintaining and improving the mobility of joints. This paper, presenting the experimental results of the training device to rehabilitate ankle joints for human in dorsiflexion/plantarflexion exercises. The PD controller has been applied and controlled device. During the training, the angle of the an
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