Ankle and foot complex

Angin, Salih; Demırbüken, İlkşan

doi:10.1016/b978-0-12-812162-7.00023-0

Cited by 10 publications

(10 citation statements)

References 135 publications

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“…It is composed of mainly type I fibres and has a high fatigue resistance to allow continuous support of body weight during stance and walking. Gastrocnemii have shorter muscle bellies and longer tendinous parts compared to the soleus and are involved during explosive movements such as jumping or at the push-off phase during late stance [19, 20]. Moreover, the length of gastrocnemii is affected by both knee and ankle joint angle while the length of soleus, a one-joint muscle, is dictated only by the ankle joint angle.…”

Section: Discussionmentioning

confidence: 99%

“…The gastrocnemii sub-tendons occupy the posterior-lateral-anterior region of the Achilles tendon, surrounding the soleus sub-tendon which occupies the medial-posterior region [11, 18]. The gastrocnemii and soleus muscles are activated differently during locomotion [19, 20]. Therefore, the observed mechanical behaviour of the whole Achilles tendon is likely the result of a combination of factors including the morphology and the mechanical properties of sub-tendons, various force level from different muscle bellies, and the interface properties between sub-tendons [8].…”

Section: Introductionmentioning

confidence: 99%

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An equine tendon model for studying intra-tendinous shear in tendons that have more than one muscle contribution

Yin

McCarthy

Birch

2021

Preprint

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Human Achilles tendon is composed of three smaller sub-tendons and exhibits non-uniform internal displacements, which decline with age and after injury, suggesting a potential role in the development of tendinopathies. Studying internal sliding behaviour is therefore important but difficult in human Achilles tendon. Here we propose the equine deep digital flexor tendon (DDFT) and its accessory ligament (AL) as a model to understand the sliding mechanism. The AL-DDFT has a comparable sub-bundle structure, is subjected to high and frequent asymmetric loads and is a natural site of injury similar to human Achilles tendons. Equine AL-DDFT were collected and underwent whole tendon level (n=7) and fascicle level (n=7) quasi-static mechanical testing. Whole tendon level testing was performed by sequentially loading through the proximal AL and subsequently through the proximal DDFT and recording regional strain in the free structures and joined DDFT and AL. Fascicle level testing was performed with focus on the inter-sub-bundle matrix between the two structures at the junction. Our results demonstrate a significant difference in the regional strain between the joined DDFT and AL and a greater transmission of force from the AL to the DDFT than vice versa. These results can be partially explained by the mechanical properties and geometry of the two structures and by differences in the properties of the interfascicular matrices. In conclusion, this tendon model successfully demonstrates that high displacement discrepancy occurs between the two structures and can be used as an easy-access model for study intra-tendinous shear mechanics at the sub-tendon level.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An equine tendon model for studying intra-tendinous shear in tendons that have more than one muscle contribution

Yin

McCarthy

Birch

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Due to the fact that supination and pronation are spatial motions, their rotation axis do not concur with any of the body's geometrical elements. [18] This axis in considered to be at a 10° rotation displacement away from the transversal axis within the frontal plane and a 6° displacement within the transversal plane. The posterior view of the axis positioning is presented in Fig.…”

Section: Fig 7 the Fundamental Motions Of The Foot Within The Ankle Jointmentioning

confidence: 99%

Contributions regarding 3D modelling of biomechanics of the foot

et al. 2021

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Within this paper, a detailed study is elaborated regarding the human foot during both orthostatic and gait, the main goal being to develop 3D models which are very useful in the foot motion and loading state research. In order to elaborate the accurate 3D modelling of the human foot assembly, a thorough biomechanical study is done. Such a study was required due to the fact of the high anatomical complexity of the motions within the foot, taking into consideration the 26 bones and 33 joints consisting it. The research aims the CAD modelling of the biomechanics of the healthy subjects alongside with predisposed pathological conditions. The resulting models will have important utility in both educational field and for further CAE approaches and studies.

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“…The importance of mobility and stability in running can be seen when the body position maintains the body to stay upright when running, the legs that always move with the knees slightly bent, and the soles of the feet as a fulcrum must remain stable, so it is important to have good stability in running on the spine, ankles, and knees (Angin & Demirbüken, 2020;Ogaya et al, 2021). The drive to run is caused by a strong extension of the hip joint, knees, and ankles, which causes the body to project forward and upward towards the next step (Davis, 2016;Ogaya et al, 2021;Pandy et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Effect Of Improving Lumbar Mobility, Spinal Stability ; With Core Stability Training To Achieve Per-sonal Best Runner

Zulhasniati,

Prasetyo,

Susanto

et al. 2024

Retos

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Running consists of simple basic movements, and to achieve these simple basic movements requires good mobility and stability, because the weakening of mobility and stability of the body causes misalignment or weakness of the legs so as to interfere with the absorption or propulsion phase in leg movement while running. Apply appropriate exercise methods to improve lumbar mobility and spinal stability. One training method that can be used is the core stability training method. Core stability is an exercise model to improve the ability to control the position of trunk movement through the pelvis and legs to allow optimal motion production. This study aims to ascertain whether core stability training can improve lumbar mobility and spinal stability in running athletes. The study used an experimental method with a research pattern using a group pretest-posttest design. 10 running athletes were sampled according to the criteria to be treated in the form of core stability training for 6 weeks. The athletes were assessed before and after training using the Functional Reach Test and Unilateral Hip Bridge Endurance. This study showed that there was a significant effect between core stability training and lumbar mobility (P = 0.000) and spinal stability (P = 0.000) in athletes. The results of this study show that the application of core stability exercises can increase the ability of lumbar mobility and spinal stability, so if the core stability exercises are done properly, they can increase stability in the spine and mobility in the lumbar, which causes dynamic limb movement to be more efficient. Key Words: athletics; Core Stability; Lumbar Mobility; spine stability.

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Ankle and foot complex

Cited by 10 publications

References 135 publications

An equine tendon model for studying intra-tendinous shear in tendons that have more than one muscle contribution

An equine tendon model for studying intra-tendinous shear in tendons that have more than one muscle contribution

Contributions regarding 3D modelling of biomechanics of the foot

Effect Of Improving Lumbar Mobility, Spinal Stability ; With Core Stability Training To Achieve Per-sonal Best Runner

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