Imaging Studies of the Mechanical and Architectural Characteristics of the Human Achilles Tendon in Normal, Unloaded and Rehabilitating Conditions

Sinha, Shantanu; Kinugasa, Ryuta

doi:10.5772/34128

Cited by 2 publications

(1 citation statement)

References 55 publications

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“…This suggests a short moment arm in extreme plantarflexion that translates to higher tendon loading. Our modeling investigation revealed that the constraint to the posterior movement of the Achilles tendon due to a presence of inflection point reduces the moment arm at the ankle over a wide range of ankle angles [13]. Thus, people with highly curved tendons experience higher tendon loads, resulting in a higher risk of Achilles tendon ruptures.…”

Section: Discussionmentioning

confidence: 87%

Biomechanical Gain in Joint Excursion from the Curvature of the Achilles Tendon: Role of the Geometrical Arrangement of Inflection Point, Center of Rotation, and Calcaneus

et al. 2021

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The dorsal movement of the Achilles tendon during ankle rotation is restricted by anatomical obstructions. Previously, we demonstrated that the anatomical obstruction provides a gain (gainAT) in the proximal displacement of the calcaneus compared to the change in the Achilles tendon length. Here, we empirically validate and extend our previous modeling study by investigating the effects of a broad range of obstruction locations on gainAT. The largest gainAT could be achieved when the obstruction was located on the most ventral and distal sides within the physiological range of the Achilles tendon, irrespective of the ankle position.

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Section: Discussionmentioning

confidence: 87%

Biomechanical Gain in Joint Excursion from the Curvature of the Achilles Tendon: Role of the Geometrical Arrangement of Inflection Point, Center of Rotation, and Calcaneus

et al. 2021

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Anatomical insights into the median septum on soleal vein network and deep vein thrombosis risk

Tabira,

Iwanaga,

Tanaka

et al. 2024

Thrombosis J

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The high incidence of deep vein thrombosis (DVT) in evacuees has been recognized since the 2004 Niigata-Chuetsu Earthquake in Japan. We hypothesized that the number and location of communicating branches of the soleal veins might influence thrombus development and that the median septum of the soleus muscle influences the venous network of the soleal veins. This study aimed to investigate how the network of soleal veins varies with the shape and thickness of the median septum and to elucidate factors predisposing soleal veins to DVT. The lower legs of 30 sides from 15 formalin-preserved cadavers were observed. The central soleal vein, the predilection site for thrombus among the six veins within the soleus muscle, divides into three branches: medial, central, and lateral. The soleus muscle has a unique architecture with converging muscle fibers on the anterior surface of the median septum. We examined the positional relationship between the central soleal vein and the median septum. The median septum morphology was either straight (14 sides, 46.7%) or curved (16 sides, 53.3%). The number of communicating branches was significantly higher in the curved type. The curved type also had a communicating vein penetrating the median septum, with the central branch passing deeper than in the straight type. The median septum could restrict the enlargement of communicating branches, causing thrombosis through disturbance of venous blood flow. Future research will clarify the median septum’s influence on the soleal vein, potentially identifying soleus muscles at high risk of developing DVT.

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Imaging Studies of the Mechanical and Architectural Characteristics of the Human Achilles Tendon in Normal, Unloaded and Rehabilitating Conditions

Cited by 2 publications

References 55 publications

Biomechanical Gain in Joint Excursion from the Curvature of the Achilles Tendon: Role of the Geometrical Arrangement of Inflection Point, Center of Rotation, and Calcaneus

Biomechanical Gain in Joint Excursion from the Curvature of the Achilles Tendon: Role of the Geometrical Arrangement of Inflection Point, Center of Rotation, and Calcaneus

Anatomical insights into the median septum on soleal vein network and deep vein thrombosis risk

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