Achilles tendon moment arm in humans is not affected by inversion/eversion of the foot: a short report
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 p...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Royal Society
2018-01-01
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| Series: | Royal Society Open Science |
| Subjects: | |
| Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171358 |
| _version_ | 1831716199449231360 |
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| author | Susann Wolfram Christopher I. Morse Keith L. Winwood Emma Hodson-Tole Islay M. McEwan |
| author_facet | Susann Wolfram Christopher I. Morse Keith L. Winwood Emma Hodson-Tole Islay M. McEwan |
| author_sort | Susann Wolfram |
| collection | DOAJ |
| description | 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 positioned at 15° dorsiflexion, 0° or 15° plantarflexion using a Styrofoam wedge. In each of these positions, the foot was either 10° inverted, neutral or 10° everted using an additional Styrofoam wedge. Achilles tendon moment arm in neutral foot position was 47.93 ± 4.54 mm and did not differ significantly when the foot was positioned in 10° inversion and 10° eversion. Hence, inversion/eversion position of the foot may not considerably affect the length of the Achilles tendon moment arm. This information could be useful in musculoskeletal models of the human lower leg and foot and when estimating Achilles tendon forces during plantarflexion with the foot positioned in inversion or eversion. |
| first_indexed | 2024-12-21T00:34:51Z |
| format | Article |
| id | doaj.art-df417e37911540bc9fee8c76c2b6d27a |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-12-21T00:34:51Z |
| publishDate | 2018-01-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-df417e37911540bc9fee8c76c2b6d27a2022-12-21T19:21:49ZengThe Royal SocietyRoyal Society Open Science2054-57032018-01-015110.1098/rsos.171358171358Achilles tendon moment arm in humans is not affected by inversion/eversion of the foot: a short reportSusann WolframChristopher I. MorseKeith L. WinwoodEmma Hodson-ToleIslay M. McEwanThe 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 positioned at 15° dorsiflexion, 0° or 15° plantarflexion using a Styrofoam wedge. In each of these positions, the foot was either 10° inverted, neutral or 10° everted using an additional Styrofoam wedge. Achilles tendon moment arm in neutral foot position was 47.93 ± 4.54 mm and did not differ significantly when the foot was positioned in 10° inversion and 10° eversion. Hence, inversion/eversion position of the foot may not considerably affect the length of the Achilles tendon moment arm. This information could be useful in musculoskeletal models of the human lower leg and foot and when estimating Achilles tendon forces during plantarflexion with the foot positioned in inversion or eversion.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171358magnetic resonance imagingcentre of rotationmusculoskeletal modelling |
| spellingShingle | Susann Wolfram Christopher I. Morse Keith L. Winwood Emma Hodson-Tole 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 magnetic resonance imaging centre of rotation musculoskeletal modelling |
| title | Achilles tendon moment arm in humans is not affected by inversion/eversion of the foot: a short report |
| title_full | Achilles tendon moment arm in humans is not affected by inversion/eversion of the foot: a short report |
| title_fullStr | Achilles tendon moment arm in humans is not affected by inversion/eversion of the foot: a short report |
| title_full_unstemmed | Achilles tendon moment arm in humans is not affected by inversion/eversion of the foot: a short report |
| title_short | Achilles tendon moment arm in humans is not affected by inversion/eversion of the foot: a short report |
| title_sort | achilles tendon moment arm in humans is not affected by inversion eversion of the foot a short report |
| topic | magnetic resonance imaging centre of rotation musculoskeletal modelling |
| url | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171358 |
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