Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement
Mechanical energy fluctuation of the segments of lower limbs during walking has not been fully investigated. It was hypothesized that the segments may work as a pendulum, i.e. the kinetic and potential energies exchanged out of phase. This study aimed to investigate energy changes and recovery durin...
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| Format: | Article |
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The Royal Society
2023-03-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.230041 |
| _version_ | 1827977710653145088 |
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| author | St. Fatimah Zahrah Anwar Ying Wang Wasim Raza Graham Arnold Weijie Wang |
| author_facet | St. Fatimah Zahrah Anwar Ying Wang Wasim Raza Graham Arnold Weijie Wang |
| author_sort | St. Fatimah Zahrah Anwar |
| collection | DOAJ |
| description | Mechanical energy fluctuation of the segments of lower limbs during walking has not been fully investigated. It was hypothesized that the segments may work as a pendulum, i.e. the kinetic and potential energies exchanged out of phase. This study aimed to investigate energy changes and recovery during gait in hip replacement patients. The gait data for 12 participants with total hip replacement and 12 age-matched control was compared. The kinetic, potential and rotative energies for whole lower limb and thigh, calf and foot, were calculated. The effectiveness of a pendulum effect was analysed. Gait parameters (speeds and cadence) were calculated. The results showed that the thigh had significant effectiveness as a pendulum during gait with energy recovery coefficient of approximately 40% while the calf and foot were less like a pendulum during gait. In comparison, energy recoveries of lower limbs in the two groups were not significantly different. If the pelvis was considered as an approximate to the centre of mass, however, the control group had a higher energy recovery than total-hip-replacement group by roughly 10%. This study concluded that, unlike centre of mass energy recovery, the mechanical energy recovery mechanism in the lower limbs during walking is not affected after total hip replacement. |
| first_indexed | 2024-04-09T21:10:43Z |
| format | Article |
| id | doaj.art-48bd266464004c0da032787be9acc71b |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-04-09T21:10:43Z |
| publishDate | 2023-03-01 |
| publisher | The Royal Society |
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| series | Royal Society Open Science |
| spelling | doaj.art-48bd266464004c0da032787be9acc71b2023-03-28T20:17:14ZengThe Royal SocietyRoyal Society Open Science2054-57032023-03-0110310.1098/rsos.230041Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacementSt. Fatimah Zahrah Anwar0Ying Wang1Wasim Raza2Graham Arnold3Weijie Wang4University Department of Orthopaedic and Trauma Surgery, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, UKUniversity Department of Orthopaedic and Trauma Surgery, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, UKDepartment of Biomedical Engineering, NED University of Engineering and Technology, LEJ Campus, Karachi, PakistanUniversity Department of Orthopaedic and Trauma Surgery, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, UKUniversity Department of Orthopaedic and Trauma Surgery, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, UKMechanical energy fluctuation of the segments of lower limbs during walking has not been fully investigated. It was hypothesized that the segments may work as a pendulum, i.e. the kinetic and potential energies exchanged out of phase. This study aimed to investigate energy changes and recovery during gait in hip replacement patients. The gait data for 12 participants with total hip replacement and 12 age-matched control was compared. The kinetic, potential and rotative energies for whole lower limb and thigh, calf and foot, were calculated. The effectiveness of a pendulum effect was analysed. Gait parameters (speeds and cadence) were calculated. The results showed that the thigh had significant effectiveness as a pendulum during gait with energy recovery coefficient of approximately 40% while the calf and foot were less like a pendulum during gait. In comparison, energy recoveries of lower limbs in the two groups were not significantly different. If the pelvis was considered as an approximate to the centre of mass, however, the control group had a higher energy recovery than total-hip-replacement group by roughly 10%. This study concluded that, unlike centre of mass energy recovery, the mechanical energy recovery mechanism in the lower limbs during walking is not affected after total hip replacement.https://royalsocietypublishing.org/doi/10.1098/rsos.230041energy fluctuationenergy recoverypendulum principlelower limbswalkingtotal hip replacement |
| spellingShingle | St. Fatimah Zahrah Anwar Ying Wang Wasim Raza Graham Arnold Weijie Wang Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement Royal Society Open Science energy fluctuation energy recovery pendulum principle lower limbs walking total hip replacement |
| title | Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement |
| title_full | Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement |
| title_fullStr | Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement |
| title_full_unstemmed | Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement |
| title_short | Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement |
| title_sort | mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement |
| topic | energy fluctuation energy recovery pendulum principle lower limbs walking total hip replacement |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.230041 |
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