Publication: The effect of mild leg length discrepancy on vertical ground reaction force in adult with height 150 cm to 170 cm
| dc.contributor.author | Zubir, Mohammad Al- Hafiz Sa’adon | |
| dc.date.accessioned | 2026-04-06T06:29:09Z | |
| dc.date.available | 2026-04-06T06:29:09Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | Introduction Leg length discrepancy is defined as condition in which paired legs are noticeably unequal. It is relatively common problem found as many as 40% to 70% of the population. Leg length discrepancy up to 2 cm is considered normal by some studies. Therefore, we conducted this study to determine the effects of leg length discrepancy of 1 cm and 2 cm to vertical ground reaction force. This study also aims to find out whether long leg or short leg were more affected in the simulated leg length discrepancy. Methodology This was a cross sectional study involving 18 healthy male subjects with height of range from 150 to 170 cm. Vertical ground reaction force was measured using gait analysis study. Reflective markers were placed on bony landmark of bilateral lower limbs to be captured by 3D motion cameras. Subjects walked on a straight walkway with a force plate to measure ground reaction force. First measurement was taken without discrepancy (0 cm) as control. Then leg length discrepancy simulated with shoe raise of 1 cm and 2 cm and vertical ground reaction force were measured repeatedly on the long and short legs. Measurement of first peak of vertical ground reaction force was taken for analysis. Vertical ground reaction force of 1 cm and 2 cm simulated leg length discrepancy was compared with control for both long and short legs and were analysed with repeated measure analysis of variance within factors. Results The first peak of vertical ground reaction force reduced gradually on long leg and increased gradually on short leg when simulated leg length discrepancy of 1 cm and 2 cm. There was significant difference of vertical ground force reaction in both 1 cm and 2 cm leg length discrepancy compare to control (0 cm). There were significant differences between comparison of measurements in short leg with 1 cm and 2 cm leg length discrepancy.Conclusion Leg length discrepancy of 1 cm and 2 cm has shown significant effect to vertical ground reaction force. Short leg had increased vertical ground reaction force with increased leg length discrepancy. However, there was no significant changes in long leg with leg length discrepancy. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/23866 | |
| dc.language.iso | en | |
| dc.subject | leg length discrepancy | |
| dc.subject | vertical ground reaction force | |
| dc.title | The effect of mild leg length discrepancy on vertical ground reaction force in adult with height 150 cm to 170 cm | |
| dc.type | Resource Types::text::thesis::master thesis | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |