Volume 35, Issue 7 (10-2024)
Studies in Medical Sciences 2024, 35(7): 527-533 |
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Ethics code: IR-KHU.KRC.1000.103
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Yousefian Molla R, Sadeghi H. ANALYSIS OF SYMMETRY IN THE 3D MECHANICAL POWER OF THE KNEE JOINT DURING WALKING WHILE USING AN UPPER LIMB SLING SPLINT IN YOUNG WOMEN. Studies in Medical Sciences 2024; 35 (7) :527-533
URL: http://umj.umsu.ac.ir/article-1-6324-en.html
URL: http://umj.umsu.ac.ir/article-1-6324-en.html
Assistant Professor of Sports Biomechanics, Department of Sports Biomechanics, Islamic Azad University, Central Tehran Branch, Tehran, Iran (Corresponding Author) , raziehyousefianmolla@gmail.com
Abstract: (906 Views)
Background & Aims: The way we walk and the symmetry of various joints in the lower limb, particularly the knee, which is crucial for movement and weight-bearing, can change due to immobility and splinting of the upper limb. Therefore, this research aimed to conduct a symmetry analysis of the three-dimensional maximum mechanical power of the knee joint during walking while using an upper limb splint with a sling in young women.
Materials and Methods: This study employed a quasi-experimental and cross-sectional design. All research participants provided written consent to participate after being informed about the study's details. Ethical approval was obtained from the Kinesiology Research Center of Kharazmi University. Thirty healthy female subjects met the entry and exit criteria, which included having a dominant right limb and no history of orthopedic or neurological disorders. Participants walked along a force plate in three different conditions: normal, dominant upper limb splinting, and non-dominant upper limb splinting, all while being recorded by motion analysis cameras. Based on the obtained kinetic and kinematic outputs, the mechanical power value of the dominant and non-dominant knee of the subjects was estimated in three situations to compare the three-dimensional average mechanical power of the knee joint in each of the circumstances. Independent t-test was used at a significance level of P≤0.05.
Results: The results showed that none of the values related to the knee joint's three-dimensional production and absorption power in the right and left limbs are significantly different.
Conclusion: The principle of symmetry in the knee joint is established between all three positions of dominant and non-dominant upper limb splinting. Since mechanical power is one of the important biomechanical criteria and contains kinetic and kinematic information at the same time, it may be concluded that the biomechanical symmetry of the knee joint is maintained in immobility states of the upper limb and these joint plays a more controlling role in walking.
Materials and Methods: This study employed a quasi-experimental and cross-sectional design. All research participants provided written consent to participate after being informed about the study's details. Ethical approval was obtained from the Kinesiology Research Center of Kharazmi University. Thirty healthy female subjects met the entry and exit criteria, which included having a dominant right limb and no history of orthopedic or neurological disorders. Participants walked along a force plate in three different conditions: normal, dominant upper limb splinting, and non-dominant upper limb splinting, all while being recorded by motion analysis cameras. Based on the obtained kinetic and kinematic outputs, the mechanical power value of the dominant and non-dominant knee of the subjects was estimated in three situations to compare the three-dimensional average mechanical power of the knee joint in each of the circumstances. Independent t-test was used at a significance level of P≤0.05.
Results: The results showed that none of the values related to the knee joint's three-dimensional production and absorption power in the right and left limbs are significantly different.
Conclusion: The principle of symmetry in the knee joint is established between all three positions of dominant and non-dominant upper limb splinting. Since mechanical power is one of the important biomechanical criteria and contains kinetic and kinematic information at the same time, it may be concluded that the biomechanical symmetry of the knee joint is maintained in immobility states of the upper limb and these joint plays a more controlling role in walking.
Type of Study: Research |
Subject:
Orthopedic
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