Knee Valgus Versus Knee Abduction Angle: Comparative Analysis of Medial Knee Collapse Definitions in Female AthletesSource: Journal of Biomechanical Engineering:;2020:;volume( 142 ):;issue: 012::page 0121002-1DOI: 10.1115/1.4047549Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The knee valgus angle (KVA) is heavily researched as it has been shown to correlate to anterior cruciate ligament (ACL) injuries when measured during jumping activities. Many different methods of KVA calculation are often treated as equivalent. The purpose of this study is to elucidate differences between these commonly used angles within and across activities to determine if they can indeed properly be treated as equivalent. The kinematics of 23 female athletes, D1 soccer, D1 basketball, and club soccer (height = 171.2 ± 88.9 cm, weight = 66.3 ± 8.6 kg, age = 19.8 ± 1.9 years), was analyzed using a motion capture system during activities related to their sport and daily living. The abduction KVA, measured using body fixed axes, only correlated to the two-dimensional (2D) global reference frame angle (KVA 2G) in three of the six activities (walking, squatting, and walking down stairs), and one out of six in the three-dimensional (3D) measurements (jogging). This suggests that the abduction KVA does not always relate to other versions of KVA. The KVA with reference to the pelvis coordinate system (KVA 2P) correlated to the KVA 2G in six out of six activities (r = 0.734 ± 0.037, P << 0.001) suggesting the pelvis can be utilized as a reference plane during rotating tasks, such as run-to-cut, when a fixed global system is less meaningful. Not all measures of KVA are equivalent and should be considered individually. A thorough understanding of the equivalence or nonequivalence of various measures of KVA is essential in understanding ACL injury risk.
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contributor author | Oldfather, Taylor | |
contributor author | Zabala, Michael | |
contributor author | Goodlett, Michael | |
contributor author | Murrah, William (Hank) | |
date accessioned | 2022-02-04T22:13:08Z | |
date available | 2022-02-04T22:13:08Z | |
date copyright | 9/8/2020 12:00:00 AM | |
date issued | 2020 | |
identifier issn | 0148-0731 | |
identifier other | bio-20-1118.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4275118 | |
description abstract | The knee valgus angle (KVA) is heavily researched as it has been shown to correlate to anterior cruciate ligament (ACL) injuries when measured during jumping activities. Many different methods of KVA calculation are often treated as equivalent. The purpose of this study is to elucidate differences between these commonly used angles within and across activities to determine if they can indeed properly be treated as equivalent. The kinematics of 23 female athletes, D1 soccer, D1 basketball, and club soccer (height = 171.2 ± 88.9 cm, weight = 66.3 ± 8.6 kg, age = 19.8 ± 1.9 years), was analyzed using a motion capture system during activities related to their sport and daily living. The abduction KVA, measured using body fixed axes, only correlated to the two-dimensional (2D) global reference frame angle (KVA 2G) in three of the six activities (walking, squatting, and walking down stairs), and one out of six in the three-dimensional (3D) measurements (jogging). This suggests that the abduction KVA does not always relate to other versions of KVA. The KVA with reference to the pelvis coordinate system (KVA 2P) correlated to the KVA 2G in six out of six activities (r = 0.734 ± 0.037, P << 0.001) suggesting the pelvis can be utilized as a reference plane during rotating tasks, such as run-to-cut, when a fixed global system is less meaningful. Not all measures of KVA are equivalent and should be considered individually. A thorough understanding of the equivalence or nonequivalence of various measures of KVA is essential in understanding ACL injury risk. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Knee Valgus Versus Knee Abduction Angle: Comparative Analysis of Medial Knee Collapse Definitions in Female Athletes | |
type | Journal Paper | |
journal volume | 142 | |
journal issue | 12 | |
journal title | Journal of Biomechanical Engineering | |
identifier doi | 10.1115/1.4047549 | |
journal fristpage | 0121002-1 | |
journal lastpage | 0121002-35 | |
page | 35 | |
tree | Journal of Biomechanical Engineering:;2020:;volume( 142 ):;issue: 012 | |
contenttype | Fulltext |