Lower-Limb Kinematic Change during Pelvis Anterior and Posterior Tilt in Double-Limb Support in Healthy Subjects with Knee Malalignment

So Hyun Park, Min Sik Yong and Hae Yong Lee
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So Hyun Park: Department of Physical Therapy, Youngsan University, 288, Junam-ro, Yangsan-si 50510, Gyeongnam, Korea
Min Sik Yong: Department of Physical Therapy, Youngsan University, 288, Junam-ro, Yangsan-si 50510, Gyeongnam, Korea
Hae Yong Lee: Department of Physical Therapy, Youngsan University, 288, Junam-ro, Yangsan-si 50510, Gyeongnam, Korea

IJERPH, 2022, vol. 19, issue 15, 1-9

Abstract: This study aimed to investigate lower-limb kinematic changes during pelvic tilting in participants with knee malalignment. To define participants with lower-limb malalignment, the quadriceps angle (Q-angle) was used in this study. The sample population was divided into two groups in accordance with the Q-angle: the experimental group (ABQ) consisted of participants with an abnormal Q-angle greater than the normal range, and the control group (CON) consisted of participants with a normal Q-angle. All participants performed anterior and posterior pelvic tilts in double-limb support. Kinematic change in the lower limb was evaluated using a three-dimensional motion analysis system (Motion Analysis, Santa Rosa, CA, USA). The horizontal plane hip angle in the ABQ was significantly different compared with that in the CON in all positions ( p < 0.05), and no significant difference was observed in the other lower-limb kinematic variables ( p > 0.05). A significant correlation was identified only between the Q-angle and horizontal plane hip angle in all positions. Based on the results, the Q-angle was strongly related to the thigh, although it may not be related to malalignment with other segments during double-limb support.

Keywords: Q-angle; lower limb; pelvic tilt (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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