Effects of Patellofemoral Pain Syndrome on Changes in Dynamic Postural Stability during Landing in Adult Women

Chanki Kim; Seunghyeok Yeom; Seji Ahn; Nyeonju Kang; Kiwon Park; Kyoungkyu Jeon

doi:10.1155/2022/7452229

Effects of Patellofemoral Pain Syndrome on Changes in Dynamic Postural Stability during Landing in Adult Women

Appl Bionics Biomech. 2022 May 10:2022:7452229. doi: 10.1155/2022/7452229. eCollection 2022.

Authors

Chanki Kim^{1

2}, Seunghyeok Yeom², Seji Ahn^{2

3

4}, Nyeonju Kang^{3

4

5}, Kiwon Park⁶, Kyoungkyu Jeon^{2

3

4

5}

Affiliations

¹ Department of Human Movement Science, Incheon National University, Incheon, Republic of Korea.
² Functional Rehabilitation Biomechanics Laboratory, Incheon National University, Incheon, Republic of Korea.
³ Division of Sport Science, Incheon National University, Incheon, Republic of Korea.
⁴ Sport Science Institute, Incheon National University, Incheon, Republic of Korea.
⁵ Health Promotion Center, Incheon National University, Incheon, Republic of Korea.
⁶ The Department of Mechatronics Engineering, Incheon National University, Incheon, Republic of Korea.

Abstract

Background: This study investigated the effects of lower limb movements on dynamic postural stability (DPS) during drop landing in adult women with patellofemoral pain syndrome (PFPS).

Methods: Thirty-eight adult women were recruited and divided into two groups, the PFPS group and the control group. The study participants performed a single-leg drop landing from a 30 cm box, and their lower limb movements and DPS were measured. Differences between groups were examined using independent sample t-tests. In addition, stepwise multiple linear regression was used to examine the kinematic parameters that contribute to the DPS.

Results: The PFPS group had significantly lower hip flexion, internal rotation, knee flexion, ankle external rotation, pelvic oblique, tilt, rotation, and higher hip abduction, knee valgus, and ankle plantarflexion. In terms of DPS, the PFPS group had a significantly higher anteroposterior and a lower mediolateral than that of the control group. In the control group, regression analysis revealed a controlled anteroposterior using knee flexion, while the PFPS group controlled mediolateral through ankle plantarflexion.

Conclusions: Patients with PFPS experienced more shock on their knee joint during landing than patients in the control group with greater anteroposterior instability and lower mediolateral instability.