Yalfani Ali, Ahadi Fatemeh, Ahmadi Mohamadreza
Department of Exercise Rehabilitation, Faculty of Sport Sciences, Bu-Ali Sina University, Hamedan, Iran.
BMC Musculoskelet Disord. 2025 Jan 3;26(1):15. doi: 10.1186/s12891-024-08198-z.
The patellofemoral joint (PFJ) stress as a primary mechanical stimulus in the patellofemoral pain (PFP) etiology is affected by plantar pressure symmetry. This study evaluated how pain exacerbation affects rear foot eversion and plantar pressure distribution symmetry.
Sixty women with PFP participated in this study. Pain intensity, rear foot eversion, and plantar pressure were evaluated in the two conditions with and without pain exacerbation during double-leg squats. The MANOVA test was used to compare pain intensity, rear foot eversion, and plantar pressure symmetry between the two conditions. The Pearson correlation was used to evaluate the relationship between the pain intensity with the rear foot eversion and the plantar pressure symmetry.
The comparison between the two conditions showed a significant difference in pain intensity (P < 0.001, η = 0.623), rear foot eversion (P < 0.001, η = 0.485), plantar pressure distribution symmetry of the right-left foot (P < 0.001, η = 0.438), forefoot and rear-foot of the right foot (P < 0.001, η = 0.607), and forefoot and rear-foot of the left foot (P < 0.001, η = 0.548). An excellent correlation was observed between the pain intensity with rear foot eversion (P < 0.001, r = 0.835) and plantar pressure distribution symmetry of the right-left foot (P < 0.001, r = 0.812), forefoot and rear-foot of the right foot (P < 0.001, r = 0.834), and forefoot and rear-foot of the left foot (P < 0.001, r = 0.811).
After the pain exacerbation, the rear foot eversion was greater, and plantar pressure asymmetrical was observed, which can help in the development of PFP severity.
髌股关节（PFJ）应力作为髌股疼痛（PFP）病因中的主要机械刺激因素，会受到足底压力对称性的影响。本研究评估了疼痛加剧如何影响后足外翻和足底压力分布对称性。
60名患有PFP的女性参与了本研究。在双腿深蹲过程中，对有疼痛加剧和无疼痛加剧这两种情况下的疼痛强度、后足外翻和足底压力进行了评估。采用多变量方差分析（MANOVA）检验来比较两种情况下的疼痛强度、后足外翻和足底压力对称性。使用皮尔逊相关性分析来评估疼痛强度与后足外翻以及足底压力对称性之间的关系。
两种情况之间的比较显示，在疼痛强度（P < 0.001，η = 0.623）、后足外翻（P < 0.001，η = 0.485）、左右足底压力分布对称性（P < 0.001，η = 0.438）、右足前足和后足（P < 0.001，η = 0.607）以及左足前足和后足（P < 0.001，η = 0.548）方面存在显著差异。在疼痛强度与后足外翻（P < 0.001，r = 0.835）以及左右足底压力分布对称性（P < 0.001，r = 0.812）、右足前足和后足（P < 0.001，r = 0.834）、左足前足和后足（P < 0.001，r = 0.811）之间观察到了极佳的相关性。
疼痛加剧后，后足外翻更大，并且观察到足底压力不对称，这可能有助于PFP严重程度的发展。
