Adel Jilan, Hamoda Reham E, Mohamed Ayah Mahmoud, Balbaa Alaa Eldin, Neamat Allah Neama H, Hamada Hamada Ahmed
Department of Physical Therapy for Musculoskeletal Disorders, Faculty of Physical Therapy, Kafrelsheikh University, Kafrelsheikh, Egypt.
Department of Physical Therapy for Woman's Health, Faculty of Physical Therapy, Cairo University, Giza, Egypt.
Front Physiol. 2024 Apr 26;15:1286406. doi: 10.3389/fphys.2024.1286406. eCollection 2024.
Patellofemoral osteoarthritis (PF OA) is exceptionally predominant and limiting. However, little is known about the risk factors that contribute to its onset and progression. The aim of this study was to decide if women with PF OA descend stairs using different muscular activation strategies compared to similarly aged healthy controls. Thirty-one women with isolated PF OA and 11 similarly aged healthy women took part in this study. The activation onset and duration of PF OA in vastus medialis oblique (VMO), vastus lateralis (VL), gluteus medius (GM), transversus abdominis (TrA), and multifidus muscles were evaluated during the stair descent task using surface electromyography (EMG). There was a non-significant difference between women with PF OA and healthy controls regarding all tested variables, except for the GM activation onset that was significantly delayed in women with PF OA, with the -value of 0.011. The causes of PF OA differ and might not always be due to a lack of quadriceps strength or VMO activation deficiency, and prospective longitudinal studies are required to confirm this assumption.
髌股关节炎（PF OA）极为常见且具有局限性。然而，对于导致其发病和进展的风险因素却知之甚少。本研究的目的是确定与年龄相仿的健康对照组相比，患有PF OA的女性下楼梯时是否采用不同的肌肉激活策略。31名患有单纯PF OA的女性和11名年龄相仿的健康女性参与了本研究。在楼梯下降任务期间，使用表面肌电图（EMG）评估股内侧斜肌（VMO）、股外侧肌（VL）、臀中肌（GM）、腹横肌（TrA）和多裂肌中PF OA的激活起始时间和持续时间。除GM激活起始时间在患有PF OA的女性中显著延迟（P值为0.011）外，在所有测试变量方面，患有PF OA的女性与健康对照组之间没有显著差异。PF OA的病因各不相同，可能并不总是由于股四头肌力量不足或VMO激活缺陷，需要进行前瞻性纵向研究来证实这一假设。
