患有髌股疼痛和膝关节弹响的女性在上楼梯时膝关节屈曲角度减小。
Women with patellofemoral pain and knee crepitus have reduced knee flexion angle during stair ascent.
机构信息
Sao Paulo State University (UNESP), School of Science and Technology, Physical Therapy Department, Presidente Prudente, Brazil; University of Toledo, School of Exercise and Rehabilitation Sciences, Toledo, OH, USA.
Sao Paulo State University (UNESP), School of Science and Technology, Physical Therapy Department, Presidente Prudente, Brazil; La Trobe Sports and Exercise Medicine Research Centre (LASEM), School of Allied Health, La Trobe University, Bundoora, Victoria, Australia.
出版信息
Phys Ther Sport. 2021 Mar;48:60-66. doi: 10.1016/j.ptsp.2020.12.013. Epub 2020 Dec 17.
OBJECTIVES
To compare trunk and knee biomechanics of women with and without patellofemoral pain (PFP) and knee crepitus during stair ascent.
DESIGN
Cross-sectional.
SETTING
Laboratory-based study.
PARTICIPANTS
29 women with PFP and knee crepitus (PFP); 28 women with PFP and no knee crepitus (PFP); 17 pain-free women with knee crepitus (Pain-free); and 29 pain-free women without knee crepitus (Pain-free).
MAIN OUTCOME MEASURES
Peak trunk flexion, peak knee flexion, mean knee angular velocity, knee extensor moment at peak knee flexion, peak and impulse of the knee extensor moment.
RESULTS
PFP group performed the stair ascent task with reduced peak knee flexion compared to Pain-free (p = 0.04; Effect size = -0.85) and Pain-free (p = 0.03; Effect size = -0.75). No significant differences among groups were found for peak trunk flexion (p = 0.979), knee angular velocity (p = 0.420), knee extensor moment at peak knee flexion (p = 0.933), peak (p = 0.290) and impulse (p = 0.122) of the knee extensor moment.
CONCLUSION
Women with concomitant PFP and knee crepitus demonstrated reduced knee flexion during stair ascent, but no significant differences for trunk flexion and knee extensor moment variables were found.
目的
比较膝前痛（PFP）伴弹响和不伴弹响女性，以及膝前痛不伴弹响女性与无痛无弹响女性在登梯时的躯干和膝关节生物力学。
设计
横断面研究。
地点
基于实验室的研究。
参与者
29 名 PFP 伴弹响患者（PFP 组）；28 名 PFP 不伴弹响患者（PFP 无弹响组）；17 名膝前痛伴弹响患者（无痛弹响组）；29 名膝前痛不伴弹响无痛患者（无痛无弹响组）。
主要观察指标
最大躯干屈曲度、最大膝关节屈曲度、平均膝关节角速度、最大膝关节屈曲时膝关节伸肌力矩、膝关节伸肌力矩峰值和冲量。
结果
与无痛无弹响组（p=0.04；效应量=-0.85）和无痛弹响组（p=0.03；效应量=-0.75）相比，PFP 组在登梯时膝关节最大屈曲度显著降低。各组间最大躯干屈曲度（p=0.979）、膝关节角速度（p=0.420）、最大膝关节屈曲时膝关节伸肌力矩（p=0.933）、膝关节伸肌力矩峰值（p=0.290）和冲量（p=0.122）均无显著差异。
结论
同时患有 PFP 和膝关节弹响的女性在登梯时膝关节屈曲度降低，但在躯干屈曲度和膝关节伸肌力矩变量方面无显著差异。
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