Rodrigues Pedro, TenBroek Trampas, Hamill Joseph
Biomechanics Laboratory, University of Massachusetts, Amherst, MA, USA.
J Appl Biomech. 2013 Apr;29(2):141-6. doi: 10.1123/jab.29.2.141.
"Excessive" pronation is often implicated as a risk factor for anterior knee pain (AKP). The amount deemed excessive is typically calculated using the means and standard deviations reported in the literature. However, when using this method, few studies find an association between pronation and AKP. An alternative method of defining excessive pronation is to use the joints' available range of motion (ROM). The purposes of this study were to (1) evaluate pronation in the context of the joints' ROM and (2) compare this method to traditional pronation variables in healthy and injured runners. Thirty-six runners (19 healthy, 17 AKP) had their passive pronation ROM measured using a custom-built device and a motion capture system. Dynamic pronation angles during running were captured and compared with the available ROM. In addition, traditional pronation variables were evaluated. No significant differences in traditional pronation variables were noted between healthy and injured runners. In contrast, injured runners used significantly more of their available ROM, maintaining a 4.21° eversion buffer, whereas healthy runners maintained a 7.25° buffer (P = .03, ES = 0.77). Defining excessive pronation in the context of the joints' available ROM may be a better method of defining excessive pronation and distinguishing those at risk for injury.
“过度”旋前常被认为是前膝疼痛（AKP）的一个风险因素。被视为过度的量通常是根据文献中报道的均值和标准差来计算的。然而，使用这种方法时，很少有研究发现旋前与AKP之间存在关联。定义过度旋前的另一种方法是使用关节的可用活动范围（ROM）。本研究的目的是：（1）在关节ROM的背景下评估旋前；（2）将这种方法与健康和受伤跑步者的传统旋前变量进行比较。36名跑步者（19名健康者，17名AKP患者）使用定制设备和运动捕捉系统测量了他们的被动旋前ROM。记录跑步过程中的动态旋前角度，并与可用ROM进行比较。此外，还评估了传统旋前变量。健康跑步者和受伤跑步者在传统旋前变量方面未发现显著差异。相比之下，受伤跑步者使用了更多的可用ROM，保持了4.21°的外翻缓冲，而健康跑步者保持了7.25°的缓冲（P = 0.03，效应量 = 0.77）。在关节可用ROM的背景下定义过度旋前可能是定义过度旋前和区分受伤风险人群的更好方法。
