The influence of knee position on ankle dorsiflexion - a biometric study.
The influence of knee position on ankle dorsiflexion - a biometric study.
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DOI：
10.1186/1471-2474-15-246
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发表时间：
2014-07-23
影响因子：
2.3
通讯作者：
Polzer H
中科院分区：
文献类型：
--
作者：
Baumbach SF;Brumann M;Binder J;Mutschler W;Regauer M;Polzer H
通过比较膝关节伸直和屈曲时的踝关节背屈（ADF）情况，可诊断出腓肠肌紧张（MGT）。尽管存在多种测量技术，但消除腓肠肌对ADF影响所需的膝关节屈曲程度仍不明确。本研究的目的是确定消除腓肠肌对ADF的限制作用所需的最小膝关节屈曲程度。
对20名年龄在18 - 40岁的无症状志愿者（50%为女性）的双侧ADF进行了前瞻性评估，评估时膝关节分别处于六种不同的屈曲角度（0°、20°、30°、45°、60°、75°，还有弓步姿势）。测试按照标准化方案进行，由两名观察者分别在非负重和负重情况下进行。统计分析包括描述性统计、t检验、重复测量方差分析和组内相关系数（ICC）。
对20名平均年龄为27±4岁的个体进行了测试。未观察到两侧之间有显著差异。非负重时，膝关节伸直时的平均ADF[95%置信区间]为4°[1° - 8°]，膝关节屈曲75°时为20°[16° - 24°]。负重时，膝关节伸直时平均ADF为25°[22° - 28°]，膝关节屈曲75°时为39°[36° - 42°]。膝关节屈曲20°与完全伸直之间的平均差异，非负重时为15°[12° - 18°]，负重时为13°[11° - 16°]。仅在膝关节完全伸直和屈曲20°之间发现ADF有显著差异。进一步的膝关节屈曲并没有增加ADF。
膝关节屈曲20°可完全消除腓肠肌对ADF的限制作用。这一知识对于设计评估MGT的标准化临床检查至关重要。
Musculus gastrocnemius tightness (MGT) can be diagnosed by comparing ankle dorsiflexion (ADF) with the knee extended and flexed. Although various measurement techniques exist, the degree of knee flexion needed to eliminate the effect of the gastrocnemius on ADF is still unknown. The aim of this study was to identify the minimal degree of knee flexion required to eliminate the restricting effect of the musculus gastrocnemius on ADF. Bilateral ADF of 20 asymptomatic volunteers aged 18-40 years (50% female) was assessed prospectively at six different degrees of knee flexion (0°, 20°, 30°, 45°, 60°, 75°, Lunge). Tests were performed following a standardized protocol, non weightbearing and weightbearing, by two observers. Statistics comprised of descriptive statistics, t-tests, repeated measurement ANOVA and ICC. 20 individuals with a mean age of 27 ± 4 years were tested. No significant side to side differences were observed. The average ADF [95% confidence interval] for non weightbearing was 4° [1°-8°] with the knee extended and 20° [16°-24°] for the knee 75° flexed. Mean weightbearing ADF was 25° [22°-28°] for the knee extended and 39° [36°-42°] for the knee 75° flexed. The mean differences between 20° knee flexion and full extension were 15° [12°-18°] non weightbearing and 13° [11°-16°] weightbearing. Significant differences of ADF were only found between full extension and 20° of knee flexion. Further knee flexion did not increase ADF. Knee flexion of 20° fully eliminates the ADF restraining effect of the gastrocnemius. This knowledge is essential to design a standardized clinical examination assessing MGT.
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影响因子：
2.7
作者：
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DOI：
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