Department of Kinesiology, University of North Carolina, Greensboro, Greensboro, North Carolina, USA.
Biomechanical Laboratory, Department of Physiotherapy, Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia.
Knee Surg Sports Traumatol Arthrosc. 2024 Apr;32(4):889-895. doi: 10.1002/ksa.12138. Epub 2024 Mar 7.
Females with above-average anterior knee laxity values are at increased risk of anterior cruciate ligament (ACL) injury. The purpose of this study was to examine the effects of menarche age (MA) and menarche offset on anterior knee laxity in young, physically active women.
Anterior knee laxity (KT-2000) and menstrual characteristics (per self-report) were recorded in 686 Slovenian sportswomen from team handball, volleyball and basketball club sports (average years sport participation: 7.3 ± 3.6 years). Females were stratified into four groups based on their self-reported age at menarche: 9-11, 12, 13 and 14+ years. Anterior knee laxity was compared across MA groups using a univariate analysis of variance (ANOVA) with Bonferroni correction, with and without controlling for factors that could potentially differ between groups and influence anterior knee laxity. Females were then stratified into four groups based on the number of years they were away from their age at onset of menarche. Groups were compared using a univariate ANOVA with Bonferroni correction, with and without controlling for factors that differed between groups and could influence anterior knee laxity.
Anterior knee laxity was greater in females who attained menarche at 12 years of age (6.4 ± 1.5 mm) or younger (6.6 ± 1.6 mm) compared to 14 years of age or older (5.8 ± 1.2 mm) (p < 0.001; partial η = 0.032). Anterior knee laxity was 0.7-1.4 mm greater in females who were 5 or more years away from menarche compared to those who were within 2 years of menarche (5.8 ± 1.3 mm; p < 0.001).
Anterior knee laxity is greater in females who attained menarche at a younger age and in females who are 5 or more years postmenarche. Age of menarche represents a critical pubertal event that is easy for women to recall and may provide important insights into factors that moderate anterior knee laxity, a risk factor for ACL injury in women.
Level IV.
膝前松弛度值高于平均值的女性患前交叉韧带（ACL）损伤的风险增加。本研究的目的是检查初潮年龄（MA）和初潮时间对年轻活跃女性膝前松弛度的影响。
对来自手球、排球和篮球俱乐部运动的 686 名斯洛文尼亚女运动员的膝前松弛度（KT-2000）和月经特征（自我报告）进行了记录（平均运动年限：7.3±3.6 年）。根据自我报告的初潮年龄，女性被分为四组：9-11 岁、12 岁、13 岁和 14 岁以上。使用单因素方差分析（ANOVA）和 Bonferroni 校正，比较 MA 组之间的膝前松弛度，同时控制可能影响膝前松弛度的组间差异因素。然后，根据离初潮年龄的年数，女性被分为四组。使用单因素方差分析（ANOVA）和 Bonferroni 校正，比较组间差异，同时控制组间差异因素和可能影响膝前松弛度的因素。
12 岁或以下初潮（6.4±1.5mm）的女性膝前松弛度大于 14 岁或以上初潮（5.8±1.2mm）的女性（p<0.001；部分 η=0.032）。距初潮 5 年或以上的女性膝前松弛度比距初潮 2 年内的女性大 0.7-1.4mm（5.8±1.3mm；p<0.001）。
初潮年龄较小和初潮后 5 年以上的女性膝前松弛度较大。初潮年龄是一个重要的青春期事件，女性容易回忆起这一点，这可能为调节膝前松弛度的因素提供重要的见解，膝前松弛度是女性 ACL 损伤的一个危险因素。
IV 级。
