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Pathological knee laxity in elite women team handball players: a pilot study

机译：精英女子球队手球运动员的病理性膝关节松弛：一项初步研究

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To identify the anterior cruciate ligament (ACL) laxity thresholds and to evaluate the utility of this measure in case of onset of knee injury for elite women handball players. Anterior laxity was measured by an arthrometer. Data on 29 elite women handball players and 20 sedentary women were collected. Among the handball group, 9 participants suffered from full-thickness ACL tears. The recorded variables were the anterior knee laxities at pressure load (PL) of 134 N (PL134N) and 250 N (PL250N) on the upper calf, which allowed assessment of the inter-leg comparison by calculating the differential laxity thresholds and the differential slope coefficients. Considering the healthy knee as a reference within the injured players, the laxity thresholds were identified, and the diagnostic value of the tests was assessed. The handball players without a full-thickness tear presented lower knee laxity than the sedentary women, and 75% were diagnosed with pathologic laxity in at least one of the knee joints, compared to 10% of sedentary women. The differential laxity threshold was identified between the handball players without a full-thickness tear and those with a full-thickness tear at 1.5 mm with PL134N and 2.2 mm with PL250N. The best diagnostic result was obtained using PL250N (area under the curve = 0.95). Handball practice is associated with specific laxities that are rarely seen in the general population. The ACL laxity thresholds may be useful measures to check the state of the ACL and to suggest full-thickness tears, as joint laxity appears to be a factor contributing to ACL tears in female handball players.
机译：为了确定前交叉韧带（ACL）松弛阈值，并评估这种方法在精英女子手球运动员膝部受伤的情况下的效用。通过关节镜测量前松弛。收集了有关29名精英女子手球运动员和20名久坐女性的数据。在手球组中，有9名参与者遭受了全厚度ACL眼泪。记录的变量是上小腿在134 N（PL134N）和250 N（PL250N）的压力负荷（PL）时的前膝关节松弛度，从而可以通过计算差异松弛度阈值和差异斜率来评估腿间比较系数。考虑到健康的膝盖作为受伤运动员的参考，确定了松弛阈值，并评估了测试的诊断价值。没有全层撕裂的手球运动员的膝关节松弛程度比久坐的女性要低，并且至少有一个膝关节被诊断出患有病理性松弛的比例为久坐女性的10％。在没有全层撕裂的手球运动员和有全层撕裂的手球运动员之间，PL134N和PL250N在1.5mm和2.2mm处确定了不同的松弛阈值。使用PL250N可获得最佳诊断结果（曲线下的面积= 0.95）。手球练习与特定的放松有关，在一般人群中很少见。 ACL松弛阈值可能是检查ACL状态并建议全层撕裂的有用措施，因为关节松弛似乎是导致女性手球运动员ACL撕裂的因素。

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