Abstract：
OBJECTIVE: The aim of this study was to quantify the impact of concomitant meniscal lesions on knee laxity using a triaxial accelerometer in a large population of patients affected by anterior cruciate ligament (ACL) injury.
METHODS: A total of 326 consecutive patients (261 men and 65 women, mean age 31.3 ± 11.3) undergoing primary ACL reconstruction, were preoperatively evaluated through Lachman and pivot shift tests using a triaxial accelerometer to quantify knee laxity. An analysis based on the presence of meniscal tears assessed during surgery was performed to evaluate the impact of meniscal lesions on knee laxity.
RESULTS: The anterior tibial translation (Lachman test) presented significantly higher values in patients with medial meniscal lesions (7.3 ± 1.7 mm, p = 0.049) and both medial and lateral meniscal lesions (7.7 ± 1.6 mm, p = 0.001) compared to patients without concomitant meniscal lesions (6.7 ± 1.3 mm). Moreover, patients with both medial and lateral meniscal lesions presented significantly higher values of anterior tibial translation compared to patients with lateral meniscal lesions (p = 0.049). No statistically significant differences were found between the groups in terms of tibial acceleration (pivot shift test).
CONCLUSIONS: This study demonstrated that the contribution of concomitant meniscal lesions to knee laxity can be objectively quantified using a triaxial accelerometer in ACL-injured knees. In particular, medial meniscus lesions, alone or in association with lateral meniscus lesions, determine a significant increase of the anterior tibial translation compared to knees without meniscus tears.
METHODS: Level IV.
METHODS: A total of 326 consecutive patients (261 men and 65 women, mean age 31.3 ± 11.3) undergoing primary ACL reconstruction, were preoperatively evaluated through Lachman and pivot shift tests using a triaxial accelerometer to quantify knee laxity. An analysis based on the presence of meniscal tears assessed during surgery was performed to evaluate the impact of meniscal lesions on knee laxity.
RESULTS: The anterior tibial translation (Lachman test) presented significantly higher values in patients with medial meniscal lesions (7.3 ± 1.7 mm, p = 0.049) and both medial and lateral meniscal lesions (7.7 ± 1.6 mm, p = 0.001) compared to patients without concomitant meniscal lesions (6.7 ± 1.3 mm). Moreover, patients with both medial and lateral meniscal lesions presented significantly higher values of anterior tibial translation compared to patients with lateral meniscal lesions (p = 0.049). No statistically significant differences were found between the groups in terms of tibial acceleration (pivot shift test).
CONCLUSIONS: This study demonstrated that the contribution of concomitant meniscal lesions to knee laxity can be objectively quantified using a triaxial accelerometer in ACL-injured knees. In particular, medial meniscus lesions, alone or in association with lateral meniscus lesions, determine a significant increase of the anterior tibial translation compared to knees without meniscus tears.
METHODS: Level IV.
摘要：
目的：本研究的目的是在受前交叉韧带（ACL）损伤影响的大量患者中，使用三轴加速度计量化伴随的半月板病变对膝关节松弛的影响。
方法：总共326名连续患者（261名男性和65名女性，平均年龄31.3±11.3）进行初次ACL重建，术前通过Lachman和枢轴移位测试使用三轴加速度计量化膝关节松弛度进行评估。进行了基于手术期间评估的半月板撕裂的分析，以评估半月板病变对膝关节松弛的影响。
结果：胫骨前平移（Lachman试验）在内侧半月板病变患者中显示出较高的值（7.3±1.7mm，p=0.049）和内侧和外侧半月板病变（7.7±1.6mm，p=0.001）与没有伴随半月板病变的患者（6.7±1.3mm）相比。此外，与外侧半月板病变的患者相比，内侧和外侧半月板病变的患者的胫骨前平移值明显更高（p=0.049）。两组之间在胫骨加速度方面没有发现统计学上的显着差异（枢轴移位测试）。
结论：这项研究表明，在ACL损伤的膝关节中，可以使用三轴加速度计客观地量化伴随的半月板病变对膝关节松弛的贡献。特别是,内侧半月板病变,单独或与外侧半月板病变相关，确定与没有半月板撕裂的膝盖相比，胫骨前平移的显着增加。
方法：四级。
方法：总共326名连续患者（261名男性和65名女性，平均年龄31.3±11.3）进行初次ACL重建，术前通过Lachman和枢轴移位测试使用三轴加速度计量化膝关节松弛度进行评估。进行了基于手术期间评估的半月板撕裂的分析，以评估半月板病变对膝关节松弛的影响。
结果：胫骨前平移（Lachman试验）在内侧半月板病变患者中显示出较高的值（7.3±1.7mm，p=0.049）和内侧和外侧半月板病变（7.7±1.6mm，p=0.001）与没有伴随半月板病变的患者（6.7±1.3mm）相比。此外，与外侧半月板病变的患者相比，内侧和外侧半月板病变的患者的胫骨前平移值明显更高（p=0.049）。两组之间在胫骨加速度方面没有发现统计学上的显着差异（枢轴移位测试）。
结论：这项研究表明，在ACL损伤的膝关节中，可以使用三轴加速度计客观地量化伴随的半月板病变对膝关节松弛的贡献。特别是,内侧半月板病变,单独或与外侧半月板病变相关，确定与没有半月板撕裂的膝盖相比，胫骨前平移的显着增加。
方法：四级。
