Yamazaki Junya, Muneta Takeshi, Ju Young-Jin, Koga Hideyuki, Morito Toshiyuki, Sekiya Ichiro
Section of Orthopedic Surgery, School of Medicine, Tokyo Medical and Dental University Hospital, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan.
J Orthop Sci. 2013 Mar;18(2):284-9. doi: 10.1007/s00776-012-0350-5. Epub 2013 Jan 18.
The kinematic characteristics of female anterior cruciate ligament (ACL)-injured subjects were recognized in our previous study using an electromagnetic device comparing both female control groups and male ACL-injured subjects during single-leg squatting.
To assess the kinematic characteristics of female subjects after double-bundle ACL reconstruction during single-leg squatting.
Three-dimensional motion analysis was performed for single-leg squatting in female subjects after ACL reconstruction. We evaluated the relative angles between the pelvis, thigh, and lower leg using an electromagnetic device during single-leg squatting in 28 female subjects with ACL reconstruction. All patients included in this study restored their sports performance level to 90 % or higher.
Comparing the involved leg to the uninjured leg of female subjects after ACL reconstruction, the involved leg demonstrated significantly more hip adduction and less knee varus than the uninjured leg. Comparing the anterior cruciate ligament-reconstructed female subjects to the healthy female controls, the involved leg after ACL reconstruction demonstrated significantly less hip flexion, more hip external rotation, more hip adduction, and more knee flexion than the dominant leg of the control group.
This kinematic study exhibited kinematic characteristics of ACL-reconstructed knees of female subjects. Double-bundle anterior cruciate ligament reconstruction could not quite restore the normal kinematics of female-involved legs compared with both uninjured legs of female subjects and healthy female controls. In future studies, restoring the correct alignment of ACL reconstructed knee during single-leg squatting would be expected to reduce ACL re-injury and to assist a safe return to sport activities.
在我们之前的研究中，使用电磁装置识别了女性前交叉韧带（ACL）损伤受试者的运动学特征，该研究比较了女性对照组和男性ACL损伤受试者在单腿下蹲过程中的情况。
评估女性在双束ACL重建术后单腿下蹲时的运动学特征。
对ACL重建术后的女性受试者进行单腿下蹲的三维运动分析。我们使用电磁装置在28例进行ACL重建的女性受试者单腿下蹲过程中评估骨盆、大腿和小腿之间的相对角度。本研究纳入的所有患者均将其运动表现水平恢复到了90%或更高。
比较ACL重建术后女性受试者的患侧腿和未受伤腿，患侧腿比未受伤腿表现出明显更多的髋关节内收和更少的膝关节内翻。将ACL重建的女性受试者与健康女性对照组进行比较，ACL重建术后的患侧腿比对照组的优势腿表现出明显更少的髋关节屈曲、更多的髋关节外旋、更多的髋关节内收和更多的膝关节屈曲。
这项运动学研究展示了女性ACL重建膝关节的运动学特征。与女性受试者的未受伤腿和健康女性对照组相比，双束前交叉韧带重建并不能完全恢复患侧腿的正常运动学。在未来的研究中，有望通过恢复ACL重建膝关节在单腿下蹲时的正确对线来减少ACL再次损伤，并帮助安全恢复体育活动。
