Dingenen Bart, Malfait Bart, Nijs Stefaan, Peers Koen H E, Vereecken Styn, Verschueren Sabine M P, Janssens Luc, Staes Filip F
J Orthop Sports Phys Ther. 2016 Aug;46(8):650-7. doi: 10.2519/jospt.2016.6278. Epub 2016 Jul 3.
Study Design Controlled laboratory study with a prospective cohort design. Background Postural stability deficits during single-leg stance have been reported in persons with anterior cruciate ligament (ACL) injury, ACL reconstruction, and chronic ankle instability. It remains unclear whether impaired postural stability is a consequence or cause of these injuries. Objectives To prospectively investigate whether postural stability deficits during single-leg stance predict noncontact lower extremity injuries. Methods Fifty injury-free female athletes performed a transition task from double-leg stance to single-leg stance with eyes closed. Center-of-pressure displacement, the main outcome variable, was measured during the first 3 seconds after the time to a new stability point was reached during single-leg stance. Noncontact lower extremity injuries were recorded at a 1-year follow-up. Results Six participants sustained a noncontact ACL injury or ankle sprain. Center-of-pressure displacement during the first 3 seconds after the time to a new stability point was significantly increased in the injured (P = .030) and noninjured legs (P = .009) of the injured group compared to the respective matched legs of the noninjured group. The area under the receiver operating characteristic curve (AUC) analysis revealed significant discriminative accuracy between groups for the center-of-pressure displacement during the first 3 seconds after the time to a new stability point of the injured (AUC = 0.814, P = .015) and noninjured legs (AUC = 0.897, P = .004) of the injured group compared to the matched legs of the noninjured group. Conclusion This preliminary study suggests that postural stability measurements during the single-leg stance phase of the double- to single-leg stance transition task may be a useful predictor of increased risk of noncontact lower extremity injury. Further research is indicated. Level of Evidence Prognosis, level 4. J Orthop Sports PhysTher 2016;46(8):650-657. Epub 3 Jul 2016. doi:10.2519/jospt.2016.6278.
采用前瞻性队列设计的对照实验室研究。背景：据报道，前交叉韧带（ACL）损伤、ACL重建和慢性踝关节不稳患者单腿站立时存在姿势稳定性缺陷。目前尚不清楚姿势稳定性受损是这些损伤的结果还是原因。目的：前瞻性研究单腿站立时的姿势稳定性缺陷是否能预测非接触性下肢损伤。方法：50名无损伤的女性运动员进行闭眼从双腿站立到单腿站立的转换任务。在单腿站立达到新的稳定点后的前3秒内测量压力中心位移，这是主要的结局变量。在1年随访中记录非接触性下肢损伤情况。结果：6名参与者发生了非接触性ACL损伤或踝关节扭伤。与未受伤组相应匹配的腿相比，受伤组受伤腿和未受伤腿在达到新稳定点后的前3秒内压力中心位移显著增加（受伤腿P = 0.030，未受伤腿P = 0.009）。受试者工作特征曲线（AUC）分析显示，与未受伤组匹配的腿相比，受伤组受伤腿（AUC = 0.814，P = 0.015）和未受伤腿（AUC = 0.897，P = 0.004）在达到新稳定点后的前3秒内压力中心位移在组间具有显著的判别准确性。结论：这项初步研究表明，在双腿到单腿站立转换任务的单腿站立阶段进行姿势稳定性测量可能是预测非接触性下肢损伤风险增加的有用指标。需要进一步研究。证据水平：预后，4级。《运动物理治疗杂志》2016年；46(8):650 - 657。2016年7月3日在线发表。doi:10.2519/jospt.2016.6278
