Dingenen Bart, Janssens Luc, Luyckx Thomas, Claes Steven, Bellemans Johan, Staes Filip F
KU Leuven, Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation Sciences, Tervuursevest 101 b1501, 3001 Heverlee, Belgium.
KU Leuven, Department of Electrical Engineering, Faculty of Engineering Technology Services, Andreas Vesaliusstraat 13, 3000 Leuven, Belgium; KU Leuven, Cardiovascular and Respiratory Rehabilitation Research Group, Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation Sciences, Tervuursevest 101 b1501, 3001 Heverlee, Belgium.
Clin Biomech (Bristol). 2015 Mar;30(3):283-9. doi: 10.1016/j.clinbiomech.2015.01.002. Epub 2015 Jan 17.
An anterior cruciate ligament injury may lead to deteriorations in postural stability. The goal of this study was to evaluate postural stability during the transition from double-leg stance to single-leg stance of both legs in anterior cruciate ligament injured subjects and non-injured control subjects with a standardized methodology.
Fifteen control subjects and 15 anterior cruciate ligament injured subjects (time after injury: mean (SD)=1.4 (0.7) months) participated in the study. Both groups were similar for age, gender, height, weight and body mass index. Spatiotemporal center of pressure outcomes of both legs of each subject were measured during the transition from double-leg stance to single-leg stance in eyes open and eyes closed conditions. Movement speed was standardized.
The center of pressure displacement after a new stability point was reached during the single-leg stance phase was significantly increased in the anterior cruciate ligament injured group compared to the control group in the eyes closed condition (P<.001). No significant different postural stability outcomes were found between both legs within both groups (P>.05). No significant differences were found during the transition itself (P>.05).
The anterior cruciate ligament injured group showed postural stability deficits during the single-leg stance phase compared to the non-injured control group in the eyes closed condition. Using the non-injured leg as a normal reference when evaluating postural stability of the injured leg may lead to misinterpretations, as no significant differences were found between the injured and non-injured leg of the anterior cruciate ligament injured group.
前交叉韧带损伤可能导致姿势稳定性下降。本研究的目的是采用标准化方法评估前交叉韧带损伤受试者和未受伤对照受试者在从双腿站立过渡到单腿站立过程中的姿势稳定性。
15名对照受试者和15名前交叉韧带损伤受试者（受伤后时间：平均（标准差）=1.4（0.7）个月）参与了本研究。两组在年龄、性别、身高、体重和体重指数方面相似。在睁眼和闭眼条件下，测量每个受试者从双腿站立过渡到单腿站立时双腿的时空压力中心结果。运动速度标准化。
在闭眼条件下，前交叉韧带损伤组在单腿站立阶段达到新的稳定点后的压力中心位移相比对照组显著增加（P<0.001）。两组内双腿之间未发现显著不同的姿势稳定性结果（P>0.05）。在过渡过程中未发现显著差异（P>0.05）。
在闭眼条件下，前交叉韧带损伤组在单腿站立阶段相比未受伤对照组表现出姿势稳定性缺陷。在评估受伤腿的姿势稳定性时，将未受伤腿作为正常参考可能会导致误解，因为在前交叉韧带损伤组的受伤腿和未受伤腿之间未发现显著差异。
