Zenooz Ghazal Hashemi, Taheriazam Afshin, Arab Amir Massoud, Mokhtarinia Hamidreza, Rezaeian Tahere, Hosseinzadeh Samaneh, Mosallanezhad Zahra
Department of Physical Therapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran; Clinical Research Development Center, Rofeideh Rehabilitation Hospital, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Department of Orthopedics, Faculty of medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
J Bodyw Mov Ther. 2025 Mar;41:21-28. doi: 10.1016/j.jbmt.2024.09.005. Epub 2024 Oct 24.
Poor performance in practicing balance tasks is partly caused by the changes in the knee function and balance control activities following total knee arthroplasty (TKA). The purpose of this study was to determine the test-retest reliability of the static and dynamic balance measures using Wii Balance Board (WBB) in patients after TKA.
Thirty-one TKA patients (6 males, 27 females, mean age 55 ± 5.3 years) were involved in the study. They performed four standing balance trials on a WBB on two occasions, with an interval of 3-7 days apart. Double leg stance and functional reach task with opened and closed eyes were assessed in four trials. Extracted center of pressure (COP) measures collected included: mean velocity, medio-lateral displacement, antero-posterior displacement, and area. Intraclass correlation coefficients (ICC), standard error of measure (SEM), minimal detectable change (MDC) and Bland-Altman plots were calculated to show the reliability of COP measures.
ICCs ranged from 0.51 to 0.86 for the four trials indicating moderate-to-good reliability. Just the medio-lateral displacement in double leg open eyes condition showed weak reliability (ICC = 0.29). The highest and lowest ICC values (0.86, 0.29) were obtained for COP medio-lateral displacement in double leg open eyes condition and medio-lateral displacement in double leg close eyes condition measures, respectively. SEM (0.03-5.93) and MDC (0.09-16.45) range scores varied. Bland-Altman plots revealed no significant difference between two trials in both opened and closed eyed conditions, indicating strong agreement between assessments.
These findings suggest that the WBB was a reliable tool for assessing static and dynamic balance tests in TKA patients, making it as a suitable tool for standing balance assessment in clinical settings.
全膝关节置换术（TKA）后膝关节功能和平衡控制活动的变化是导致平衡任务练习表现不佳的部分原因。本研究的目的是确定使用Wii平衡板（WBB）对TKA术后患者进行静态和动态平衡测量的重测信度。
31例TKA患者（6例男性，27例女性，平均年龄55±5.3岁）参与本研究。他们在WBB上进行了两次四次站立平衡试验, 间隔3 - 7天。在四次试验中评估了睁眼和闭眼时的双腿站立和功能性伸展任务。收集的提取压力中心（COP）测量值包括：平均速度、内外侧位移、前后位移和面积。计算组内相关系数（ICC）测量标准误差（SEM）、最小可检测变化（MDC）和布兰德-奥特曼图，以显示COP测量的信度。
四次试验的ICC范围为0.51至0.86，表明信度为中度至良好。仅双腿睁眼条件下的内外侧位移显示出较弱的信度（ICC = 0.29）。COP内外侧位移在双腿睁眼条件下测量值和双腿闭眼条件下内外侧位移测量值分别获得最高和最低ICC值（0.86, 0.29）。SEM（0.03 - 5.93）和MDC（0.09 - 16.45）范围得分各不相同。布兰德-奥特曼图显示，在睁眼和闭眼条件下，两次试验之间均无显著差异，表明评估之间具有高度一致性。
这些结果表明，WBB是评估TKA患者静态和动态平衡测试的可靠工具，使其成为临床环境中站立平衡评估的合适工具。
