Department of Orthopedics, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Jingan District, Shanghai, China.
Institute of Biomedical Engineering, Academy for Engineering & Technology, Fudan University, 220 Handan Road, Yangpu District, Shanghai, China.
BMC Musculoskelet Disord. 2022 Jul 22;23(1):699. doi: 10.1186/s12891-022-05656-4.
Local pain around the ankle joint is a common symptom in patients with chronic ankle instability (CAI). However, whether the local pain would impose any influence on the balance control performance of CAI patients is still unknown.
A total of twenty-six subjects were recruited and divided into the following two groups: pain-free CAI (group A) and pain-present CAI (group B). Subjects in both groups received two independent tests: the star excursion balance test and the single-leg stance test, in order to reflect their balance control ability more accurately.
Compared with group A, the group B showed significantly more episodes of the history of sprains, decreased ankle maximum plantarflexion angle, and lower Cumberland scores (all p < 0.05). In the star excursion balance test, group B demonstrated a significantly reduced anterior reach distance than group A (p < 0.05). During the single leg stance test, group B showed a significant increase in the magnitude of electromyographic signals both in peroneus longus and soleus muscles than group A (each p < 0.05). Additionally, group B had a significantly more anterolaterally positioned plantar center of pressure than group A (p < 0.05).
CAI patients with local pain around the ankle joint had more episodes of sprains and lower functional scores when compared to those without pain. The balance control performance was also worse in the pain-present CAI patients than those without pain.
踝关节周围局部疼痛是慢性踝关节不稳（CAI）患者的常见症状。然而，局部疼痛是否会对 CAI 患者的平衡控制能力产生影响尚不清楚。
共招募了 26 名受试者，并将其分为以下两组：无痛 CAI（组 A）和疼痛 CAI（组 B）。两组受试者均接受了两项独立测试：星形偏移平衡测试和单腿站立测试，以更准确地反映其平衡控制能力。
与组 A 相比，组 B 有更多的扭伤史、踝关节最大跖屈角度减小和 Cumberland 评分降低（均 p<0.05）。在星形偏移平衡测试中，组 B 的前向伸展距离明显小于组 A（p<0.05）。在单腿站立测试中，组 B 的腓骨长肌和比目鱼肌的肌电图信号幅度明显大于组 A（均 p<0.05）。此外，组 B 的足底压力中心前外侧位置明显大于组 A（p<0.05）。
与无疼痛的 CAI 患者相比，踝关节周围有局部疼痛的 CAI 患者扭伤次数更多，功能评分更低。疼痛 CAI 患者的平衡控制能力也比无疼痛患者差。
