慢性踝关节不稳的电流感觉阈值测试
Current perception threshold testing in chronic ankle instability.
作者信息
Zhang Ran, Zhang Xi, Chen Yaping, Song Weiqun
机构信息
Department of Rehabilitation, Xuanwu Hospital, Capital Medical University, 45 Changchunjie, Beijing, 100054, China.
Department of Rehabilitation, Beijing Tongren Hospital, Capital Medical University, 1 Dongjiaominxiang, Beijing, 100730, China.
出版信息
BMC Musculoskelet Disord. 2021 May 18;22(1):453. doi: 10.1186/s12891-021-04345-y.
BACKGROUND
Damage to sensory input is an underlying pathology of chronic ankle instability (CAI). Therefore, it is necessary to evaluate the sensory function of patients with CAI. The present study quantitatively evaluated sensory nerve function in patients with CAI and healthy controls using current perception threshold (CPT) measurements, as well as the influence of sex, age, and body mass index (BMI) on CPT values and the relations between CPT frequencies.
METHODS
Fifty-nine subjects with CAI and 30 healthy controls participated in this study. CPT values at the anterior talofibular ligament region were recorded on the injured and uninjured sides in CAI patients and on both sides in the healthy control group. Between group differences were compared. The influence of sex, age and BMI on CPT values was evaluated. Correlations between different frequencies were also studied.
RESULTS
There were no significant differences in age, sex, height, weight or BMI between the CAI and healthy control groups. The CPT values did not show a significant difference by sex. The CPT values did not significantly correlate with age or BMI. Compared to the control group, the CAI group had significantly higher CPT values on the injured and uninjured sides under 250-Hz and 5-Hz electrical stimuli; the difference between the groups was significant (p < 0.01), and the effect size were large. No significant difference was observed under 2000-Hz stimuli. There were correlations between CPT values at different frequencies (p < 0.01), especially 250 Hz and 5 Hz.
CONCLUSION
The present study revealed increased sensory thresholds in 250-Hz- and 5-Hz-related sensory nerve fibres in the injured and uninjured ankles of patients with CAI. This increase may indicate dysfunction of A-delta and C fibres. Sex, age and BMI did not significantly impact CPT values. There were correlations between CPT values at different frequencies, especially 250 Hz and 5 Hz.
LEVEL OF EVIDENCE
Level III, case-control study.
背景
感觉输入受损是慢性踝关节不稳（CAI）的一种潜在病理表现。因此，评估CAI患者的感觉功能很有必要。本研究采用电流感觉阈值（CPT）测量法对CAI患者和健康对照者的感觉神经功能进行了定量评估，以及性别、年龄和体重指数（BMI）对CPT值的影响和CPT频率之间的关系。
方法
59例CAI患者和30例健康对照者参与了本研究。记录CAI患者患侧和未患侧以及健康对照组双侧距腓前韧带区域的CPT值。比较组间差异。评估性别、年龄和BMI对CPT值的影响。还研究了不同频率之间的相关性。
结果
CAI组和健康对照组在年龄、性别、身高、体重或BMI方面无显著差异。CPT值在性别上未显示出显著差异。CPT值与年龄或BMI无显著相关性。与对照组相比，CAI组在250 Hz和5 Hz电刺激下患侧和未患侧的CPT值显著更高；组间差异显著（p < 0.01），效应量较大。在2000 Hz刺激下未观察到显著差异。不同频率的CPT值之间存在相关性（p < 0.01），尤其是250 Hz和5 Hz。
结论
本研究揭示了CAI患者患侧和未患侧踝关节中与250 Hz和5 Hz相关的感觉神经纤维的感觉阈值升高。这种升高可能表明A-δ和C纤维功能障碍。性别、年龄和BMI对CPT值无显著影响。不同频率的CPT值之间存在相关性，尤其是250 Hz和5 Hz。
证据水平
III级，病例对照研究。
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