红外热成像用于慢性足底筋膜炎诊断的临床研究

目的:观察慢性足底筋膜炎患者的足跟皮肤温度变化特点并探讨红外热成像检查是否可作为评估患者疼痛与功能状态的客观指标。方法:选取32例临床最终诊断为单侧慢性足底筋膜炎患者,依据患者有无症状分为有症状侧和无症状侧,将足跟部皮肤依据象限划分为5个感兴趣区(ROI),使用红外热像仪系统对患者双侧足底及手指进行红外热图像观察,并记录每个患者的足跟部ROI平均温度、视觉模拟评分(VAS)和足踝残疾指数(FADI)。分别比较有症状侧和无症状侧的足跟部5个ROI温度的差异,分析有症状侧5个ROI温度与VAS,FADI之间的关系,评估有症状侧5个ROI温度与疼痛、功能评分的相关性。结果:有症状侧和无症状侧的5个ROI的温度差异均有统计学意义(P<0.05),有症状侧足底各ROI的平均温度与VAS之间无相关性(P>0.05),有症状侧足跟部5个ROI的平均温度均与FADI之间有相关性(r=-0.55)。结论:慢性足底筋膜炎患者足跟部皮肤温度升高,且有症状侧足跟温度与临床评分之间具有相关性,红外热成像检查可以作为评价慢性足底筋膜炎患者与疼痛相关的功能指标。

Clinical Evaluation of Infrared Thermal Imaging for Chronic Plantar Fasciitis

Objective:To observe the changes of heel skin temperature in patients with chronic plantar fasciitis and explore whether infrared thermal imaging could be used as an objective index to evaluate the pain and function of patients.Methods:32 participants with unilateral chronic plantar fasciitis were divided into symptomatic and asymptomatic sides according to the presence or absence of symptoms.The skin of heel was divided into 5 region of interest(ROI)according to quadrants.The mean temperature of the heel from infrared camera system,the visual analog scale(VAS),foot and disability index(FADI)were recorded.The temperature differences of the five ROI of symptomatic and asymptomatic sides were compared.The correlation between the temperature of 5 ROI on the symptomatic side and pain,functional score were analyzed.Results:Statistically significant differences of temperature was found in the five ROI on the symptomatic side as compared with asymptomatic side(P<0.05).The mean temperature of each ROI in the symptomatic lateral heel showed no positive correlation with the VAS(P>0.05).The mean temperature of the five ROI in the symptomatic side was negatively moderate correlated with the FADI(r=-0.55).Conclusion:The heel skin temperature increases in patients with chronic plantar fasciitis,and there is a positive correlation between the temperature of symptomatic and clinical score.Infrared thermal imaging can be used to evaluate the pain related to function of patients with chronic plantar fasciitis.