背景:疼痛敏感性是中枢致敏(CS)的主要发现,可发生在慢性肩痛患者中。然而,关于肩膀疼痛敏感性分布的证据有限,前臂,与慢性肩痛相关的CS患者的腿部。本研究旨在确定与慢性肩峰下疼痛综合征(SPS)相关的CS患者的疼痛敏感性分布。
方法:这项横断面研究包括58例慢性SPS和CS患者(患者组)和58例健康参与者(对照组)。使用中央敏感清单(CSI)确定CS的存在。为了确定疼痛敏感性的分布,压力疼痛阈值(PPT)测量从肩膀进行,前臂,和腿。
结果:就社会人口统计学数据而言,两组之间没有显着差异(p>0.05)。与对照组相比,患者组的CSI评分(p<0.001)和所有区域的PPTs均明显较低(p<0.05)。与对照组不同,患者组的肩部患侧PPTs较低[平均差(MD)95%置信区间(CI):1.2(-1.7至-0.6)],前臂[MD95%CI:1.1(-1.7至-0.6)],和腿[MD95%CI:0.9(-1.4至-0.3)]与对侧相比(p<0.001)。
结论:在患有慢性SPS的CS患者中,位于该侧的受影响的肩部以及前臂和腿部的疼痛敏感性比位于对侧的疼痛敏感性更明显。
BACKGROUND: Pain sensitivity is the main finding of central sensitization (CS) and can occur in patients with chronic shoulder pain. However, there is limited evidence concerning the distribution of pain sensitivity in shoulders, forearms, and legs in patients with CS associated with chronic shoulder pain. The present study aimed to determine the distribution of pain sensitivity in patients with CS associated with chronic subacromial pain syndrome (SPS).
METHODS: This cross-sectional study included 58 patients with chronic SPS and CS (patient group) and 58 healthy participants (control group). The presence of CS was determined using the Central Sensitization Inventory (CSI). To determine the distribution of pain sensitivity, pressure pain threshold (PPT) measurements were performed from the shoulders, forearms, and legs.
RESULTS: There was no significant difference between the two groups in terms of sociodemographic data (p > 0.05). The patient group had a significantly higher CSI score (p < 0.001) and lower PPTs in all regions (p < 0.05) than the control group. Unlike the control group, the patient group had lower PPTs on the affected side for the shoulder [mean difference (MD) 95% confidence interval (CI): 1.2 (-1.7 to -0.6)], forearm [MD 95% CI: 1.1 (-1.7 to -0.6)], and
leg [MD 95% CI: 0.9 (-1.4 to -0.3)] compared with the contralateral side (p < 0.001).
CONCLUSIONS: Pain sensitivity is more pronounced in the affected shoulder and the forearm and
leg located on this side than in those on the contralateral side in patients with CS associated with chronic SPS.