Department of Physiotherapy, University of Valencia, Spain.
Department of Physiotherapy, University of Valencia, Spain; Physiotherapy in Motion, Multi Speciality Research Group (PTinMOTION), Department of Physiotherapy, University of Valencia, Spain.
Musculoskelet Sci Pract. 2020 Jun;47:102136. doi: 10.1016/j.msksp.2020.102136. Epub 2020 Feb 24.
Disrupted tactile acuity and poor laterality judgement have been shown in several chronic musculoskeletal pain conditions. Whether they are impaired in people with frozen shoulder (FS) remains unknown.
To determine whether there is impairment in tactile acuity and laterality judgement in subjects with FS.
Thirty-eight subjects with idiopathic FS and 38 sex and age-matched healthy controls were enrolled. The two-point discrimination threshold (TPDT) over the affected and unaffected shoulder of patients with FS and shoulder of healthy controls was evaluated. In addition, all participants performed a left/right judgment task (LRJT). Independent and dependent t-tests were used to compare group means. Pearson-product moment coefficient correlations between pain intensity and duration and LRJT and TPDT were calculated for the FS group.
The TPDT over the affected shoulder was significantly increased compared to the unaffected shoulder (mean difference, 3.82 mm; 95% confidence interval [CI]:0.53, 7.10; p = .02) and controls (mean difference, 5.80 mm; 95% CI: 1.09, 10.52; p = .02). Patients with FS were less accurate (mean difference, 5.90%; 95% CI: 0.36, 11.43; p = .03) and slower (mean difference, -0.26 s; 95% CI: 0.06, 0.45; p = .01) responding to images of their affected shoulder compared to their unaffected shoulder. No associations were found between pain intensity and duration and either TPDT or laterality judgement.
Participants with FS demonstrated reduced tactile acuity and impaired laterality judgement over their affected shoulder compared to their unaffected shoulder. When compared to controls, subjects with FS showed reduced tactile acuity. TRIAL REGISTRATION CLINICALTRIALS.
NCT03320200.
触觉敏锐度下降和偏侧判断能力差已在几种慢性肌肉骨骼疼痛疾病中表现出来。在冻结肩（FS）患者中是否存在这些缺陷尚不清楚。
确定 FS 患者的触觉敏锐度和偏侧判断能力是否受损。
招募了 38 名特发性 FS 患者和 38 名性别和年龄匹配的健康对照组。评估 FS 患者和健康对照组患侧和健侧肩部的两点辨别阈（TPDT）。此外，所有参与者均进行左右判断任务（LRJT）。采用独立样本 t 检验和配对样本 t 检验比较组间均值。计算 FS 组疼痛强度和持续时间与 LRJT 和 TPDT 之间的 Pearson 乘积矩相关系数。
与健侧（平均差异 3.82mm；95%置信区间 [CI]：0.53，7.10；p=0.02）和对照组（平均差异 5.80mm；95% CI：1.09，10.52；p=0.02）相比，患侧肩部 TPDT 明显增加。FS 患者对患侧肩部图像的反应准确性（平均差异，5.90%；95% CI：0.36，11.43；p=0.03）和速度（平均差异，-0.26s；95% CI：0.06，0.45；p=0.01）均降低。疼痛强度和持续时间与 TPDT 或偏侧判断无相关性。
与健侧相比，FS 患者患侧肩部的触觉敏锐度降低，偏侧判断能力受损。与对照组相比，FS 患者的触觉敏锐度降低。
NCT03320200。
