While proprioceptive functioning of the cervical extensor muscles has been proposed to be associated with chronic neck pain (NP), the mechanism by which such impairment might contribute to NP is not clear. The aim of this cross-sectional study was to investigate the relevance of proprioception, extensor muscles size, and endurance to chronic NP. A total of 60 participants with (n = 30) or without (n = 30) chronic NP participated in this cross-sectional study. Joint repositioning error (JRE), ultrasonographic parameters of the cervical extensors, and clinical extensor endurance were assessed. Multivariate analysis of variance and logistic regression tests were used to compare the groups and test the predictive value of the dependent variables for chronic NP, respectively. Patients showed comparable JRE scores but smaller multifidus size and lower extensor endurance (Cohen d = 0.66 for both). JRE in the transverse plane (β = 1.20), multifidus muscle size (β = 0.02), and endurance (β = 0.99) were significant predictors for chronic NP odds ratio. The results found multifidus size as the most relevant factor to NP by showing both between-groups difference and considerable odds ratio. As JRE in transverse plane was not different between the groups and extensor endurance demonstrated minimal odds ratio, these 2 factors may be considered as less relevant to NP comparing multifidus muscle size.

虽然颈伸肌的本体感觉功能被认为与慢性颈部疼痛 (NP) 有关，但这种损伤可能导致 NP 的机制尚不清楚。这项横断面研究的目的是调查本体感觉、伸肌大小和耐力与慢性 NP 的相关性。共有 60 名患有 (n = 30) 或不患有 (n = 30) 慢性 NP 的参与者参与了这项横断面研究。评估了关节重新定位误差（JRE）、颈伸肌的超声参数和临床伸肌耐力。分别使用多变量方差分析和逻辑回归检验来比较各组并检验因变量对慢性 NP 的预测价值。患者的 JRE 评分相当，但多裂肌较小，伸肌耐力较低（ 两者的Cohen d = 0.66）。横切面上的 JRE ( β  = 1.20)、多裂肌大小 ( β  = 0.02) 和耐力 ( β  = 0.99) 是慢性 NP 比值比的显着预测因子。结果发现，通过显示组间差异和相当大的比值比，多裂肌大小是与 NP 最相关的因素。由于各组之间横向平面的 JRE 没有差异，并且伸肌耐力表现出最小的比值比，因此这两个因素可能被认为与比较多裂肌大小的 NP 相关性较小。