BACKGROUND: Dynamic humeral centering (DHC) is a physiotherapy modality that aims to prevent sub-acromial impingement of rotator cuff tendons. We recently developed a new clinical manoeuver – the Viggo-Cochin test – to enhance the ability of the Neer test to detect sub-acromial impingement. Here wehypothesised whether the DHC effect may differ between individuals with positive and negative Viggo-Cochin test results. OBJECTIVE: To assess the association between DHC and Viggo-Cochin test results. METHODS: Individuals with shoulder pain due to sub-acromial impingement underwent the Neer and Viggo-Cochin tests at baseline. They were assessed before and after DHC by the Shoulder Pain and Disability Index (SPADI). A positive response to DHC was defined as a 20% reduction in the SPADI. RESULTS: We included 50 individuals (53 shoulders). The response to DHC did not differ by Neer test result at baseline: OR 0.73 [95% CI 0.22–2.38] (p= 0.601). By contrast, the response to DHC was 5-fold higher with a positive than negative Viggo-Cochin test result: OR 5.11 [95% CI 1.47–17.78] (p= 0.010). CONCLUSIONS: We found a higher clinical response to DHC with a positive than negative Viggo-Cochin test result at baseline in individuals with shoulder pain due to rotator cuff disease.

中文翻译：

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肩峰下撞击临床试验预测对动态肱骨对中理疗反应的价值：初步研究

背景：动态肱骨定心（DHC）是一种物理治疗方式，旨在防止肩袖肌腱的肩峰下撞击。我们最近开发了一种新的临床操作——Viggo-Cochin 测试——以增强 Neer 测试检测肩峰下撞击的能力。在这里我们假设 DHC 效应在 Viggo-Cochin 测试结果呈阳性和阴性的个体之间是否可能不同。目的：评估 DHC 与 Viggo-Cochin 测试结果之间的关联。方法：因肩峰下撞击而导致肩痛的个体在基线时接受了 Neer 和 Viggo-Cochin 测试。他们在 DHC 前后通过肩痛和残疾指数 (SPADI) 进行了评估。对 DHC 的积极反应被定义为 SPADI 减少 20%。结果：我们包括 50 个人（53 个肩膀）。基线 Neer 测试结果对 DHC 的反应没有差异：OR 0.73 [95% CI 0.22–2.38] (p= 0.601)。相比之下，对 DHC 的反应是阳性比阴性 Viggo-Cochin 测试结果高 5 倍：OR 5.11 [95% CI 1.47–17.78] (p = 0.010)。结论：我们发现，在因肩袖疾病导致肩痛的个体中，基线时 Viggo-Cochin 测试结果阳性比阴性的 DHC 临床反应更高。