Introduction Without a prompt diagnosis, developmental dysplasia of the hip (DDH) in infants can lead to severe sequelae. Current screening strategies emphasize the use of Ortolani and Barlow physical examination manoeuvres, yet they exhibit low sensitivity. The purpose of this study is to evaluate the performance of a new physical examination tool (the pronation manoeuvre) as a screening tool for DDH. Methods To evaluate the new manoeuvre, a cross-sectional and analytic study was performed with a nonprobabilistic sampling method. Patients with either a positive Ortolani or Barlow manoeuver were evaluated with the new manoeuvre and hip ultrasound. Controls were infants with negative Ortolani, Barlow and pronation manoeuvres and also had ultrasound performed. Results DDH was confirmed in 83 of 130 cases (64%) and 2 of 130 controls (2%). The new pronation manoeuvre had a sensitivity of 76% and a specificity of 94% as compared to the Ortolani and Barlow manoeuvres (sensitivity 31 to 32%, specificity 93 to 100%) (P<0.05). Conclusion This new physical examination manoeuvre could serve as another clinical tool for the initial screening of DDH in newborns. Its promising results against traditional screening procedures might potentially impact diagnosis and prognosis for patients with DDH.

中文翻译：

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用于诊断发育性髋关节发育不良的“旋前动作”的描述

简介 如果没有及时诊断，婴儿髋关节发育不良 (DDH) 会导致严重的后遗症。当前的筛查策略强调使用 Ortolani 和 Barlow 体格检查手法，但它们的敏感性较低。本研究的目的是评估一种新的体格检查工具（旋前操作）作为 DDH 筛查工具的性能。方法 为了评估新的策略，采用非概率抽样方法进行了横断面分析研究。Ortolani 或 Barlow 动作阳性的患者使用新的动作和髋关节超声进行评估。对照组是 Ortolani、Barlow 和旋前动作阴性的婴儿，也进行了超声检查。结果 130 例中的​​ 83 例 (64%) 和 130 例对照中的 2 例 (2%) 确认了 DDH。与 Ortolani 和 Barlow 手法相比，新的旋前手法的敏感性为 76%，特异性为 94%（敏感性为 31% 至 32%，特异性为 93% 至 100%）（P<0.05）。结论 这种新的体格检查方法可以作为新生儿 DDH 初步筛查的另一种临床工具。与传统筛查程序相比，其有希望的结果可能会影响 DDH 患者的诊断和预后。