Department of Trauma and Orthopaedics, Torbay Hospital, Lawes Bridge, Torquay TQ2 7AA, UK.
Foot Ankle Surg. 2013 Mar;19(1):18-21. doi: 10.1016/j.fas.2012.08.004. Epub 2012 Sep 28.
Measurement of radiological angles can be useful in the planning of the management of patients with hallux valgus. A smartphone application offers an alternative way of measuring these angles in a clinic setting. We compared the reliability (inter- and intra-observer) of this method to the use of PACS.
Radiographs of 30 feet from new patients referred with hallux valgus were examined and angles (HVA, IMA, and DMAA) recorded using the smartphone application and PACS.
The smartphone application provided good inter-observer reliability for HVA and IMA (r=0.93 and r=0.79 respectively). Intra-observer reliability for HVA and IMA was also found to be good (r=0.93-0.97 r=0.82-0.93 respectively). The inter- and intra-observer reliability for using this method to measure DMAA fell below useful levels (r<0.60 in each case).
This smartphone application provides a reliable method to measure HVA and IMA but we would not recommend it to measure DMAA.
放射角度的测量在拇外翻患者的管理规划中可能很有用。智能手机应用程序为在诊所环境中测量这些角度提供了一种替代方法。我们将这种方法的可靠性（观察者内和观察者间）与 PACS 的使用进行了比较。
检查了 30 名新就诊的拇外翻患者的足部 X 光片，并使用智能手机应用程序和 PACS 记录了角度（HVA、IMA 和 DMAA）。
智能手机应用程序在 HVA 和 IMA 方面具有良好的观察者间可靠性（r=0.93 和 r=0.79）。HVA 和 IMA 的观察者内可靠性也很好（r=0.93-0.97，r=0.82-0.93）。使用这种方法测量 DMAA 的观察者间和观察者内可靠性都低于有用水平（每种情况下 r<0.60）。
该智能手机应用程序提供了一种可靠的方法来测量 HVA 和 IMA，但我们不建议使用它来测量 DMAA。
