為甚麼扭傷腳和手會叫拗柴？

拗柴時足踝會向外翻或是向內翻，不過是向內翻較外翻的多，踝關節上有三條主要的韌帶，
要看拉傷了多少條韌帶及拉傷的嚴重情況，才能預計康復的時間，嚴重的可能要休息幾個月才可完全康復。
http://www.singpao.com/20050513/feature/711988.html
拗柴 = looks like a 柴 suddenly break into 2 parts, very brittle and create a fracture ... if you get a piece of dry wood branch and break it in half you will hear a cracking noise and see the ending of each half looks like a fracture in the bone.