外开（turn-out）欠佳的舞者一开始不应勉强把腿过度外开，因为这样做通常会导致脚踝塌陷（rolling ankles）。若身体重量落在脚掌内侧，舞者称之为 rolling in（向内塌陷）；若重量落在脚掌外侧，则称为 rolling out（向外塌陷）。脚趾和脚跟应平贴地面，外开必须源自髋关节。
滚动（脚踝内翻）
外开（turn-out）欠佳的舞者一开始不应勉强把腿过度外开，因为这样做通常会导致脚踝塌陷（rolling ankles）。若身体重量落在脚掌内侧，舞者称之为 rolling in（向内塌陷）；若重量落在脚掌外侧，则称为 rolling out（向外塌陷）。脚趾和脚跟应平贴地面，外开必须源自髋关节。
Dancers who do not have a good turn-out should not force their legs to turn out too much at first, as this usually results in rolling ankles. If the weight is on the inside of the feet, dancers call this rolling in; if the weight is on the outside of the feet, it is called rolling out. The toes and heels should be flat on the floor and the turn-out must come from the hip joints.