The Secret is the correct functioning of the right leg, with emphasis on maintaining the angle of the right knee on the back and forward swings.

那个秘密就是关于他的右腿，强调在上杆和下杆时维持右膝关节的角度。

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Result:Unaffected side of hemiplegic patient and normal lower limb were notable different in time parameters, space parameters and knee joint angle(P<0.01).

结果：患者的健侧下肢与正常人的两下肢在时间参数、空间参数、膝关节角度等方面均存在显著差异（P<0.01）。

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Knee roll: As the weight shifts onto the new ski the knees roll into the Angle of the new turn.

膝盖转动：随着重心移到新的雪板上，膝盖转动到下个回转的角度。

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