在八十五式杨式太极拳中，搂膝拗步占了九式，要打七次左搂膝拗步，二次右搟膝拗步，这一招式之重要不言而喻。有人认为搟膝拗步较招式易学好打，但笔者以为按照拳理要求能打到位就很难。现将笔者的一些心得体会写出来，与拳友们交流、探讨，敬请指正。

一、转腰时应做到尾闾中正

无论在白鹤亮翅，手挥琵琶，或是转身蹬脚过渡到左搟膝拗步，再或是左搟膝拗步过渡到右 搟 膝 拗 步，都必须先转腰，并以腰带动二臂一上一下。在这过程中，无论是随着右掌弧形下落还是同时外旋，以及左掌自左下向前而上，在身体轻利顶头悬的情况下，我们必须做到尾闾中正，以此达到神贯顶的效果。

然而，在教学和练习过程中，不少初学者往往忽略了这一点，从而出现了一系列问题，如随着右掌弧形下落时形成左肩高右肩低，上体微微向右倾；或者当腰已转至一定角度后，却不再动弹，让二手继续一上一下；还有的是身体摇晃，使臀部凸出与敛臀要求相悖。

这些错误主要源于对太极拳要领理解不足。根据拳论要求，当脊椎至尾闾处应保持垂直线上的状态，这便体现了最为完美的中正安舒。当脊椎关节放松且尾闾悬垂时，对于运气和发劲都起到了关键作用。

因此，在练习搞履攘足（左右）时，我们应该注意以下几点：

右掌外旋时须沉肩垂肘，但不要刻意把右肩低下去，而要保持双肩平齐。

两 shoulders 应随 waist 一起缓缓 right 转( shoulder 与 hip 对准)。

Right foot 的 sole 顺著45度偏小或偏大都会影响转 waist 迈 step。

注意敛 buttocks，不使 buttocks 向后凸出或向侧面凸出，要松 waist 落 hips，有利于气沉丹田。

在轉 waist 時特別是在轉 right 轉為 left 轉時，即將 left foot 開始迈 step 時，要防止身体摇晃。

Left foot 迈 step 時，可不能抬腿過高，更不可讓 left foot 靠近 right ankle 而應直接慢慢前弧伸出。

Left heel 突然着地後，其間仍需維持 body center 重心於 right foot 不可前移。

二、 搞履攘足動作要以腰帶肘，以肘帶手

根据“搞履攘足”用法（假设对手从我left側來，用手或foot擊來，如果只動hand，不動liver，是無法將對hands 或 feet 搭開），習練這個動作時必須注意以腰帶liver，以liver帶hand，這樣才能達成貫劲的要求。在這裡我們常見一些問題，如:

1.Left hand 開始前的 movement 太靠近right chest，没有给自己留有回旋余地，把自己困死；

2.Grabbing the knee with a relaxed wrist, without sitting the wrist, lacking in power to penetrate into the fingers;

3.The action of grabbing is stiff and tense, losing the feeling of four ounces moving a thousand pounds;

4.Eyes are scattered, without focus or awareness of defense.

To correct these errors we should:

1.Grab with an arm that forms an arc shape but not too straight nor too curved.

2.Look forward with steady eyes while keeping them focused on your opponent.

3.Lead by bringing up the left leg as you turn your waist to bring up your hands in a downward arc to grab at your own thigh from its front side.

4.Sit down and close off at the wrist when grabbing with both hands so that you can maintain control over them and keep them firm.

The practice of "Graze Leg Step" requires careful attention to detail if one wishes to master it fully, for each part plays a crucial role in achieving balance and fluidity in motion.

In conclusion, mastering "Graze Leg Step" involves much more than just physical movements; it requires mental discipline as well as keen observation skills.

It's important for us all - whether beginners or advanced practitioners - to continue learning about this art form through experience and experimentation so that we may better understand its intricacies.

Through our collective efforts we will be able to perfect this ancient martial art known as Tai Chi.

This article has been written based on my personal experiences practicing Tai Chi under Master Wang Wei Liang's guidance at his school located near Shanghai’s historic Bund area.

I hope that readers find this helpful information valuable for their own journey towards mastery within this beautiful martial art form known worldwide simply as Tai Chi