Knee steps are very common by goalies and a very good movement to adapt the positioning with small “steps” to the action on the field. Many goalies see it as the easiest way of repositioning close to the goal. Knee steps take the least strength of all movement forms and can still be very fast.
How to do it?
We imagine a movement to the right side.
You can be on your toes or not, depends on how you prefer it
For bigger steps you need to be on your toes
Depending on the positioning of your shins on the floor, you can move straight or in a circle. Simple straight movement requires parallel shins. If you move in a circle your feet are closed. Advanced movement is that during the straight movement the shins are moving too.
Lift or glide your left leg to the right leg
Once the legs are close to each other you can move the right leg to the right until they are in a shoulder wide position
Consider the duck
Above the water level - calm, your torso is ready for the save
Under the water level - motion, legs and feet are working
Repeat until you reach the target position
Final point is the starting point - Initial position
If you want to be faster you have to lift your knees from the floor while doing the movement. In addition, consider that your legs are not too wide open that a striker can pass you with a strong shot between them. It is always a question of timing. When you realize a striker prepares for a shot close the fifth hole with your feet while your knees stay shoulder wide to ensure that he does not nutmeg/tunnel you.
This is a basic movement and it should be in the repertoire of every goalie. It has been extremely well received, when actions happen in the slot. It is very risky to lift a knee and go on one foot (movement forward) to reposition. There would be no chance to block a flat shot. Train this movement again and again and you will increase in speed and ability. That goes not only for the movement itself, but also to reacting to a striker taking a shot while you perform the movement.