Beginner roller skating
The Arabesque Straightens From the Hip, Not the Leg
The leg behind you will not straighten by being lifted. It straightens when your hip travels backwards, as though you were about to sit down on something behind you, and you should feel that pull in the hamstring of the standing leg. Without the hip going back, the free leg stays bent however hard you raise it. Move your weight across through your navel first, then stack head, hip and skate over the standing leg. Quad technique, from Najete Kada.
An arabesque needs two things and the order is not negotiable: balance first, flexibility second. Move your weight across through your navel, then stack head, hip and skate over the standing leg.
Then the part that is genuinely counter-intuitive. The leg behind you does not straighten by being lifted. It straightens when your hip travels backwards, as though you were about to sit down on something behind you. You should feel a pull in the hamstring of the standing leg — that pull is the confirmation.
Without the hip going back, the free leg stays bent no matter how hard you raise it. This is why the position feels impossible to some people and easy to others: they are not doing the same movement at all. One is lifting a leg, the other is folding at the hip.
So practise it in that order. Sit the hip back until you feel the hamstring, and let the leg follow. The height is a consequence, not an instruction. Quad technique, from Najete Kada's Tuto roller series. She is a French champion in artistic roller skating and teaches quad; nothing on this page is a claim about inline skates.
Keep going: this is one section of the full Roller Skating for Beginners guide — sizing, gear, stopping, and where to skate, in one page.