Stop Swinging The Bar Around The Knees
If you’re swinging the bar around your knees in the snatch or clean, here’s the checklist for correction:
Position the bar over the balls of the foot rather than trying to get it farther back. It doesn’t need to be touching the shins, although it should be close.
Position the shoulder joint above the bar in the start—this means the arms will be approximately vertical when viewed from the side and the leading edge of the shoulder slightly in front of the bar.
Turn the feet out and push the knees out as far as possible inside the arms, and keep them out that much until the bar is past them.
Maintain approximately the same back angle from the floor to past the knees—opening the hips early brings the shoulders behind the bar and moves the knees into its path.