The W-positions is one of many sitting positions that most children move into and out of while playing, but it’s a four-letter word to some parents. Why is it presumed to be ok for some children and forbidden for others?
When playing in these other sitting postures, children develop the trunk control and rotation necessary for midline crossing (reaching across the body) and separation of the two sides of the body. These skills are needed for a child to develop refined motor skills and hand dominance.
W-sitting is not recommended for anyone. Many typically developing children do move through this position during play, but all parents should be aware that the excessive use of this position during the growing years can lead to future orthopedic problems.
Why do children W-sit? Every child needs to play and children who are challenged motorically like to play as much as anybody. They don’t want to worry about keeping their balance when they’re concentrating on a toy. Children who are frequent W-sitters often rely on this position for added trunk and hip stability to allow easier toy manipulation and play.