The Truth: While your kiddo may find it more comfortable to sit in a W and will naturally avoid painful positions, W-sitting is usually a pattern that is used whenever the child is sitting on the floor. Over time, undeveloped bones and joints are affected by the routine stress on the hip and legs. Generally, I don’t worry about adjusting the W-sit pattern until about age 2 to 2.5 due to increased flexibility and malleability of bones and joints in infancy. Internal rotation (twisting inward) of the thighbone (which is called “femoral anteversion”) is fairly typical at a young age and tends to decrease after age 8. However, it is important to note that therapists see better results the earlier the problem is addressed. Age 8, or even 6 or 7, are considered advanced stages to discover issues with coordination and strength that could have been addressed or avoided altogether. Additionally, this pattern is also seen in kids who have other underlying issues, such as low tone, generalized muscle weakness, sensory concerns, and decreased fine and gross motor coordination.