3 year old boy in the “Najaden” position. This is a term for a position which children until the teenage years often take. It is practically an inverted cross-legged position. The hip joints are rotated to the inside (instead of the outside), so that the child can sit between the lower legs. The reason for this infantile preference is that the femoral neck shows enhanced antetorsion. Meaning, that the femoral head is rotated to the front. This leads to the infantile preference to rotate the legs towards the inside and also shows in the walking style („kneeing-in“, walking over the big toe) and also in the “Najaden” position. These signs are also called antetorsion syndrome.
Source: Praxis Dr. Lengerke