has part has part characteristic of inheres in has modifier Femoral retroversion Femoral torsion, also known as femoral rotation or femoral version, refers to the twist between the proximal and distal parts of the femur on the transverse plane. Femoral anteversion averages between 30-40 degrees at birth, and between 8-14 degrees in adults. This term applies if the amount of femoral torsion is below this range. HP:0008796 UMLS:C1846339 Decreased femoral torsion Externally rotated hips HP:0031070 An abnormal backward rotation of the hip relative to the knee such that the hips are externally rotated with the foot pointed outward instead of straight ahead (out-toeing). HP:0003783 Abnormal femoral torsion abnormal laterally rotated hip