It is used for the study of torso-rotational deformity of the lower extremities.

No previous preparation is required, and for its realization images of the hips, knees and ankles are obtained, in relaxation and contraction of the quadriceps.

Subsequently, these images are used to draw angles and measurements that will give the degree of torsion and rotation of the femurs and tibias.

The exploration time inside the machine does not usually exceed 10 minutes.