On the forces exerted on the hip during gait.

Starting from the data of Braune and Fischer on the human gait and of Fick on the hip muscles, the forces acting on the hip joint during gait are calculated in tridimensional space. The analysis confirms the study on the same subject by Pauwels with a simpler method, as far as the coronal projection is concerned. In the horizontal plane, the resultant force exerted on the hip seems to be greater and its direction is different from that described by Pauwels.