[X-ray anatomic features of the skeleton in the 47, XYY syndrome].

The data are represented on the examination of 11 men with 47, XYY karyotype, roengenography of some parts of their skeletals including. The result are compared with the data on investigation of 430 human males chosen from a population. This anomaly in the karyotype stipulates, in the skeletal formation, a tendency to high stature, a certain flattening in the head of the radiocarpal articulation, the kneepan and the distal contour of the femoral bone. Nearly in a half of all observations valgus deviation of the ulnar articulation was somewhat increased, in 3 cases--inhibition of some synostoses in the growth zones of the extremities was noted. A supposition is made that in males the insidence of cleft in sesamoid bones in the lower extremities is increased in the presence of the extra Y-chromosome.