Bone abnormalities in the XYY syndrome.
D000293:Adolescent; D001842:Bone and Bones / Q000002:abnormalities*; D002869:Chromosome Aberrations; D006801:Humans; D007621:Karyotyping; D007719:Knee Joint; D008297:Male; D010007:Osteochondritis / Q000235:genetics; D011627:Puberty