title: Semen characteristics in pubertal boys. II. Semen quality in relation to bone age.
abstract: Semen specimens from 134 pubertal boys were examined and compared to bone age. Normal figures for semen volume, liquefaction, sperm concentration, and morphology were observed between 15 0/12 and 16 0/12 years of bone age. The number of normally motile spermatozoa became standard at 17 0/12 years of bone age. Azoospermia was noted from 13 0/12 to 14 0/12 years of bone age, oligozoospermia from 14 0/12 to 15 0/12, asthenozoospermia from 16 0/12 to 17 0/12, and normospermia from 17 0/12 on.
mesh_terms: D000293:Adolescent; D000328:Adult; D000365:Age Determination by Skeleton; D002648:Child; D006801:Humans; D008297:Male; D009845:Oligospermia; D011627:Puberty; D012661:Semen / Q000166:cytology / Q000502:physiology*; D013076:Sperm Count; D013094:Spermatozoa / Q000145:classification / Q000166:cytology