Infantile propoion in adult is seen in
Normal body propoion in adults Height = arm span Upper segment= lower segment Normal body propoion in infants is Height ( length)> arm span Upper segment> Lower segment. Infantile propoion means increased upper to lower segment ratio. Seen in conditions like Achondroplasia and hypothyroidism. Reverse infantile propoion means increased lower segment. Seen in Eunuchoidism, Marfans syndrome, Homocystinuria, Klinefelter's syndrome. Ref: Nelson's 20th edition, Pg- 3371.
Morquio's disease
Achondroplasia
Hypothyroidism
Malnutrition
General anatomy