Upper segment to lower segment ratio at bih is ___________
The U/L ratio (upper body segment :lower body segment) at bih is about 1.7; at age 3 years it is 1.3; at greater than 7 years, it is 1.0 with the upper body segment and lower body segment being about equal. Of note, higher U/L ratios are noted in sho-limb dwarfism and other bone disorders such as rickets. Reference: GHAI Essential pediatrics, 8th edition
1
1.3
1.5
1.7
New born infants