
Reference Manual 68
Fetal Growth Table
Jeanty P, Rodesch F, Delbeke D, Mumont J, “Estimation of Gestational Age from Measurements
of Fetal Long Bones.” J Ultrasound Med 3:75-79, 1984
Age (W)
Growth
(cm)
Min (cm) Max (cm) Age (W)
Growth
(cm)
Min (cm) Max (cm)
13 1.10 0.30 1.80 27 4.30 3.70 4.80
14 1.30 0.40 1.70 28 4.40 3.70 4.80
15 1.60 1.00 2.20 29 4.60 4.00 5.10
16 1.90 0.80 2.40 30 4.70 3.80 5.40
17 2.10 1.10 3.20 31 4.90 3.90 5.90
18 2.40 1.30 3.00 32 5.00 4.00 5.80
19 2.60 2.00 3.20 33 5.20 4.30 6.00
20 2.90 2.10 3.20 34 5.30 4.40 5.90
21 3.10 2.50 3.60 35 5.40 4.70 6.10
22 3.30 2.40 3.70 36 5.50 4.70 6.10
23 3.50 2.70 4.30 37 5.60 4.90 6.20
24 3.70 2.90 4.10 38 5.70 4.80 6.30
25 3.90 3.40 4.40 39 5.70 4.90 6.60
26 4.10 3.40 4.40 40 5.80 5.00 6.50
Ulna : MERZ
Fetal Growth Table
Merz, Eberband, “Ultrasonic Mensuration of Fetal Limb Bones in the Second and Third
Trimesters.”
J Clin Ultrasound 15:175-183, Table 1, March/April 1987
Age (W)
Growth
(cm)
Min (cm) Max (cm) Age (W)
Growth
(cm)
Min (cm) Max (cm)
13 0.80 0.50 1.10 28 4.50 4.20 4.90
14 1.10 0.80 1.40 29 4.70 4.30 5.10
15 1.50 1.20 1.80 30 4.90 4.50 5.20
16 1.80 1.50 2.10 31 5.00 4.60 5.40
17 2.10 1.70 2.40 32 5.20 4.80 5.60
18 2.30 2.00 2.70 33 5.30 4.90 5.70
19 2.60 2.30 2.90 34 5.50 5.10 5.90
20 2.80 2.50 3.20 35 5.60 5.20 6.00
21 3.10 2.70 3.40 36 5.70 5.30 6.10
22 3.30 3.00 3.70 37 5.80 5.40 6.30
23 3.50 3.20 3.90 38 5.90 5.50 6.40
24 3.70 3.40 4.10 39 6.00 5.60 6.50
25 3.90 3.60 4.30 40 6.10 5.70 6.60
26 4.10 3.80 4.50 41 6.20 5.80 6.60
27 4.30 4.00 4.70
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