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Use this calculator to assess the gestational maturity of your newborn.  At the end of the examination the total score determines the gestational maturity in weeks.
 
 
SIGN NEUROMUSCULAR MATURITY SCORE SIGN SCORE
-1 0 1 2 3 4 5
Posture posture

 

posture

 

posture

posture

posture

Square Window square window

square window

square window

square window

square window

square window

Arm Recoil

Popliteal Angle

Scarf Sign

Heel To Ear

 
TOTAL SCORE  WEEKS
-10 20
-5 22
0 24
5 26
10 28
15 30
20 32
25 34
30 36
35 38
40 40
45 42
50 44

TOTAL NEUROMUSCULAR  MATURITY SCORE

TOTAL PHYSICAL MATURITY SCORE

TOTAL SCORE 
WEEKS
SIGN PHYSICAL MATURITY SCORE SIGN SCORE
-1 0 1 2 3 4 5
Skin Sticky, friable, transparent

gelatinous, red, translucent 

smooth pink, visible veins

superficial peeling &/or rash, few veins

cracking, pale areas, rare veins

parchment, deep cracking, no vessels

leathery, cracked, wrinkled


Lanugo
 
none

sparse

abundant

thinning

bald areas

mostly bald

Plantar Surface  heel-toe
40-50mm: -1 <40mm: -2

>50 mm
no crease

faint red marks

anterior
transverse crease only

creases ant. 2/3

creases over entire sole

Breast imperceptable

barely perceptable

flat areola
no bud

stippled areola
1-2 mm bud

raised areola
3-4 mm bud

full areola
5-10 mm bud

Eye / Ear lids fused
loosely: -1
tightly: -2

lids open
pinna flat
stays folded

sl. curved pinna; soft; slow recoil

well-curved pinna; soft but ready recoil

formed & firm
instant recoil

thick cartilage
ear stiff

Genitals (Male) scrotum flat, smooth

scrotum empty,
faint rugae

testes in upper canal,
rare rugae

testes descending,
few rugae

testes down,
good rugae

testes pendulous,
deep rugae

Genitals (Female) clitoris
prominent & labia flat

prominent
clitoris & small labia minora

prominent
clitoris & enlarging minora

majora & minora equally prominent

majora large,
minora small

majora cover clitoris & minora

(Adapted from Ballard JL, Khoury JC, Wedig K, et al: New Ballard score, expanded to include extremely premature infants. The Journal of Pediatrics 119(3):417423, 1991; used with permission from Elsevier .)

 

See Also

The New Ballard Score

 

References :
Ballard JL, Khoury JC, Wedig K, et al: New Ballard Score, expanded to include extremely premature
infants.J Pediatrics 1991; 119:417-423.

 Donovan EF, et al. Inaccuracy of Ballard scores before 28 weeks' gestation. National Institute of Child Health and Human Development Neonatal Research Network. J Pediatr. 1999;135(2 Pt 1):147-52. PMID:10431107

All calculations must be confirmed before use. The suggested results are not a substitute for clinical judgment. Neither Perinatology.com nor any other party involved in the preparation or publication of this site shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material.

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