The Ballard Score Maturational Assessment of Gestational Age in Newly Born Infants

Measuring wrist flexibility and/or resistance to extensor stretching

Wrist flexibility and/or resistance to extensor stretching are responsible for the resulting angle of flexion at the wrist.

Measuring wrist flexibility and/or resistance to extensor stretching


Square Window Score

The examiner straightens the infant's fingers and applies gentle pressure on the dorsum of the hand, close to the fingers. From extremely pre-term to post-term, the resulting angle between the palm of the infant's hand and forearm is estimated at;

>90°, 90°, 60°, 45°, 30°, and 0°.

The appropriate square on the score sheet is selected.

SIGN NEURO-MUSCULAR MATURITY SCORE SIGN SCORE
-1 0 1 2 3 4 5
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Square Window Score