Square Window

**Semantic type:** Intellectual Product

**Definition:** When testing the newborn infant for neuromuscular maturity, the "square window" test measures wrist flexibility and resistance to extensor stretching, The examiner straightens the infant's fingers and applies gentle pressure on the dorsum of the hand, close to the fingers, and then estimates the angle between the palm of the hand and the forearm.

**Synonyms:** - Square Window Sign