Grasp of a Cube

Question 1

The infant’s thumb begins to adduct with fingers pressed against the ulnar side of the palm, progressing in the direction of the center of the palm toward a palmar grasp

Answer 1

Ulnar Palmar Grasp (4 - 5 months)

Question 2

Visually attends to object, grasp is reflexive

Answer 2

Neonate

Question 2

Fingers on far side of object press it against opposed thumb and radial side of palm

Answer 2

Radial-Palmar Grasp (6 months) with wrist straight (7 months)

Question 3

Object held with the opposed thumb and fingertips, space visible

Answer 3

Radial-Digital Grasp (8 months) with wrist extended (9 months)

Question 5

Visually attends to object and may swipe. Sustained voluntary grasp possible only upon contact, ulnar side used, no thumb involvement, wrist flexed

Answer 5

3 months

Question 6

Fingers on top surface of object press it into center of palm with thumb adducted

Answer 6

Palmar Grasp (5 months)

Question 7

Visually attends to object, approaches if within 1 inch, contact results in hand pulling object back to squeeze precariously against the other hand or body, no thumb involvement

Answer 7

Primitive Squeeze Grasp (4 months)