Grasp Progression : Holding a Cube

Question 1

Cube : 3 Months

Answer 1

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

Question 2

Cube : 4 Months

Answer 2

Primitive Squeeze Grasp: visually attends to object, approaches if within 1 inch, contact results in hand pulling object back to squeeze against other hand or body, no thumb involvement.

Question 3

Cube : 5 Months

Answer 3

Palmar Grasp: fingers on top of surface of object press it into center of palm with thumb ABD

Question 4

Cube : 6-7 Months

Answer 4

Radial Palmar Grasp: fingers on far side of object press it against opposed thumb and radial side of palm (6) wrist is straight at 7

Question 5

Cube : 8-9 Months

Answer 5

Radial Digital Grasp: object held with the opposed thumb and fingertips, space visible between (8) wirst is extended at 9