Milestones

1 mo- prone

physiological flex

turn head side to side

1 mo- supine

physiological flex

1 mo- sitting

cervical supine fully rounded

1 mo- standing

primary standing using primitive reflexes

reflexive walking

external control of COG

2 mo- prone

arms abduction

2 mo-supine

asymmetrical movement of extremities

head lags when pulled supine to sit

2 mo- sitting

extensor muscles allow antigravity control

3 mo- prone

WB on forearms and lift head to 45 degrees

3 mo- supine

head moves into midline

bring hands together at chest lvl

3 mo- sitting

Jut chin and elevate shoulders

4 mo- prone

improved neck elongation

lift head to 90 degrees

4 mo-supine

bring head into midline

bring hands to knees

roll from supine to side-lying

right head laterally

pull to sitting w/ head in midline

4 mo- sitting

cervical and thoracic spine elevation control

5 mo- prone

WB on UE extension

reach w/ UE

assume swim position in ext

5 mo- supine

bring feet to mouth

pull to sit w/o head lag

roll prone to supine

5 mo- sitting

prop up on exted arms w/ assistance

6 mo- prone

equilibrium reactions develop

pivots w/ symmetrical UE movement

6 mo- supine

bring hands to feet w/ head lifted

pull to sit leading w/ head

roll supine to prone

6 mo- sitting

sit w/ erect spine

forward sitting protective reactions

6 mo- standing

bounce up and down

7 mo- sitting

lateral sit protective reactions

trunk rotation

8 mo- sitting

equilibrium reactions

8 mo- transition

rotate sit to quadruped

creep and reach for objects

move to tall kneeling

8 mo-standing

pull to stand using symmetrical leg ext

9 mo- sitting

side sit

9 mo- transition

from half kneeling to standing

9 mo- standing

cruise sideways w/ hip abductors/adductors

cruise in semi-turned position

10 mo- sitting

assume various sitting postures

backward protective reactions

10 mo- transition

lower from stand to sit symmetrically

plantigrade creeping

10 mo- standing

cruise w/ one hand support

11 mo- transition

assume stability in half kneel position while playing

lower self asymmetrically

11 mo- standing

standing independently

12 mo-standing

weight shift in stance

walk independently w/ modifications