Peds Motor Milestone Exam

onset of unsupported sitting

6 months (range = 3.8-9.2)

onset of belly crawl

6.8 months (Range = 2.7-11.7)

onset of hands/knees crawl

8.1 months (range = 4.6-12.7)

onset of stand with assistance

7.6 months (range = 4.8-11.4)

onset of cruise

9.3 months (range = 4.3-14.1)

onset of walking with assistance

9.2 months (range = 5.9-13.7)

onset of ascending stairs

11 months (range =6.1-19.1)

onset of standing unsupported

11 months (range = 6.9-16.9)

onset of walking without support

11.9 months (range = 8.2-16.8)

onset of descending stairs

12.5 months (range = 7- 20)

onset of crawling in quadruped

range = 5.2-13.5 months

when does fetal movement begin

8-9 weeks

when do fetal limb and digit movements begin

10 weeks

when do fetal head movements begin

11 weeks

when do fetal mouth movements begin

11-12 weeks

when do fetal facial movements begin

20 weeks

when do fetal eyes open and close

25 weeks

when do parents begin to be aware of fetal movement

14-20 weeks

asymmetric tonic neck reflex

stimulated by rotation of head, leading to to “fencing” position (ipsilateral arm extension and contralateral flexion). Lasts from birth to 6-9 months

Moro reflex

stimulated by head falling back or abrupt sound, leading to arm abduction and leg extension. Lasts from birth to 6 months

grasping/ palmar grasp reflex

stimulated by stroking the palm of the hand, leading to hand closing around fingers and gripping. lasts from birth to 3-6 months

stepping reflex

stimulated by support in standing with feet in contact with the ground and a weight shift forward, leading to rhythmic alternating steplike movements (mostly hip flexion driven). Lasts from 1 month to 4-6 months.

when does head lag resolve

2-5 months

when can infants lift up heads

2-3 weeks

when can infants prone prop

5-10 weeks

when can infants weight shift

5 months

onset of tripod sitting

5 months

onset of unsupported sitting in ring position

6 months

when do infants demo variation in sitting (e.g. W sit)

9 months

onset of pull to stand transition

range = 5.92 -11.89 months

sit to stand metamorphosis

muscle up from bilateral kneeling —> half kneel

onset of rolling and pivoting

5-6 months

when do most infants cruise

7-13 months

when do most infants take their first steps

12-13 months

onset of object oriented movements

5-9 days

onset of reaching

12-18 weeks

onset of grasping

5 months

when do babies usually swipe instead of grasping

before 4 months

onset of pincer grip

9-12 months

onset of crossing midline

6-7 months

onset of bimanual coordination

9 months

when should you be concerned if a child is not performing object directed movements

4 months

when should you be concerned if an infant has not had any reaching attempts

6 months

when should you be concerned if a kid doesn’t have a pincer grasp

12 months

when should you be concerned if a kid has a persistent use of a power grip/ no grip differentiation

12 months

when should you be concerned if a kid is not transferring across midline

9 months

when should you be concerned if a kid doesn’t show bimanual differentiation

12 months

what are early baby sounds

cooing, squealing, grunting, growling, raspberries

onset of babbling

6-8 months

onset of gestures

9-12 months

when is the first indication of word comprehension

9-10 months

when do infants demo receptive vocabularies

13 months

age of first word

13ish months

when do infants experience a vocabulary burst

16-20 months

at what age do infants have their first word combinations

18-24 months

when should you be concerned if a kid is not babbling

10 months

when should you be concerned if a kid is not gesturing

18 months

when should you be concerned if a kid ha s<50 words and not word combinations

24 months, now considered late talker