05-01c: Developmental Sequence

Question 1

Birth - 1 month

Answer 1

• “Physiologic flexion” position (Snuggled up)
• Beginning to strengthen postural muscles
• Can lift head briefly in prone
• “Pull to sit” results in head lag

Question 2

2-3 months

Answer 2

• Able to hold head up when held at shoulder
• Prone: Can hold head to 90˚ extension, briefly; maintain 45˚
• Head bobbing upright in supported sitting position
• Can get chest up in prone with some weight through forearm (prone on elbows)

Question 3

4-5 months

Answer 3

• Log rolls (nonsegmental) from prone to supine
• Pivots in prone
• Bears weight through extended arms in prone
• Able to bridge
• Forward propping beginning in sitting
• Sits along briefly
• Equilibrium reactions in prone
• Grasps and releases toys

Question 4

6-7 months

Answer 4

• Log rolls (nonsegmental) from supine to prone
• Segmental rolls from prone to supine
• Holds weight on one hand to reach for toys
• Protective extension forward in sitting
• Protective extension to the side in sitting
• Equilibrium reactions in supine
• Gets into sitting without help
• Stands while holding on to something

Question 5

8-9 months

Answer 5

• Quadriped position
• Moves from sitting to prone
• Sits without hand support
• Protective extension backward in sitting
• Crawling
• Cruises (walking with UE support) along furniture

Question 6

10-11 months

Answer 6

• Equilibrium reactions in quadriped
• Stands briefly without support
• Pulls to stand using half-kneel intermediate position
• Walks with one hand support

Question 7

12-15 months

Answer 7

• Equilibrium reactions in standing
• Protective extension forward in standing
• Walks without support

Question 8

16-24 months

Answer 8

• Protective extension sideways and backward in standing
• Develops skills for play: squats, kicks ball, throws ball (2-handed), propels rides on toys
• Walks up and down stairs ONE STEP AT A TIME (Step-to) with one hand hold

Question 9

2-3 yo

Answer 9

• Walks up and down stairs with reciprocal gait pattern
• Jumps off a step (cannot jump up)
• Catches a large ball in standing

Question 10

3-4 yo

Answer 10

• Mature gait pattern: heel strike and toe off, good use of joints; not developed as adult gait pattern
• Jumps off the floor (clears air)
• Catches a small ball in standing
• Gallops

Question 11

5-8 yo

Answer 11

• Gait is fully mature

- Skips

Question 12

9-12 yo

Answer 12

• Mature pattern of movement with runnung , jumping and throwing
• Improved balance and coordination, working on skill