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Understanding Motor Milestones in Infants

May 8, 2025

Development of Motor Milestones in Children (Birth to 24 months)

Introduction

  • Lecture focuses on motor milestones in children from birth to 24 months.
  • Important for parents to understand the progression of these milestones.
  • Overview of what pediatricians check for during visits.

Motor Milestones

Birth to 4 Months

  • Head Control
    • Newborns have little to no head control.
    • By 1 month: can lift head to 45°.
    • By 2-3 months: can lift head to 90°.
    • By 4 months: can lift head and chest (puppy pose).
  • Primitive Reflexes
    • Reflexes must resolve for voluntary control.
    • Pediatricians check reflexes like the startle reflex and tonic neck reflex.

4 to 7 Months

  • Rolling Over
    • Requires head and chest up and uses momentum.
    • Time on tummy is crucial.
  • Sitting
    • 6 months: sits briefly with hands for support.
    • 7 months: less reliance on hands.
    • 8-9 months: can sit independently and play.
  • Development is Neck Downwards
    • Pediatricians check protective reflexes (lateral parachute).

6 to 12 Months

  • Standing
    • 6 months: enjoys supported standing.
    • 9-12 months: pulls to stand, cruises.
  • Walking
    • Requires backward parachute reflex for stability.
    • Typical children might skip crawling.

12 to 24 Months

  • Early Walking
    • 12-17 months: typical walking begins.
    • Characteristics: wide gait, arms up for balance.
  • Advanced Walking and Play
    • 18-24 months: running, climbing stairs, kicking, and throwing balls.
    • By 24 months: mature gait pattern.

Key Principles

  • Primitive Reflexes must resolve for voluntary movement.
  • Experience influences development.
  • Control develops from neck downward.
  • Postural/Protective Reflexes precede motor milestones.

Pediatrician Guidelines

  • By 4 months: discuss if no head control.
  • By 9 months: discuss if not sitting.
  • By 18 months: discuss if not walking independently.
  • Regression or loss of skills warrants a discussion.

Conclusion

  • Children develop at their own pace.
  • Important to not fixate on exact ages but to observe progression.
  • Pediatricians can evaluate if early intervention is needed.