Gross Motor & Postural Development Flashcards
Prenatal development
- Fetus has spontaneous movement at 3 months
- Mother will feel fetus moving at 4 months
- Fetus is viable at 6 months
- Fetal position of flexion develops at 7-9 months
- Compacted space of womb allows fetus to develop strength and posture as it moves against resistance
Postural development: stage 1 prone
- Poor head control, rests head to one side
- Retracted shoulders
- Flexed knees and hips
- Weight bears through chest, shoulders, and face
Postural development: stage 1 supine
- Primarily flexion
- Weight bearing shifted to lateral head, trunk, and thigh
- Head is to one side
- Hips and knees flexed but abducted because of gravity
Postural development: stage 1 sitting
Total flexion forward due to decreased extension strength
Postural development: stage 2 prone
- Shoulders retracted
- BUEs flexed and abducted
- COG through chest and upper abdomen
- Emerging ability to extend neck, but not sustained
Postural development: stage 2 supine
- COG through head and upper trunk
- Unable to turn to side
- Asymmetrical tonic neck reflex (ATNR): UE extends and head turns one way, opposite LE flexes and moves laterally
Postural development: stage 3 prone
- Neutral pelvis
- Emerging shoulder protraction
- COG is abdomen, chest, thighs
- Some forearm propping
- Dissociation of head and trunk allow for lateral trunk flexion and weight shift
Postural development: stage 3 supine
- Neutral pelvic tilt
- Hip abduction due to gravity
- ATNR inhibited: allows BUEs to move freely
- Shoulder protraction allows arms to come to midline
- Chin tucked, head in midline and can move freely w/o BLE involvement
Postural development: stage 3 sitting
Burst of extensor strength will thrust baby upward but may lead to falling backwards
Postural development: stage 4 prone
- Anterior pelvic tilt
- Weight bearing through forearms (prone on elbows)
- COG through pelvis, thighs, and lower abdomen
- Neck extension due to increased extensor strength in trunk and neck
- Unilateral kicking
Postural development: stage 4 supine
- Symmetrical posture present due to symmetrical tonic neck reflex (STNR): arms and neck either flex or extend, legs do the opposite
- BUEs flexed and adducted allows for sustained play in midline
- Dissociation of limbs from trunk
- Can flex legs unilaterally
Postural development: stage 4 sitting
Emerging ability to extend trunk and head, not using arms to prop yet
Postural development: stage 5 prone
- Anterior pelvic tilt
- Shoulder protracted, elbows extended, hands propped on floor (prone on extended UEs)
- Lumbar spine extension
- COG: thighs, pelvis, low abdomen
- Ability to pivot by weight-shifting on hands
- Rolling from prone to supine freely
Postural development: stage 5 supine
- Shoulders and UEs can freely move separate from trunk
- Can use hands to bring feet to mouth
- Crossing midline
Postural development: stage 5 sitting
Propped sitting with UEs due to increased strength through BUEs