Motor Development Lecture Flashcards

1
Q

Four Major Milestone Types

A
  • motor
  • sensory
  • communication
  • feeding
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2
Q

Goals of Motor Development

A
  • control of body against gravity
  • maintain body’s COM within the BOS
  • intrasegmental and intersegmental isolated movements
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3
Q

What is a Neonate?

A

0-28 days after birth

  • dominated by physiological flexion
  • disappears within 1st month of life (if full term)
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4
Q

Prone Lying Positions

A
  • head: turned to one side for breathing and feeding
  • UEs: arms adducted into side of body, elbows caudal to shoulders, hands fisted
  • Hips: strong hip flexion
  • pelvis: ant. pelvic tilt
  • butt in the air
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5
Q

Prone on Elbows Positions

A
  • head: ATNR is diminishing, midline cervical extensors used, cervical flexors are developing
  • hips: fairly stabilized, need abs and extensors to help; need neutral pelvis or slight post. pelvic tilt
  • LE: slightly abducted and ER, knees slightly flexed
  • UE: at 2 mos control develops, abducts and flexes shoulders, elbows just below shoulder or slightly ant.; elongation in scapulohumeral
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6
Q

Prone on Extended Arms Significance

A
  • triceps and serratus are active now
  • trunk extensors are active
  • they can now get up on their hands and begin to reach for things (if stable)
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7
Q

Pivot Prone Significance

A

signifies scapular and pelvic stability that can alternate

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8
Q

Quadruped Significance

A

requires hip joint stability, trunk stability, and shoulder stability

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9
Q

Crawling

A
  • 3-9 mos
  • “moving slowly by dragging the body along the ground”
  • think Army crawl
  • belly is on the floor, LEs are passive
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10
Q

Creeping

A
  • 6-7 mos
  • “to move across the floor on hands and knees”
  • trunk NOT intact with floor
  • reciprocal, contralateral movements of UEs and LEs
  • may progress to plantigrade creeping (bear walking)
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11
Q

Supine Progression at 5 mos

A
  • ANTR until 4 mos
  • when physiological flexion disappears, head lag appears
  • head in midline
  • “fixing” is observed
  • hands to knees and feet, feet to mouth
  • shoulder protraction, hands to midline, ipsilateral reach then contralateral, development of body scheme
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12
Q

Non-Segmental Rolling

A
  • 3 mos
  • body follows position of the head/neck
  • body moves as a unit
  • 0-6 mos
  • prone to supine around 5 mos
  • supine to prone around 6 mos
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13
Q

Segmental Rolling

A
  • 6 mos
  • rotation within the spine (intra-axial)
  • body moves in separate segments
  • prone to supine around 5 mos
  • supine to prone around 6 mos
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14
Q

Supported Sitting

A
  • completed C-Curve
  • Pelvis is perpendicular to the surface on which he sits
  • sacral sitting may indicate a pathology
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15
Q

Propped Sitting

A
  • approx. 5 mos

- diminished hand grasp reflex allows for child’s hands to be placed on ground flat

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16
Q

Ring Sitting

A
  • 6 mos

- no UE support

17
Q

Half-Ring Rising

A
  • developing dissociation of LE movement
  • one hip ER, flexed and knee flexed
  • allows for best/most environmental freedom
18
Q

Side Sitting

A
  • allows most possibility for changing positions
19
Q

Sitting Progression

A

Supported sitting –> Propped Sitting –> Ring Sitting –> Half-Ring Sitting –> Long Sitting –> Side Sitting

20
Q

Standing Progression

A
  • absence of automatic stepping after 2 mos (Abasia)
  • lack of weight bearing through LE ( Astasia)
  • Pull To stand: 7-8 mos
  • Independent Standing: 10 mos - need eccentric control for lowering, will also use tall kneeling and half kneeling
  • Cruising
21
Q

Walking

A
  • ind. bipedal locomotion: plantar grasp must integrate before this, squat play
  • walking appears b/t 10-15 mos
  • start with high guard –> mid guard
  • gait parameters change (age 1-3 yrs)
  • running around 3-4 yrs
22
Q

Head Righting Reactions

A
  • balance

- head attempts to achieve horizontal mouth position

23
Q

Tilting Reaction

A
  • balance

- surface moves, body reacts

24
Q

Equilibrium Reaction

A
  • surface doesn’t move, perturbation occurs at body level
25
Q

Protective Response

A
  • balance
  • when COM is pushed beyond the borders of the BOS
  • Child puts out hand or foot
26
Q

Fine Motor Development

A
  • Birth-2 months: Visual regard, not much fine motor present otherwise
  • Visually directed reaching: 3-5 months
  • Plays with feet: 5 months
  • Ulnar fingers predominate grasp: 5-7 months
  • Forefinger dominance: 10-11 months
  • Graded pressure: 12 months
  • Scribbles on paper: 15-18 months
  • Builds a cube tower: 18 months
  • Turns pages of a book: 21 months