Gross Motor Milestones in Infants 0-14 Months

0-3 months

	OVERALL	1-2 MONTHS	2-3 MONTHs
SUPINE	physiologic flexion hip and knee; unable to hold head in midline	sporadic head to midline; sporadic cervical rotation; increased extensor activity; asymmetry of limbs	hands to midline; symmetrical movement patterns;
PRONE	increased physiologic flexion hip and knee; elbows posterior to shoulders; head to side	slight head lift to 45 degrees; unable to hold head in midline; flexion contractures decreased	able to push through hands; start to lift head and shoulders; head lift to 45 degrees
SITTING	weight of head pulls them anterior; shoulders anterior to hips; unable to hold head in midline wide base of support (ring sitting) need a lot of support at proximal trunk	pull to sit- head lag; not able to hold head in midline	pull to sit-able to tuck chin and hold in midline; vertical righting; weight bear through hands (propped sitting)
STANDING	supported standing; reflexive moment in response to stimuli on plantar aspect		begin to accept weight; astasia-abasia,

4-6 MONTHS

	OVERALL	5 MONTHS	6 MONTHS
ALL POSITIONS	better head control; symmetrical movements; less physiologic flexion; developmental spiralling; better trunk activation; co-activation of flexors and extensors;	rolling with rotation (roll as a unit/log roll)	weight shifting; protective reactions
SUPINE	elevating hands to knees; chink tuck; using abdominals; supine to sidelying	grabbing feet	hands away from body to reach for objects; transfer objects from one hand to the other
PRONE	cervical and thoracic extension; elbow extension when pushing up; elbows more in line with shoulders; good head and upper trunk control	shoulders off floor when pushing up	swimming motion; equilibrium reactions; scooting backwards; prone to quadraped; prone pivot
SITTING	narrower base of support; no head lag pull to sit; more extensor activity	unsupported sitting	sitting without support; pelvis in neutral;' weight-shifting; reaching for toys
STANDING	early weight-bearing and more upright posture	hips and knees less flexed; appear bow-legged ankles not in neutral position	upper and lower trunk control; bouncing in this supported position

7-9 MONTHS

	OVERALL	8 MONTHS	9 MONTHS
ALL POSITIONS	roll with rotation; lateral trunk control; prone pivoting		side prop position with weight through shoulder girdle;crawling emerging quadruped to half-kneeling; reciprocal creeping
SUPINE
PRONE		prone pivoting
SITTING	weight shifting; vertical righting; protective reactions;	unsupported sitting; narrower base of support;	sitting to prone position; sitting to quadruped; weight-shift to reach for toys
STANDING		pull to stand; supported standing on toes