TIS                         
Chapter 5
Developmental Milestones 4-7 Months

Developmental milestones that generally appear during four to seven months of age are covered in this chapter. Postural control is beginning and head right reactions through optical, labyrinthine, and Landau reflexes are noted in the milestones listed below.

THE MILESTONES | 4 - 7 MONTHS AREAS OF CONCERN COMPARISON OF PRE-TERM AND FULL-TERM MOTOR DEVELOPMENT
Full-termPre-term
4 months Sitting with slight support,
back straight, head erect
Needs more support in sitting
scapular retraction, forward head
position, fisting
5 months Prone on elbows, shoulder-
scapula co-contraction, back
extension with head upright
Difficult pushing up and maintaining
position; minimal back extension
with head in line with trunk
6 months Prone: weight on pelvis, lateral
weight shifting during reaching
in prone
Prone: weight taken on lower rib
cage, minimal head righting
Supine: sufficient abdominal and
LE strength to lift pelvis, activate
Abdominals, reach for feet
Supine: no lifting of pelvis, reach for
knees, abdominals do not stabilize
pelvis
Rolling with rotation supine to
Prone
Emergence of lateral right, may roll
hyperextension of back
Supine: sufficient abdominal and
LE strength to lift pelvis, activate
Abdominals, reach for feet
Supine: no lifting of pelvis, reach for
knees, abdominals do not stabilize
pelvis
Sitting: back straight, arms free,
Beginning to shift weight laterally
In preparation for transitions
Prop sitting: back rounded, lack of
lateral weight shift
Bears weight in standing with
Wide base, grading of flexion
And extension
Minimal weight-bearing: often up on
toes, stiffening of LE or extremely
wide base

Atypical behaviors of the 4 to 5 month-old: Atypical behaviors of the 6 to 7 month-old: Treatment interventions should continue to be directed toward the caregiver along a developmental course. Suggestions include: prone lying with encouragement to reach and push-up, sitting on a small bench supported, positioning in a corner chair. Tall kneeling against a mat or to a lowered table, weight shifting on lower extremities, load bearing on the upper extremities.


Go To Chapter 6

Return to Table of Contents