6 Months: Sidelying With Pelvic Femoral Dissociation

Life is so exciting for the six month old; once she learns to roll to the side, it is fun to play in this position.   Beyond fun for the little one, what special things are happening with development at this stage?  After all, play is child’s work.

  • Mastering the balance of flexion and extension in the trunk:  she is able to play in sidelying without falling forward or backward.
  • Increasing shoulder girdle control and stability- allowing propping on one arm to play.
  • Emergence/increasing lower extremity dissociation: one foot can prop to meet the ground and stabilize in this position.  To do this, one leg must be flexed, the other extended while weight is increasingly shifted to the hip that contacts the floor.
  • Foot weight-bearing: bringing the foot to meet the ground and getting some weight on to different parts of the foot in order to prepare for standing.
  • Lateral flexibility and of the trunk/rib cage.
  • Lateral head righting against gravity.

From this position your little one can grab toys to mouth, providing a whole new level of independence for exploration!  All of these movements build the foundation for transitions that come in later months like progressing to side sitting, getting up on all fours and pulling to stand.

5 Months: Feet to Mouth

Your 5-month-old just learned to lift his feet from the ground and grab them with his hands.  What’s next?  Putting the toes into the mouth, of course!

This is such a sweet phase of development.  Here is a quick review of the amazing things that are happening as your baby pulls her toes to her mouth.

  • Activated abdominal muscles!  You can see activity in the lower abdominals from the wrinkles on this baby’s tummy.  Additionally,  the baby’s pelvis is up off the ground.
  • Developing and strengthening downward visual gaze/capitol flexion.
  • Developing and strengthening balance of postural flexors and extensors, now in advancing to a diagonal motion.
  • Grasping and pulling feet with either one or both hands.
  • Activating quadriceps muscles as the leg straightens.
  • Stretching out hamstrings from the physiological flexion present at birth.
  • Stretching the toes into extension.
  • Foot desensitization (with the heel pounding that happens when the feet hit the floor again).
  • Tactile input from mouthing, grabbing, stretching; preparing the feet for walking.
  • Developing general body awareness.

When a baby discovers this position, they are becoming experts at rolling to their side.