Parents presenting to the pediatrician’s office are concerne…

Parents presenting to the pediatrician’s office are concerned about their 3 year-old son falling more, being unable to climb the steps on his outdoor playhouse, and having to use his hands and arms to get up from a squatting position.  What is the medical sign called where a child uses their hands and arms to “walk” up their own legs to stand up from a squatting position?