KNOCK KNEES
People who have a gap between their feet while their knees are close together in a standing position have what is known as knock knees.
Knock knees, also known as genu valgum, is also normal in a child’s development, usually occurring from around 2½ years old. Children usually outgrow knock knees as their legs start straightening when they are around 4-6 years old. By the time they reach around 8-10 years old, their leg alignments would likely last them into adulthood.
However, improper development may cause a child to retain knock knees.