Question
A newborn is 6 months old and makes a sound of bone friction when stamping their left foot. Is this a normal phenomenon? Why does such a sound occur?
Answer
The sound made by a baby when they stomp their feet is typically normal. This is because their muscles and tendons are not yet fully developed, and the tendons around the joints are relatively loose, with the bones being softer. When a baby performs flexion and extension movements, friction may occur between these tissues, resulting in a sound. This phenomenon usually disappears as the baby grows older and their muscles and tendons develop. Generally speaking, if the baby does not show any signs of discomfort or pain, and there is no swelling or redness after activity, this may be part of the normal growth process and there is no need to worry excessively. However, if the sound persists or is accompanied by other symptoms such as swelling, redness, or pain, it is recommended to consult a doctor for further examination.