Gower's sign is seen in duchenne muscular dystrophy, where the child is unable to stand on its own, but need to support himself by his hands to get up. It is a sign of proximal muscle weakness. Duchenne muscular dystrophy (DMD) (also known as pseudohypertrophic muscular dystrophy or muscular dystrophy - Duchenne type) is an inherited disorder characterized by rapidly progressive muscle weakness which starts in the legs and pelvis and later affects the whole body. ...

A set of images illustrating Gower's Sign can be seen here[1] - showing the way a child supports herself on her hands as she gets to her feet, then uses her hands to brace her upper body as she gains an upright position.