At what age is idiopathic toe walking considered abnormal?

Other causes of toe walking are...

Longstanding equinus may lead to valgus deformity in the hind foot, true or false

Habitual toe walkers stand still with their foot flat on the floor, true or false?

Habitual toe walkers become fatigued whereas congenital toe walkers don't, true or false?

How do you assess toe walking...

Normal ankle ROM for a child should be...

How would you treat idiopathic toe walkers?