Frequently children present with delays in motor skills that are due to restrictions in joint motion.  Many times these are secondary to injury or surgery, but often they are due to a lack of motor activity or asymmetry in muscle activation.  Children in particular are very motivated to move and explore.   When a child lacks appropriate range of motion or strength they are likely going to compensate in some way causing further dysfunctional movement patterns perpetuating the original problem.  Since foundational skills build upon one another, it is important to promote appropriate and controlled movement rather than just more bad movement.