It is formed by the lower part of the femur, the tibial plateau and the knee cap. It enables hinge and rotating movements as the connection between the upper and lower leg. This means that we can not only bend the lower leg backward but also rotate the lower leg and foot towards the upper leg.
By the time they're 9 months old, most babies have developed the fine motor skills â the small, precise movements â needed to pick up small pieces of food and feed themselves. You may notice that yours can take hold of food (and other small objects) between forefinger and thumb in a pincer grasp.
Babies urinate around the clock and then at about the average age of 18 months, as the sphincter muscles mature, toddlers will make the transition from urinating around the clock to only urinating during the waking hours as is the case with most adults.