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.
They start to throw things. They pull up to stand, they stand holding onto furniture, and they can walk when led. By the time they are 12 months old, most babies can weigh three times what they weighed at birth and gain about an inch per month in length. The average infant at one year may be between 26â30 inches long.