Baby calf curvature is normal and birth time, nutritional status and other factors, just a few months of baby calf curvature is a normal physiological phenomenon, after a period of time will return to normal, if there is no improvement for a long time may be the O-legs, need to take treatment measures as soon as possible. Due to the newborn baby, will keep a period of time to curl up the sleeping position, the calf bend is normal, after a period of time will be improved, do not need to worry too much. Long-term persistent calf bending may be O-shaped legs, mainly due to vitamin D deficiency, calcium deficiency, obesity, etc., may also be accompanied by excessive sweating, easy to startle, sleep disturbance and other symptoms. O-shaped legs caused by vitamin D and calcium deficiency can be improved by taking oral vitamin D or calcium tablets, such as calcium, magnesium, zinc and copper vitamin D tablets, calcium chondroitin tablets, calcium vitamin D and vitamin K softgels, calcium citrate tablets and so on. Obesity caused by O-shaped legs also need to control body weight, relieve lower limb weight bearing, improve the symptoms. If your baby’s calves are severely curved, you should seek medical attention and wear orthotics under your doctor’s guidance to improve the shape of your legs and relieve symptoms.