The causes of rotator cuffs include calcium deficiency and malnutrition, which can be treated with nutritional supplements and rehabilitation exercises. There are many causes of rotator cuffs in infants and young children. Calcium deficiency during pregnancy or after birth may cause rotator cuffs, as well as poor posture, such as sitting or kneeling incorrectly for a long period of time, may also lead to rotator cuffs. In the treatment of rotator cuffs, do not believe in the so-called leg-binding therapy, which is not only ineffective, but also may cause damage to the infant’s hip or knee joints. Currently, the main treatment method is nutritional supplementation, such as calcium supplementation, breastfeeding, and appropriate consumption of fish and shrimp. It can also be treated by exercise, such as leg press, kicking and leg-pinching exercises, etc., but pay attention to the strength and posture when exercising. Looped leg is a common bone problem in infants and children. If necessary, please seek medical advice and treatment under doctor’s guidance.