Your arm is kept in your shoulder socket by your rotator cuff. The rotator cuff is a network of four muscles that come together as tendons to form a covering around the head of the humerus. The rotator cuff attaches the humerus to the shoulder blade and helps to lift and rotate your arm.otator cuff tears are more common in the dominant arm. If you have a degenerative tear in one shoulder, there is a greater risk for a rotator cuff tear in the opposite shoulder -- even if you have no pain in that shoulder.
In brief: Growing pains... generally strike during two periods: in early childhood among 3- to 5-year-olds and, later, in 8- to 12-year-olds. In brief: Growing pains... generally strike during two periods: in early childhood among 3- to 5-year-olds and, later, in 8- to 12-year-olds. This is a helpful link that goes into more detail: http://kidshealth.org/parent/general/aches/growing_pains.html#.
What are growing pains? Occasional aches and sharp, throbbing pains are very common in children between the ages of 3 and 5 and then again between 8 and 12. Kids most often feel growing pains in the legs, especially in the front of the thighs, behind the knees, and in the calves. They tend to strike in the late afternoon and evening and during the first hours of sleep at night. By morning, the pains are gone.