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#.
1 Costochondritis is a common cause of chest pain in children and adolescents. 2  It accounts for 10%-30% of all chest pain in children. 3  Annually, doctors evaluate about 650,000 cases of chest pain in young people 10-21 years of age. 4  The peak age for the condition is 12-14 years of age.