My son is 11 and a pitcher in baseball. will push ups and pitching wear on his rotator cuff? will a sore rotator cuff cause other arm issues?

Pitching: While pitching can be stressful to a shoulder, at 11 it is more likely to cause bone/growth plate issues. The rotator cuff is less vulnerable at his age, but can still get inflamed. Push ups and other exercises to strengthen his body should help reduce injury. Make sure he follows appropriate pitch counts/limits and consider using a pitching coach to monitor his form.

Probably not : The key with young pitchers is to limit innings pitched and the use of curve balls.

Yes!: I can not caution you enough to limit his pitching until he is older and more mature. I have seen time and time again in my practice young boys damage rotator cuff as well as serious elbow fracture injuries from this. Focus on other positions for now. Let him pitch later when his growth plates are fully fused. Trevor Hoffman from the Padres did not pitch until after high school!