A member asked:

Our sixteen year old grandson has experienced a lots of muscle mass in his right arm.her has a strong bicep, however now can hardly throw a beach ball?

A doctor has provided 1 answer

Bicep tendon rupture: If the bulge is on the front and end of arm (near elbow area), then this may be a rupture bicep . See doctor for exam.

Answered 7/20/2012

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