Alex is a very unlucky person. At least it seems that way at times. A couple of months ago he broke his arm while playing, and luckily his broken arm healed very well. A few weeks ago it was the turn of his other arm. Once again a broken arm, this time the left one, and once again a visit to the hospital, a cast, and lots on inconvenience.
Meanwhile that have already removed his cast, but because the bone was not set very well he now has a strong plastic cast around his arm. Just make provide a bit of extra security for the time being. This way his bones can mend a bit better.