gang, just catching up on the series of threads. great info being tossed around. I'm a sport doc in Canada. x-ray demonstrates obvious abnormalities. what xrays do not demonstate is edema of the growth plate in <14 yoa athletes. This is only recommended if 6-8 weeks of conservative management fails. just as an fyi.
as for cessation of throwing... define throwing vs. pitching. to deload or detain (rest or reduce volume) is essential for recovery. The time frame is dependent upon 1) conditioning status of the athlete 2) volume of throwing 3) history or profile for injury 4) where is the athlete on the spectrum of the Long Term Athletic Development Process?
The athlete that is physiologically developing and pitching and is doing offseason conditioning is a challenge to coordinate. The issue i see too, growth spurts and motor control to pitch is critical to arm health. the mature athlete >18yoa responds differently than a 12 -14yoa pitcher.
Time off is necessary but the "intention" is the important factor. working on throwing drills vs. no throwing is debatable but would be on an individual by individual basis and based on level of play and skeletal maturity.
I hope i didn't convolute the discussion.