My daughter had OCD and it was a total overuse issue, as 14 others in our gym (at the time) had it or had had it...we were in a gym run by Eastern Europeans back then when the mantra was "if 10 reps are good, then 100 must be better"... the numbers that these kids did were insane. Our coach tried to say it was "genetic" but we had girls of many different back rounds (Caucasian, African American, Korean, Chinese etc) and the only common denominator for all was that gym and their training there...
My daughter had the surgery and didn't set foot in the gym for 7 months ( per doctor's orders because we knew her coach would make her practice) and she is the only one of the 14 that did not have any sequelae ( another surgery, OCD again) and continued in the sport...about half had a second surgery on the same elbow because they rushed back into the gym before it was fully healed, the other half didn't have another surgery but had long bouts of "resting their elbows" such that they left the sport...many of these girls dive now..
Our surgeon told us that resting only really works if they have no plans to return to their sport at the level they were at (i.e. maybe a college senior who is finally done)..