paulbball wrote:Oh look, actual data from a medical journal:
http://journals.sagepub.com/doi/pdf/10.1177/1941738115608361
13 out of 61 players didn't return to play. Being taller is bad, out of the players who did not return to play, 69% of them are centers. Porter is a PF sized large boy so this isn't a good injury for him to have at 19.
Players who returned from this suffered a lower PER in their first year, and differences were not significant in years 2 and 3, and the difference in career length is also not significant.
tl;dr Expect a slow recovery and maybe a 1/5 chance that Porter never play again. If he plays, he'll probably be fine in a year or two.
Articles like these are always taken with a grain of salt, especially because we don't know why the 13 athletes in the study didn't return to sport. There's always the chance they just sucked before the injury, in which case getting a surgery isn't going to help their skill level in any way. The other issue is sample sizes at the different age groups; elite athletes are a pretty unique group of individuals, so getting higher powered, stratified studies on them is going to be difficult. A lot of these return to sport articles also don't necessarily take into account the skill level of an athlete. A 20 year old is not only going to heal differently, but also will have an entirely different skill set than other 20 year-olds or 25+ year-olds.
In my amateur opinion, MPJ should make a 100% recovery with a microdiscectomy, as it is a relatively minor procedure. His ceiling nor his floor will likely be affected; he'll just lose out on some development time. Long-term studies regarding career longevity don't have much data behind them, so no one really knows what the re-injury rates are here. It'll likely depend on how he hurt himself - hopefully it was from poor lifting form on a deadlift, which should be easily correctable.
Good meta-analysis here with more information:
https://www.ncbi.nlm.nih.gov/pubmed/26641847