Not really. The Lancet article NYT cited stated:
Despite the effectiveness of corticosteroid injections in the short term, non-corticosteroid injections might be of benefit for long-term treatment of lateral epicondylalgia. However, response to injection should not be generalised because of variation in effect between sites of tendinopathy.
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The issue I have w/the article is that we have no insight into how the behaviors differed from the group that got the cortisone shot vs those that did not.
The biggest risk for people who get a cortisone shot is that they abuse what it does and do not alter anything in their future workouts or exercises that caused the problems to begin with. In my previous post in this thread I cited I used the cortisone but then altered my workout and incorporate to this day rotator cuff exercises and as a result have had no problems whatsoever. If I took the cortisone shot and did no RC work and continued to bench heavy on flat barbell, I have no doubt that I'd have had major issues with my shoulder.
What this means is that I would suspect, if we could get into the details of the lancet study, is that the TE sufferers that received a cortisone shot probably were awestruck by how awesome it works (w/my shoulders it was like having new shoulders within 10 min of the shot) and thought, hey this is great, let me go out and use that luxilon big banger on my Roddick PDGT and play tennis like I used to and thus within 6 months were in even worse shape.
In contrast, those that take long lay offs (~6 months of avoiding the activity causing the TE) and do the PT and other other mechanical adjustments will in fact do better than the group I described above because they gave themselves real time to heal and then modified things to eitehr strengthen problem areas that led to the tendinopathy.
Cortisone can be of benefit but you need to incorporate PT and modify the problems that put you in pain in the first place so you won't need a future cortisone shot or surgery. I am on the fence on TE being tendonitis v tendonosis but for my bicep tendons in my shoulder (RC), it was clearly inflammation based on an examination by my ortho and cortisone got the inflammation down immediately vs a long, unnecessary lay off.
Ideally, if we knew that the people getting cortisone then did the exact same regimen (theraband flex bar, whatever PT) as those that took the lay off and PT and then still had worse outcomes 6+ months later, then I'd be willing to say cortisone is "bad". But we don't know that info. If those that received the cortisone felt so great after that they actually increased the amount of TE inducing activities and did no PT vs the other group, then obviously they would be in worse pain down the road.