The data showed that on average pitchers required 35 days to recover from an oblique injury and position players took on average 26 days to return. Though, it should be noted that variance was due to a pitcher’s build up being different to return to the mound. (4,6) The bad news is that if you were part of the 7.9% of players that received a cortisone or Platelet-rich Plasma (PRP) injection, it set you back another 11 days on average. (4)
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Oblique injuries are very unique in that the re-injury rate is around 12% with about a third of them being in the same or following year4. This makes it vital that the return to play protocol is designed with a slow progression and return to on field activities are not rushed in any way. Athletes can re-injure themselves with something as simple as the stationary bike. In order to progress them into on field activities it is important that they demonstrate the ability to stabilize both statically and throughout a full ROM, furthermore they need to demonstrate the ability to rotate powerfully and decelerate effectively all without any restriction of any kind.
https://pbats.com/oblique-injuries-return-to-play/
https://www.p2sportscare.com/articles/spine/oblique-strain/