Is cortisone injection absolutely necessary with thick-skin/oily nose if swelling is still there one year post surgery?

Hello, thank you for question and information, based on them and as you completed your healing process, a Revision Rhinoplasty can improve  your result for better and well proportioned.By Closed and Atraumatic technique will provide you minimal edema&swelling, maximal healing and no scar on your columella.Regards,

Hi there and thank you for your question. When it comes to steroid injections into the nose following rhinoplasty, timing becomes important. In the first 6 months after rhinoplasty, steroid injections reduce the scar formation, which eventually adds to the overall swelling of tissue. This type of injections leads to more refined contours as they affect the overall swelling. So the final result would look different from the outcome when early steroid injections were applied. 
Adding steroid injections more than 12 months after the rhinoplasty can still have a significant impact on the result. However, more scarring needs to be treated, which frequently results in more sessions required. 
In both cases it is very unlikely to expect the same result when combining surgery with steroids vs. just letting it heal without any additional steroid injections. 
Kind regards, 
GB