steroid injections following rhinoplasty can help with swelling and inflammation that exist in the setting of delayed healing. This happens in occasional patients and is unique to the individual. Often times multiple injections are required, but the exact number and spacing is determined by the patients healing process. By the one year point, most all healing should have occurred, and final results should be realized.
The post rhinoplasty healing process is different for every patient. Steroid injections are used to assist with areas of delayed healing or increased swelling. Therefore, there is no hard rule and depends on each case individually. However, there ultimately comes a time when steroid injections are not helping with the healing process any further. At about the 1 year mark, the nose is mostly healed to its final form. Some patients need up to 2 years in cases of complex cases. Overall, I recommend you discussing options with your trusted surgeon and accept your final result at the 1-2 year mark if he/she believes it is completely healed. Or, discuss a revision if you both agree and desire to move forward.