Why do some patients need retainers and some don't need retainers? My surgeon said that I don't need retainers

After 25 years of performing rhinoplasty surgery, we do not recommend or utilize any sort of nasal retainer to prevent nasal collapse. Generally speaking, nasal collapse is prevented by reconstructing nasal valves during rhinoplasty surgery, or supporting them properly with sutures. I hope this answers your question. Sincerely, Dr. Joseph

Your question is lacking context and makes little sense.
I suggest you follow up with your provider if you have questions or concerns.
Best,
Mats Hagstrom, MD