How long the swelling actually lasts

Where the one year figure comes from

The measurement usually behind it is a three-dimensional morphometric study of 40 patients, using 146 three-dimensional photographs taken after primary open rhinoplasty. The authors fitted a single curve through the pooled data and read three values off it: roughly two-thirds of the oedema resolved by one month, 95 per cent by six months and 97.5 per cent by one year.

Those are points on a fitted line, not group averages recorded at a visit. The study did not invent a timescale, it went looking for evidence behind one already in circulation: its opening observation is that the result may be masked for several months by swelling, and that no objective evidence supported that estimate.

The clock does not start where you think

Time zero in that study is the first postoperative visit, at one to two weeks. Everything it reports is decay from a swelling that was already established, and the curve settles at 84.4 per cent of that early postoperative volume rather than falling to nothing.

A separate series of 18 patients recorded its largest nasal volume at 7 to 14 days, which was also its earliest photograph, and a mean volume loss of 2.8 millilitres, give or take 0.7, between day 7 and beyond day 250. So the first fortnight, the part of recovery the headline figure is most often quoted about, is the part it does not describe at all.

Volume and visibility are not the same quantity

That smaller series measured two regions, the upper two thirds and the tip. By volume, the oedema was consistently greater in the upper two thirds. Read on its own that looks like a correction to the received wisdom about the tip, and it is not.

The same authors report that the tip's relative share of the swelling increases as recovery goes on, and describe tip oedema as more noticeable while being smaller in overall volume, because it is the tip's definition that the swelling obscures. Both things are true at once. No millilitre or percentage figure is published for either region.

Tip shape kept moving after the peak: anterior projection was greatest and width least at one week, then projection decreased and width increased progressively from day 7 to day 90, reaching what the authors call near resolution only at the final observation beyond 250 days. No millimetres, no standard deviations and no statistical tests are attached to any of that, and nothing was measured afterwards.

Nobody measured how the nose looked

Both studies measured geometry captured by three-dimensional photography: volume, projection, width. Neither used a blinded panel, an observer rating or a patient-reported score, and the one remark about what is noticeable comes with no number attached to it.

So none of these figures answers the question people actually ask, which is when they will stop looking as though they have had something done. A few millilitres spread across a nose is a real quantity and an unknown appearance, and neither study was built to bridge the two.

The American Society of Plastic Surgeons puts it to patients as initial swelling subsiding within a few weeks, with up to a year for the contour to refine fully, and warns that swelling can come and go and be worse in the mornings through the first year. That is guidance rather than data: it carries no cohort, no citation and no visible review date. The day by day account is at recovery, day by day.