Another anecdotal story: My brother was hit by a bus and broke his hip when he was in his 20s. The doctors said that there was a good chance that he could stay lame after the bones heal.
He started getting up and trying to walk as soon as he could, way earlier than recommended, to speed up (according to him, possibly instinctively) healing. Fast forward a couple years and there was no visible issue in his walking. Never heard of him complaining about his hip either after that.