the rate of Covid in the general population is only around 1%, so they're not likely to be admitting that high a proportion of people with broken legs who happen to have Covid
No, but the problem is the people with broken legs who acquire it in hospital, there's stats saying that's 10-30% depending on hospital, what we don't know is how those groups die or if they stay in hospital - the one with the broken leg will likely leave the hospital almost immediately, others it will likely hasten death, others will stay in hospital for a long time - so there's lots of info missing in the headline stats.
(also it's not 1% of broken leg people, since the PCR can detect past infection too, so it depends on number that remain positive in the previous 90 days of the 10-15% who'd've had it, the numbers on that depend on how hard you look for it I believe, and I don't think there's the evidence for that)