I've just spent the night in hospital with ds1 aged 4 1/2, after he broke his arm in 2 places yesterday afternoon. After being told a thousand times not to climb on the top bunk (dd1's), him and dd2 still did, which ended up with ds falling over the guard rail and onto the floor. An ambulance to the hospital followed by morphine, x rays and a stay overnight so the arm could be manipulated back into place under a GA. All this with hardly any fuss, apart from the crying because of the pain.
He's now is a cast from armpit to knuckle for about 4 weeks, so lets hope the heatwave cools a bit for him.