While our experimental radishes haven't got round to making their flower spike yet, we have found some of last year's radishes that have kept going (honestly, I didn't realise they were that hardy - remember that, gardeners!), so here are some photos of the flowers / pods that you will be looking out for soon.
You might also be getting some snapping of the radish leaves, particularly of the outermost leaves. This doesn't seem to be a problem for the plant - the example below has been like that for a while, and the leaf still seems to be functioning fine! Eventually the leaves will probably shrivel up and fall off, while the flower spike is still going; this is entirely normal for these plants. Be aware that the flower spike is also quite brittle, and this would be a problem there!