I know that some topics require periodic editing, but the 24 hour restriction doesn't allow you to edit them.
I've come up with something to try to get around the problem. I've created a new forum for editing topics.
Here's how it will work. When you want to edit the topic hit the Note to Staff link and send a note that you need to edit it. When you get the email that the topic has been moved you should be able to edit it. When you're done, use the Note to Staff link again to have it moved back. Please include which forum it need to go back to as its not always clear to me.
Please note: This is not to be used for random posts just commenting on other things. This is for educational topics that may need to be tweaked from time to time or have information added.