How long should I use crutches?

Today's episode comes from a question posted as a YouTube video comment.  That video was explaining how using crutches for a short period of time can help injured runners.  I wasn't talking about months of crutches, not many weeks, but a short period of time to try to accelerate the process of healing over-training injuries. In the comments someone posted and said, "How long would you use crutches for this...?"  How long should I use crutches?  Well, that's a million-dollar question!  And that's what we're talking about today on the Doc On The Run Podcast.