Can a Cortisone injection as stop gap for plantar fasciitis in runner

I was just at the International Foot & Ankle foundation meeting in Lake Tahoe listening to a lecture given by a Professor of Biomechanics and Podiatric Medicine at Barry University. He said that a cortisone injection can be used as a "stop gap treatment" in heel pain caused by plantar fasciitis.  The idea is that some runners may need pain relief sooner than would normally be expected. It is true that corticosteroid injections can reduce the inflammation in and around the plantar fascia and quickly reduce pain.  When I had "normal practice" with "normal patients," I used to treat plantar fasciitis with corticosteroid injections pretty much daily.  But I almost never do plantar fascia cortisone injections now. Can a corticosteroid injection serve as a stop gap for runners with heel pain?  That's what we're talking about today on the Doc On The Run Podcast.