As a beginner utlra runner I suppose some type of injury is inevitable. Although I diligently tried to apply the 10% rule, "listen to my body," and all that stuff, ultimately my body has to adjust to the new demands that I am placing on it. For me, a brief injury is one of those adjustments.
About a month ago I did a 28 miler on Saturday, followed by 10 on Sunday. There were no issues while running, other than the outside of my ankle felt a little off when I finished my run on Sunday. Four hours later, it was screaming. Any motion in the ankle joint caused immediate (negative) feedback. I went to an ortho who said I had synovitis. He prescribed NSAID's and recommended physical therapy. The drugs worked and a few visits to a therapist at D1 later (for soft tissue work) and my ankle seems to be back on track. I was able to run 24 this past Saturday and am going to go for 30+ this weekend. If the ankle feels good, I will be heading towards the JFK50 in two weeks! Although I had to adjust the volume of my training I still feel better prepared for this race than I did earlier this year for the TNFEC 50.
In total, I took two weeks off to get back to the point where I am running pain free. Although the therapist said I could run on it without doing permanent damage during that time, I figured it was better to go into the JFK50 a little under trained by missing one long run than hobbling out there for 11 hours (hopefully less) on a bum ankle.