This morning I did the elliptical for 45 minutes. It felt fine.
MRI results are here! Good news - no stress fracture. It's a tibialis anterior muscle strain, along with a little tendonitis along the junction of the tibialis anterior and its tendon. Here's the radiology report:
Treatment? My doctor says physical therapy, walking boot for 3-4 weeks when not training, and hold off training for a bit longer, though I can get back into it hopefully in the next couple of weeks. She says cross-training is perfectly fine (oh yay!). I'm glad that I will be able to do the World Masters, though I won't be as fast as I could have been. Oh well, them's the berries.
Here's my new fashion accessory: