Sorry to hear you went down Nick, I hope you heal up fast!
I fractured my olecrenon basically twice in one season. The first time I went down I had to get stitches and when x-ray'ing it the doc improperly diagnosed the bone fragments floating around in my elbow to be asphalt and debris. My elbow and triceps remained sore, but manageable. About a month after that I was taken out from behind, going down on the same elbow. A very long story short, it ended up being an open fracture, the ER doc was going to release me stating there wasn't much they could do, but thankfully the on-call consulting Ortho decided he wanted to operate. Upon getting in there, they found over 80% of my triceps had sheared off with the fracture. Two small anchors were inserted into the elbow and the triceps were re-attached. Months of rehab to strengthen and gradual increase range of motion followed.
This was probably a worst case scenario, but it was basically my lack of triceps strength that prevented me from riding during rehab. The silver lining is that I'm now set to marry the nurse I had when I was in the hospital for the crash this coming fall
This is a very abbreviated version of a very long story, so if you want more details, or have questions, I'll help where I can.