I broke mine in 2 places the bit in the middle spun 90 deg and was a really sore point that looked like it wanted to break through the skin, getting back on the bike (mx'r) was only delayed while waiting for the broken ankle to heal (same crash you see), so about 8 weeks until racing again, sadly broke the collarbone and the other shoulder (humerous, and not that funny at all) at about 9-10 weeks……
The good news was I knocked the horrible pointy bit that was due an operation to shave off back and up so no need for the opp. 🙂
No agro from the collar bone at all, however the not so funny humerous break isnt the same story, 25 years on and got a sore shoulder all the time. Agrevated bursa or something, I await some X rays, cortizone and whatever for that, as recent shed base digging (see chat forum) has really annoyed it..