Wow ... that is a painful break.
Laterals like that are nothing to sneeze at. When I was younger, and in LaSalle Military Academy, I got my thumb caught and smashed in the bolt of an M-1 rifle! Because the drill Seargent - who had a Hitler complex - had us hold the spring lever down for a prolonged time, my hand sweated and the damned bolt slammed shut on the tip of my thumb. Got a nice lateral split in the last bone ... from tip to knuckle! In short ... I feel for ya!