Lauren's injuries were certainly more spectacular than the normal road rash, but getting up and finishing after quite severe injuries is fairly normal in cycling.
The one I like was Fiorenzo Magni finishing 2nd in the 1956 Giro, after breaking his collarbone on stage 12, and his arm (humerus) on stage 16 (out of 22). Fortunately the arm was the same side as the collarbone; it would have been difficult otherwise.