Wood said the event medics saw broken wrists and collarbones and concussions, but nothing that would be unusual at that level of racing.
"There was some luck, but we've got good quality management systems," he said.
"Over the years it's been fine-tuned."
Woods said one person received a lot of attention when he was knocked out on the pump track but he recovered quickly.
But Lakes District Health Board assistant communications officer Shan Tapsell said Crankworx had a "fairly sizeable impact" on the emergency department. Two patients were admitted while all the rest were discharged," Tapsell said.
"Some patients were required to have an extended period in ED for observation. The increase in visitors coming to Rotorua for Crankworx also resulted in some minor presentations to ED."
Crankworx Rotorua director Tak Mutu said he was happy with how few injuries there had been.
"I don't have the exact numbers but what I do know is we had fewer injuries than the national champs, " Mutu said.
"It's mountain biking, it's an extreme sport and injuries are going to happen. We've got people pushing the limits but it was nothing out of the ordinary."
Mutu said overall there weren't any major injuries.
"I know it was reported there was one guy in hospital with serious injuries ... he did go to hospital but was discharged the next day."