The fellow whose wrists/forearms were broken may also have had a head impact and concussion because his memory of the incident wasn't clear.
In an accident things happen
very fast. Don't fault his memory. I took a fall last September trying to avoid getting my feet wet on a stormy Lake Superior beach while trying to take a photo. Never any head contact but I couldn't tell you many details. All I recall was an impact to my left femur breaking it, laying on the beach unable to move my left leg at all.