This fantastic video by Kevin Maggs, posted by the British Journal of Sports Medicine (2019), clearly explains the simple equation that leads to a high proportion of injuries: if mechanical load exceeds tissue capacity = increased risk of injury
Reference: MAGGS, K., 2019. Load vs Capacity and Injuries, British Journal of Sports Medicine. [viewed 20 February 2020]. Available from: https://www.youtube.com/watch?v=H1rp_v4Dr3g