Health authorities say they’ve seen an "unprecedented" rise in mountain-biking related injuries, with one hospital alone recording 14 cases in the last month. 🚵 🏥 Two young riders who suffered serious injuries have come together to tell their story of survival and share an important message: safety comes first. Despite wearing a full-face helmet, 14-year-old Elliott Senior ended up fracturing the C4 and C5 vertebrae in his neck and spent more than a week in the Women’s and Children’s hospital