Objective - An updated epidemiological assessment of traumatic injuries in amateur rugby union is warranted for prevention purposes. Method - The study population consisted of all players participating in the 2005–2006 French Rugby Union Championship in Federal Division IA. Information regarding each injury sustained during a match was collected via a questionnaire. Results - The rates of injuries resulting in at least 8 days and at least 1 month of downtime were 42.1 per 1,000 player-game hours (pgh) and 11.9 per 1,000 pgh, respectively. In 16% of cases, injuries occurred during a situation involving rough play or foul play. In 22% of cases, the player returned to the match even though the resulting downtime exceeded 8 days. The positions of prop, flanker, and three-quarter were the most affected. Scrums, tackles, and acceleration were the phases of play most likely to result in injuries. Lateral knee sprains, lateral ankle ligament (LAL) sprains, and lower limb muscle injuries were the most frequently reported. Conclusion - The implementation of preventive measures tailored to the factors associated with the occurrence of injuries is recommended. (R.A.)