Torsion of the testis is a common urological emergency. Blunt scrotal trauma also may precipitate an emergency. We recently treated 2 adolescent boys in whom blunt scrotal trauma induced testicular torsion. A retrospective review of the charts of 138 patients explored for acute scrotal pain at our hospital revealed a history of scrotal trauma in 3 of 57 patients (5 per cent) with testicular torsion and 7 of 73 (10 per cent) with torsion of the testicular appendages. The possibility of torsion must be considered in cases of scrotal trauma.