Ultrasonic/Piezo revision rhinoplasty. Firstly, is Piezo thought to cause more or less swelling and complications than traditional hammer and chisel for nasal bridge correction (no hump just lowering dorsum)? Piezo is the 'gold standard' by most but one surgeon has advised against since they said it can cause more swelling than traditionally used methods - is this right? Secondly, is bone 'rasped' with the Piezo device, and thirdly, how are osteotomies performed differently with Piezo compared to traditional methods?