Potential Pitfalls: As the QOR-40 instrument is a survey, it is prone to inter and intra patient variability. The investigators are controlling for inter-patient variability by having patients complete the instrument before surgery to collect an individual baseline. The investigators are relying on a 25% recruitment rate of eligible patients in order to complete the study in the stated timeframe. The study has an important but narrow focus, it is not feasible to perform subgroup analysis on the small study size.