Septoplasty is a surgical procedure used to correct a deviated septum. When the bone and cartilage making up the septum – the wall that divides your nostrils – is crooked, it causes obstruction of the nasal airways and makes breathing difficult. This can lead to nosebleeds, snoring, sleep apnea and chronic sinusitis. Surgery to straighten the septum can eliminate these conditions and improve your quality of life.