Heller myotomy is a procedure used to treat achalasia, a disorder of the esophagus that results in the inability to swallow solids and liquids. In achalasia, the upper esophageal muscles become weak and stop working properly. The sphincter also has difficulty relaxing, so the food that is swallowed does not enter the stomach easily. The Heller myotomy procedure weakens the muscles and allows the valve between the esophagus and stomach to remain open so solids and liquids can easily pass through to the stomach. This procedure can be treated laparoscopically with a few small incisions, and may be combined with other procedures to help prevent acid reflux. Following surgery, most patients will begin a diet to help reintroduce foods back into their daily routine - most patients can return to a normal diet within a month.