Vertical Sleeve Gastrectomy has been shown to significantly reduce weight and has been approved as a treatment of morbid obesity. The standard laparoscopic operation requires five small incisions for the introduction of instruments and the band into the patient's abdomen. The investigators have developed a technique for performing this operation through a single incision at the belly button. This study compares this method to the conventional 5-incision approach.

Inclusion Criteria:

• BMI >40
• ASA I or II

Exclusion Criteria:

• Comorbid cardiac, pulmonary, renal, hepatic disease
• Bleeding disorder
• Previous gastric/esophageal surgery