The first MTP, also called the first metatarsophalangeal joint, is the big toe joint. A first MTP cheilectomy is a surgical procedure that removes bone spurs on the top surface of the big toe joint. Bones spurs develop due to arthritis of the big toe, also known as hallux rigidus. The spurs block the toe’s motion, which causes pain. A first STMP cheilectomy relieves pain and improves range of motion in the big toe.