Achalasia is a disease named after the pain in the heel, which refers to the pain and difficulty in walking caused by chronic strain around the heel tuberosity, often accompanied by the formation of bone spurs in the heel tuberosity. This disease is mostly seen in 40-60 years old middle-aged and obese people. Clinical heel pain is often accompanied by the formation of bone spurs, but the degree of heel pain and the size of the bone spurs is not proportional to the direction of the bone spurs. If the bone spur is diagonally downward, there is often pain; if the bone spur is parallel to the heel bone, there may be no symptoms. Although there are various causes of achalasia, the main cause is chronic inflammation of the metatarsal tendon membrane or the attachment of the Achilles tendon. Qu Xintao, Department of Orthopedic Diseases, Jinan General Hospital, Jinan Military Region Pathogenesis: (a) Achilles tendon bursitis at the stopping point: mainly due to friction from wearing shoes, especially for women who often wear high-heeled shoes, repeated friction between the back of the shoe and the Achilles tuberosity, resulting in chronic aseptic inflammation of the bursa at the Achilles tuberosity, which makes the bursa increase in size and thickening of the wall of the bursa, resulting in the occurrence of this disease.