Chest surgery for seniors in their 70s usually does not involve cutting off ribs. Chest surgery includes total pneumonectomy, partial lobectomy and partial lung resection, radical resection of middle and high esophageal cancer and resection of mediastinal tumors, lung wedge and partial resection, resection of lower esophageal cancer, pulmonary pleurectomy. Generally, surgery does not need to cut ribs, and there is a kind of special rib spacer, which can make the rib gap wider for the convenience of surgery. If it is a particularly large open heart surgery, it may be necessary to cut the ribs, but after the surgery, the ribs can grow back, so there is no need to worry too much. Open-heart surgery is relatively traumatic and risky for elderly patients in their 70s, so patients are advised to consult their treating doctor for the appropriate treatment according to their specific situation.