In the early years, when joint surgeons were faced with bilateral joint problems, they did not hesitate to operate on both sides at the same time, or even to do four joints in both hips and knees at the same time, in order to launch a satellite and create a sensational effect. But nowadays, joint surgeons are becoming more and more cautious, and in many cases, they only do one joint at a time, in order to reduce complications on the one hand; on the other hand, the doctor-patient relationship is too tense nowadays, and doctors are facing more and more pressure and risk. The following 67 year old female patient, during her outpatient visit, strongly wanted to do both sides together. After a full preoperative examination, the patient had no particular inherent risk and the key patient had full trust in the surgeon, I still decided to do both sides together. The assembly was completed in 45 minutes on the right side and 40 minutes on the left side, and the bilateral flexion and extension were perfectly balanced, and the postoperative full-length piece was three-pointed. The patient was particularly satisfied with the fact that he was on the ground 2 days after the operation and walked off the crutches for a week. In fact, to achieve perfect results, the patient’s trust in the surgeon is also the greatest motivation for the surgeon to do a good job!