The time to be able to squat after knee arthroplasty depends on the patient’s recovery, preoperative joint condition, and the presence of other comorbid diseases, and there are some individual differences. If there is no underlying disease, patients can generally get out of bed three days after surgery, be discharged from the hospital one week after surgery, be able to hold a unilateral crutch within six weeks, and walk independently three months after surgery. Patients are not recommended to squat, kneel or run after arthroplasty, as this can cause wear and tear on the joint prosthesis and affect its service life. The joint prosthesis needs to be protected, and damaging movements should be minimized.