If there are no complications and no adverse reactions, it is okay to leave the prosthesis in place for 20 years. Prostheses are categorized into in-vitro prostheses and implantable prostheses according to their purpose. The former are prostheses such as artificial limbs and dentures, while the latter are mostly implanted, such as artificial tendons, artificial heart valves, artificial joints, and so on. If you choose autologous fat or hyaluronic acid for prosthetic surgery, you will not have any rejection of your own, and you do not need to take it out. If you use artificial materials such as silicone, you do not need to remove the prosthesis if there is no redness, swelling, pain, etc. in the later stages of recovery. After the prosthesis surgery, it is important to pay attention to not to make the local area squeezed for a short period of time. You need to pay attention to the maintenance in daily life, and if necessary, you can go to the hospital regularly to rule out whether there is any abnormal phenomenon.