There are some effects, which may not be great, but foreign bodies usually have precursor reactions after entering the body, which may cause inflammation, pain and edema. If there is a nerve in the implanted position, it will also affect the function of the nerve. In severe cases, it will cause muscle atrophy, and in light cases, it will cause numbness of hands and feet and numbness of limbs, so it is best not to let these things enter the body.