Yes. Even if you sign a consent form, the doctor still has a duty to provide medical care in accordance with accepted medical standards. If they fail to do so, you could still have a claim.  The doctor also must ensure that you’re actually fully informed about the procedure and understand the risks before proceeding with the treatment. Signing a form alone may not be enough. Lack of informed consent may be grounds for a malpractice suit. See Introduction — Common forms of medical malpractice.