Missing the first knuckle of the index and middle fingers of the left hand can have an impact on your life in the future. In the case of left-handed patients, the frequency of using the left hand in daily life is much higher than that of the right hand, so once the first section of the left index and middle fingers are missing, the impact on life is relatively large, for example: eating, writing, and other activities that mainly rely on the thumb and index finger, which can not be carried out after the missing. In the case of a right-handed person, the impact is less, but more or less, life is affected. Patients who are missing the first section of the left index and middle fingers can choose the treatment according to their own situation. Patients who do not have high aesthetic requirements can be left alone, while those who have high aesthetic requirements can be treated with surgery or other methods, such as prosthetic fingers. The old left hand index finger and the first section of the missing middle finger will not affect human health, but if it is a fresh wound, untimely treatment can cause infection, you need to go to the hospital in time, complete the relevant examination, symptomatic treatment.