In the literature, there are many questionnaires aimed at patients with head and neck cancer, developed both specifically and specifically for this patient group, evaluating the quality of life. Regarding the shoulder problems experienced by these patients, there is only one item in the literature called "The University of Michegan Head and Neck QOL (UMHNQOL) questionnaire" that evaluates shoulder pain. Apart from this, there is no other questionnaire in the literature that may adversely affect the quality of life to neck dissection and question both neck and shoulder problems together. The Neck Dissection Impairment Index evaluates the shoulder-related quality of life in a more comprehensive and more detailed manner according to the UMHNQOL questionnaire. The Neck Dissection Impairment Index evaluates the components of shoulder related quality of life in a wide range after neck dissection. Because the type of age, weight, radiotherapy and neck dissection are the most important variables affecting quality of life, patients in the high-risk group (e.g. young individuals, patients who have received radiotherapy and modified radical neck dissection) evaluated with the Neck Dissection Impairment Questionnaire can benefit from an earlier and more intensive rehabilitation.