The purpose of this research was to investigate the interaction between muscle tone at the wrist and self-care function in persons with hemiparesis. Dynamic and static muscle tone measurements were taken at the wrist. Self-care ability was measured with a chart review and the Klein–Bell Scale. The results of the study did not support the assumption that there is a significant relationship between muscle tone and activities of daily living for persons with hemiparesis. Perhaps other variables such as the general state of health, cognition, and perception should also be considered during the treatment of self-care.