Moving a missing hand: children born with below elbow deficiency can enact hand grasp patterns with their residual muscles.

"Declarations Ethics approval and consent to participateAll subject recruitment and experimental procedures were approved by the Shiners Hospitals for Children Western Institutional Review Board (WIRB). Written, informed consent was obtained from participants prior to participating in the study. For participants who were too young to provide informed consent, written informed consent was obtained from parents/guardians and participant assent was obtained. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests, and no conflicts of interest. Competing interests The authors declare no competing interests, and no conflicts of interest."

"Funding National Science Foundation grant 2133879 (J.J.S and W.M.J). The project described was supported by the National Center for Advancing Translational Sciences, National Institutes of Health, through grant number UL1 TR001860 and linked award TL1 TR001861. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH."