The University of New Brunswick (UNB) Test of Prosthetic Function was developed to assess function with upper-limb prosthetic use in children. It is an observational assessment to measure skill and spontaneity of use with either body-powered or myoelectric prostheses. The Assessment of Capacity for Myoelectric Control (ACMC) is an observational assessment tool that is used to measure and register a person’s ability to control a myoelectric hand; it has been validated for persons from age 2 to 57. A team of researchers from Slovenia conducted a study to determine whether the UNB and the ACMC measure the same construct, and whether the ACMC can also be used for assessing function in children and adolescents who use a body-powered, upper-limb prosthesis. The results were published January 30, online ahead of print, in the European Journal of Physical and Rehabilitation Medicine.