 - Assessment of Capacity of Myoelectric control ACMC: The Assessment of Capacity for Myoelectric Control ACMC is an observational assessment developed to assess the ability of a prosthesis user to control a myoelectric prosthetic hand. Each item in the ACMC is an observable prosthetic hand movement, such as timing during grasping, or an observable prosthetic hand movement in relation to other body parts, such as uses the prosthesis over the shoulder. The ACMC assesses how skillful a prosthesis hand user performs different prosthetic hand movements when performing a bimanual activity. To perform the ACMC, a two-day training course is required. As not all participating centres have trained professionals, the use of the ACMC is not mandatory. 