Long-Term Stability of the Glide Control Strategy

Inclusion Criteria: * Unilateral trans-radial or trans-humeral limb loss with a healed residual limb * Candidate for 2+ degree-of-freedom (DOF) myoelectric prosthesis as determined by the study prosthetist * Age of 18 years or greater Exclusion Criteria: * Prior experience with Pattern Recognition or Glide control * Individuals with a residual limb that is unhealed from the amputation surgery * Individuals with easily damaged or sensitive skin who would not tolerate EMG electrodes * Significant cognitive deficits as determined upon clinical evaluation * Significant neurological deficits as determined upon clinical evaluation * Significant physical deficits of the residual limb impacting full participation in the study as determined upon clinical evaluation * Uncontrolled pain or phantom pain impacting full participation in the study as determined upon clinical evaluation * Serious uncontrolled medical problems