Prostheses, Upper Limb, Elbow Component, Myoelectric
Definition : Elbow prostheses that are operated by myoelectric power and designed for partial functional (e.g., rotation, flexion) replacement of the elbow above the elbow articulation. These prostheses typically consist of external devices with a metal, hinged, yoke-like mechanism that can provide rotational and flexion movements and several locking positions; they may include totally or partially implanted components (e.g., sensors, electrodes). Elbow component prostheses can be attached at the proximal end with a socket to the residual limb (i.e., the humerus) or to another prosthetic device (e.g., a tube) and at the distal end to a tubular device (i.e., forearm replacement) that is, in turn, attached to a wrist prosthesis and a terminal device (e.g., hand, hook). Myoelectric controlled elbow prostheses typically incorporate small electrical motors and electrodes within the socket to pick up bioelectrical signals that trigger elbow operation as the muscles in the residual limb contract. The prostheses are used as a component of an upper limb prosthesis in patients who have congenital abnormalities or who suffered amputations due to illness (e.g., diabetes) or traumatic accidents.
Entry Terms : "Elbow Joints, External Limb Component, Powered" , "Myoelectric Prostheses"
UMDC code : 23383