T1 - Skill assessment in upper limb myoelectric prosthesis users
Conventional myoelectric control schemes use an amplitude measure at each electrode site (such as the root-mean-square or mean absolute value of the EMG) to quantify the intensity of contraction in the underlying muscles. Control is achieved by mapping this activity to the required prosthetic function; therefore, it is desirable that these muscles be functionally related to the functions that are to be restored. If physiologically appropriate muscles are available to restore lost function, the EMG can be used intuitively, such as when a person with transhumeral amputation controls a prosthetic elbow by using the residual biceps and triceps. In the absence of physiologically appropriate musculature, substitutions must be used, such as using the wrist flexors/extensors to control a hand. If more than one device is to be used, mode switching is often the only strategy (using a hardware switch or co-contraction) to divert control to an elbow, wrist, or hand. This method of control is, however, slow and counterintuitive.
T1 - Tactile feedback for myoelectric forearm prostheses
KW - myoelectric forearm prostheses
The use of myoelectric upper extremity prosthetic devices is considered medically necessary when ALL of the following criteria have been met:
A myoelectric-controlled prosthesis may be a good choice if you:
The use of myoelectric upper extremity prosthetic devices is considered not medically necessary when any of the criteria above are not met.