Wrist Disarticulation

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- Discussion:
    - wrist disarticulation: include the removal of the radius and ulna to
          styloid processes;
    - shape of stump remains bulbous, thus permitting prosthetic attachment,
          leaving the elbow free and preserving full pronation & supination;
    - wrist disarticulation retains distal radio-ulnar joint preserves more
          forearm rotation, & retaining distal radial flare dramatically
          improves prosthetic suspension;
    - there is no benefit to retaining carpal bones;
    - tenodesis of major forearm motors stabilizes muscle units, improving
          physiologic and myoelectric performance;
    - conventional wrist units generally are not used because of additional
          length these add to the prosthetic arm, and, occasionally, terminal
          device must be modified because of length;
    - wrist disarticulation is also harder to fit with a myoelectric
          prosthesis because less space is available in which to conceal
          electronics and power supply;