■ Main Page
■ Current Research
■ Past Research
Characteristic position of fingers caused by severe forearm weakness (arrow).
Severe muscle wasting of the thighs (quadriceps) and forearms.
Wasting of the thigh muscle (calf not yet affected).
Severe muscle wasting of the forearms.
Weakness of finger flexion in patients attempting hand grip (make a fist) with partial involvement (above) and end-stage (below).