[Comparison of two point discrimination on the thumb and the big toe]

The functional value of operations for the replacement of thumbs by autotransplantation of the great toe depends on the recovery of sensibility. The two-point-discrimination of 107 thumbs compared to 121 great toes in persons aged between 10 and 70 years was examined. The thumb had age-independent mean value of 4,5 mm while that of the great toe decreased from 9,1 to 16,0 mm.