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Table 7
IMPAIRMENT DUE TO ABNORMAL MOTION AND ANKYLOSIS OF THE METACARPOPHALANGEAL JOINT OF ANY FINGER
Abnormal Motion
Average range of FLEXION-EXTENSION is 90 degrees
Value to total range of joint motion is 100%
Degrees of Joint Motion
Flexlon from neutral
position (0°) to: 		LOST RETAINED % Impairment of Finger
0° 90 0 55
10° 80 10 49
20° 70 20 43
30° 60 30 37
40° 50 40 31
50° 40 50 24
60° 30 60 18
70° 20 70 12
80° 10 80 6
90° 0 90 0
Ankylosis
Joint ankylosed at:
0° (neutral position) 55
10° 52
20° 48
30° 45
*40° 54
50° 63
60° 72
70° 82
80° 91
90° (full flexion) 100
*position of function

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