|
Table 2
|
|
IMPAIRMENT DUE TO
|
|
ABNORMAL MOTION AND ANKYLOSIS OF THE
|
|
METACARPOPHALANGEAL JOINT OF THE THUMB
|
|
Abnormal Motion
|
|
Average range of FLEXION-EXTENSION is 60 degrees
|
|
Value to total range of joint motion is 100%
|
|
|
Flexion from neutral
position (0°) to:
|
LOST
|
RETAINED
|
% impairment of Thumb
|
|
0°
|
60
|
0
|
55
|
|
10°
|
50
|
10
|
46
|
|
20°
|
40
|
20
|
37
|
|
30°
|
30
|
30
|
27
|
|
40°
|
20
|
40
|
18
|
|
40°
|
10
|
50
|
9
|
|
60°
|
0
|
60
|
0
|
|
|
|
|
|
Ankylosis
|
|
Joint ankylosed at:
|
|
|
|
|
|
0° (neutral position)
|
55
|
|
|
10°
|
|
49
|
|
|
20°
|
|
43
|
|
|
30°
|
|
52
|
|
|
40°
|
|
61
|
|
|
50°
|
|
70
|
|
|
60° (full flexion)
|
|
80
|
|
|
*position of function
|
