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Internal/External Rotation
Table 17
IMPAIRMENT DUE TO ABNORMAL MOTION AND ANKYLOSIS OF THE SHOULDER JOINT—ROTATION
Abnormal Motion
Average range of ROTATION is 130 degrees
Value to total joint motion is 33%
Degrees of Joint Motion
Internal ROTATION
from neutral position (0°) to: 		LOST RETAINED % impairment of Upper Extremity
0° 40 0   6
10° 30 10   5
20° 20 20   3
30° 10 30   2
40° 0 40   0
External rotation from
neutral position (0°) to:
0° 90 0   14
10° 80 10   12
20° 70 20   11
30° 60 30   9
40° 50 40   8
50° 40 50   6
60° 30 60   5
70° 20 70   3
80° 10 80   2
90° 0 90   0
AnkylosisJoint ankylosed at:
0° (neutral position)   60
10°   70
20°   80
30°   90
40° (full internal rotation)   100
Joint ankylosed at:
0° (neutral position)   60
10°   50
*20°   40
30°   49
40°   57
50°   66
60°   74
70°   83
80°   91
90 (full external rotation)   100
*position of function

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