ALBERTA PERMANENT CLINICAL IMPAIRMENT GUIDE - Workers ...

FINGERS/HANDS7. To calculate the rating for an MP joint with restricted movement:Loss ofmovementFull RangeXValue of the entire finger onthe appropriate chart minusthe total of the ratingsobtained for anyimpairments at the distaland middle phalanges andDIP and PIP joints.8. Where there is restricted movement of one or more fingers at the samejoint level, use the Chart corresponding to the number of fingers involvedat that level. e.g. When there is a loss of range of motion at the DIP jointof the index and ring fingers, use Chart 2, Two Fingers.9. For partial loss of range of motion of the carpo-metacarpal (CMC) joint ofthe thumb, apply the principles of the AMA Guides. Refer to theappropriate tables for radial abduction, adduction and opposition andassess the percentage loss of the thumb. Apply that percentage to theAlberta Guide rating for loss of the thumb. The rating for loss of range ofmotion cannot exceed 7.5% which is the scheduled rating for fusion of theCMC joint.10. To obtain the rating for complete fusion of a thumb joint see Chart I, page6C. Loss of Digital Sensation1. Sensory loss is rated as follows::Two-Point Discrimination RatingLess than 7 mmNil7 to 15 mm. 50% loss of sensationOver 15 mm100% loss of sensationTotal loss of palmar sensation of a phalanx, phalanges or finger, is ratedas the charted values for loss of the phalanx, phalanges or finger.Sensory loss on the dorsal aspect is not assessable.2. Loss of sensation is always rated in a ratio of 4 to 1 for the finger radialside to ulnar side and the thumb ulnar side to radial side.D. Disfigurement1. For disfigurement of a hand refer to the section on skin (page 48).Page 5COPYRIGHT 2006 All Rights Reserved October 1, 2006