A validated hand grading scale.
BACKGROUND
Following the popularity of facial cosmetic procedures to reverse the signs of aging, cosmetic procedures that rejuvenate the hand are being sought. Irregular surface pigmentation, prominence of superficial veins and tendons, thinning of the dermis, and loss of subcutaneous fat typically characterize aging of the hand.


OBJECTIVE
To develop the Hand Grading Scale for objective quantification of the severity of hand aging and to establish the reliability of this photonumeric scale for clinical research and practice.


METHODS
The Hand Grading Scale is a 5-point photonumeric rating scale that was developed to objectively quantify the severity of aging of the hand. Nine experts rated photographs of 35 subjects, twice, with regard to the aspect "hand aging" in comparison with morphed images. Inter- and intrarater variability was assessed by computing intraclass correlation coefficients.


RESULTS
The agreement between the experts was considerably high. Bubble plots (bivariate scatter plots) demonstrated linearity in judgment by the experts.


CONCLUSIONS
The 5-point photonumeric scale generated spans the severity of hand aging for which patients most commonly seek correction. The scale is well stratified for consistent rating.
Carruthers
Alastair
A
Department of Dermatology and Skin Sciences, University of British Columbia, Vancouver, British Columbia, Canada. alastair@carruthers.net
Carruthers
Jean
J
Hardas
Bhushan
B
Kaur
Mandeep
M
Goertelmeyer
Roman
R
Jones
Derek
D
Rzany
Berthold
B
Cohen
Joel
J
Kerscher
Martina
M
Flynn
Timothy Corcoran
TC
Maas
Corey
C
Sattler
Gerhard
G
Gebauer
Alexander
A
Pooth
Rainer
R
McClure
Kathleen
K
Simone-Korbel
Ulli
U
Buchner
Larry
L
D004954:Esthetics / Q000145:classification*; D005260:Female; D006225:Hand / Q000033:anatomy & histology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008297:Male; D010781:Photography / Q000379:methods; D015203:Reproducibility of Results; D015595:Skin Aging