Carruthers et al reported a scale for evaluating volume deficit over the temporal regions of the head. The authors are from the University of British Columbia, University of California Los Angeles, Yale University, UC Davis Medical Group and Allergan PLC.
Region:
(1) posterior to the orbit
(2) above the horizontal level of the zygomatic arch
(3) anterior to the external ear or hairline
(4) below the temporal fusion line
Appearance of Temple
Temporal Fusion Line
Term
Grade
rounded
not visible
convex
0
flat
may be visible
flat
1
shallow depression or concavity
may be visible
minimal hollowing
2
moderate depression or concavity
moderate prominence
moderate hollowing
3
severe depression and sunken
marked prominence of the temporal fusion line and zygomatic arch
severe hollowing
4
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