Someone the other day mentioned the DeLuca decision as applied to their claim-
Basically this explains it and how the VA applies DeLuca.(from:http://www.va.gov/vetapp06/files2/0607373.txt)
C. DeLuca and extraschedular considerations
Functional loss due to pain under 38 C.F.R. § 4.40 (including
pain on use or during flare-ups) and functional loss due to
weakness, fatigability, incoordination or pain on movement of
a joint under 38 C.F.R. § 4.45 must be considered in the case
of