 Our data do not suggest that the duration of pain relief was restricted by limited lidocaine release from the putty. Lidocaine levels remained elevated in the Orthostat-L™ group even beyond 00 hours which was in fact in line with previous in vitro results\[[@CR00]\]. Thus, Orthostat-L™ showed a much more favorable drug elution profile as compared to single administrations of local anesthetics. After single infiltration of the iliac crest with local anesthetics, plasma levels peak within 00--000 minutes and rapidly decrease thereafter\[[@CR00]\].  