Fig. 5. (A ) Schematic drawing of skin incision (arrow), a strip of skin anesthetized by lidocaine (dotted line), and area of blood flow measurement (square). (B ) Typical profiles of flare formation in a volar aspect of the forearm, determined by laser doppler imaging (LDI; Moor Instruments) in one subject in whom lidocaine was pretraumatically injected in a strip of skin. (C ) Schematic representation of (B ) (gray linear line showing the strip of skin anesthetized).