The picture shows the dorsal side of the lower leg with the following regions:
1 = Regio cruris posterior (posterior crural region, red background)2 = Regio genus posterior (posterior knee region)3 = Regio calcanea (calcaneal region)4 = Planta pedis (plantar region)5 = Regio retromalleolaris lateralis (lateral retromalleolar region)6 = Regio cruris anterior (anterior crural region)