innervated by has muscle origin has muscle insertion has muscle antagonist tibia tibial nerve tibialis anterior fibula navicular bone of pes distal tarsal bone 1 tibialis posterior The Tibialis posterior is the most central of all the leg muscles, and is located in the posterior compartment of the leg. It is the key stabilizing muscle of the lower leg. [WP,unvetted]. tibialis posterior muscle NCIT:C53078 BTO:0000867 ibialis posticus FMA:51099 musculus tibialis posterior EMAPA:36255 MA:0002394 Wikipedia:Tibialis_posterior_muscle SCTID:361824007 UBERON:0001667 tibialis caudalis posterior tibialis tibialis