subtalar
adjective
sub·ta·lar
| \ ˌsəb-ˈtā-lər
\
\
Medical Definition of subtalar
: situated or occurring beneath the talus
specifically
: of, relating to, or being the articulation formed between the posterior facet of the inferior surface of the talus and the posterior facet of the superior surface of the calcaneus
the subtalar joint subtalar arthrodesis