[TA] the portion of the medial or deltoid ligament that extends from the medial malleolus to the neck of the talus. SYN: pars tibiotalaris anterior ligamenti collateralis medialis articulationis talocruralis [TA], anterior talotibial ligament, anterior tibiotalar ligament, anterior tibiotalar part of deltoid ligament, ligamentum mediale, ligamentum talotibiale anterius.