Adult acquired flatfoot deformity is generally associated with a collapsing medial longitudinal arch and a progressive loss of strength of the posterior tibial tendon (PTT). This condition is commonly associated with PTT dysfunction or rupture, which can have an arthritic or a traumatic etiology. Several causes have been proposed to explain the clinical evidence of tendon degeneration observed at the time of surgery including trauma, anatomical, mechanical, inflammatory and ischemic factors.
Anatomy, pathophysiology and classification of posterior tibial tendon dysfunction / Guelfi, M; Pantalone, A; Mirapeix, R. M; Vanni, D; Usuelli, F. G; Guelfi, M; Salini, Vincenzo. - In: EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES. - ISSN 2284-0729. - 21:1(2017), pp. 13-19.