Flexor Digitorum Longus transfer and medial displacement calcaneal osteotomy for posterior tibial tendon dysfunction: A clinical and radiographical analysis

Flexor Digitorum Longus (FDL) transfer and medial displacement calcaneal osteotomy has become one of the most popular modes of treatment for posterior tibial tendon dysfunction (PTTD). The purpose of this study is to show the outcome in 16 patients as well as to analyze the relationship between different radiographic parameters and the clinical outcome.Sixteen patients with an average age of 58 years were studied. Radiographical analysis included different angles measured pre- and postoperatively. Spearman's rho test was performed to evaluate the relationship between clinical and radiographic parameters.The preoperative AOFAS score was 45.9 and the postoperatively was 93.5.This study suggests that this technique is an effective and safe procedure for PTTD (Stage II) and that the talo-first metatarsal angle (AP) and the talo-navicular coverage angle (AP) have a good correlation with the clinical outcome, so they may be considered to predict the clinical evolution of these groups of patients.