Anterior Plate-Supported Cannulated Screw Surgery for Ankle Arthrodesis: Clinical and Radiologic Results in Patients with Trauma-Related End-Stage Ankle Osteoarthritis.

ABSTRACT

BACKGROUND This retrospective study included 31 patients from 2 centers in Türkiye with posttraumatic ankle osteoarthritis treated with anterior tibiotalar arthrodesis using an anterior plate and cannulated screw fixation, with 6 months of follow-up. MATERIAL AND METHODS In this bi-center study, conducted between January 2018 and July 2022, we retrospectively reviewed the digital records of 31 patients with end-stage posttraumatic ankle osteoarthritis who were treated with anterior tibiotalar arthrodesis surgery using 2 or 3 cannulated screws and the anterior plating technique. Data on age, gender, comorbidities, and smoking were recorded, as were operative technique and graft use. Union characteristics, complications, visual analog scale (VAS) results, and Maryland functional scoring were assessed preoperatively and at the 6-month follow-up visit. RESULTS The mean age of the 31 (n=13 male, n=18 female) patients was 55.5 (19-82) years. The union findings were good in 26 (83.9%) of the patients and late in 3 (9.7%) of them. Nonunion was seen in 2 (6.5%) patients. Complications were observed in 7 (22.6%) patients. Union formation was statistically significantly prolonged among the cases with complications (P=0.002). The smoking rate was significantly higher in patients encountering complications (P=0.001). Among cases with complications, the VAS and Maryland scores recorded in the postoperative sixth month were significantly higher (P=0.027, P=0.018, respectively). The mean union time was 13.5±6.5 weeks among all of the patients. CONCLUSIONS Our study showed that cannulated screw fixation, strengthened with the common and easy-to-supply anterior reconstruction plating technique, had high fixation power and good functional results in patients with end-stage posttraumatic ankle osteoarthritis.