Midfoot arthrodesis following multi-joint stabilization with a novel hybrid plating system.

Background: Several methods for fixation have been described for midfoot arthrodesis. Multi-joint arthrodesis at this level can be challenging because of bone loss and deformity, making it difficult to obtain a stable construct. We present the results of a novel hybrid plating system that incorporates locked and non-locked compression screws for multi-joint arthrodesis of the midfoot.

Method: A retrospective multicenter review of patients undergoing multi-joint arthrodesis with hybrid plating of the midfoot was performed to evaluate the time to radiographic arthrodesis. Hybrid plating was defined as a construct that incorporates locked and non-locked compression screws. Neuropathy was the only exclusion criteria. Radiographic arthrodesis was defined as bridging bone on one of the three standard foot radiographs in the absence of a joint gap on the other views, or by 50% or greater bridging bone on computed tomography. Etiology of the arthritis, presurgical comorbidities, body mass index, functional level and postoperative complications were evaluated.

Results: Seventy-two patients were evaluated, and arthrodesis was obtained in 67 patients at 6 weeks in 27 patients, 9 weeks in 26, 12 weeks in 11, and at 16 weeks in three. In five patients at least one of the joints were not fused at 16 weeks and were considered a nonunion. Complications were present in 12 patients (17%).

Conclusions: The healing rate and time to arthrodesis compared favorably to similar published studies. Based on these results, hybrid plating was a reliable and consistent alternative for fixation in midfoot arthrodesis, especially in multi-joint disease.