Salvage of Failed Lapidus Arthrodesis.

Modified Lapidus arthrodesis (MLA) has become a common procedure to address hallux valgus deformity, being performed with increasing frequency. Advantages and benefits of MLA include multiplanar correction and addressing the deformity at its apex. Recent technological advances, which have been designed to produce consistent and predictable results, have further increased the popularity of MLA. As such, we are likely to encounter a greater number of complications, such as nonunion and malunion. Bone loss and sagittal plane malalignment are often encountered and can present technical challenges. This article reviews workup, surgical considerations, and technical approach to dealing with these complications.