Extensile lateral approach to calcaneus. A, Excision of lateral wall exostosis. B, En bloc removal of lateral wall exostosis. C, CT scan showing excised lateral wall used as autograft bone block. D, Completion of Dwyer-type calcaneal osteotomy for type III calcaneal malunion with severe varus malalignment of hindfoot.(From Clare MP, Lee WE, Sanders R: Intermediate to long-term results of a treatment protocol for calcaneal fracture malunions, J Bone Joint Surg Am 87A:963, 2005.) SEE TECHNIQUE 58.6.