Management of the Subtalar Joint Following Calcaneal Fracture Malunion.

Subtalar joint arthrosis is common following intra-articular calcaneus fractures. The appropriate management of pain secondary to posttraumatic arthritis depends on the status of the remaining posterior facet articular cartilage, the magnitude of any residual joint displacement and distortions in the overall morphology of the calcaneus. In select circumstances, joint-preserving surgical techniques may be considered including lateral wall exostectomy, far lateral posterior facet joint debridement, and intra-articular osteotomies. When the subtalar joint is not salvageable, some form of arthrodesis procedure is pursued. Occasionally, an extra-articular osteotomy may be necessary in combination with arthrodesis to correct deformity.