This issue of Foot and Ankle Clinics, guest edited by Dr. Normal Espinosa, will cover a number of important aspects of the Subtalar Joint in relation to foot and ankle surgery. Topics discussed in this issue include, but are not limited to: Anatomy of the subtalar joint; Biomechanics of the subtalar joint (including normal and pathologic); Open technique for in-situ subtalar fusion; Traumatic injury to the subtalar joint; subtalar instability; and Fractures of the lateral process of talus, among others.

This issue will include papers on the following: Biomechanics of the normal and pathological ankle joint, Ankle arthrodesis versus ankle replacement, The concept of ankle joint preserving surgery, What are the issues in treatment of patients with rheumatoid arthritis when planning and performing ankle replacement?, Mobile and fixed bearing prostheses, Techniques and pitfalls with the Salto prosthesis, The Hintegra prosthesis: Techniques and pitfalls, The Mobility Total Ankle Replacement: Techniques and pitfalls, Treatment of the arthritic valgus ankle, Treatment of the arthritic varus ankle, Revision total ankle replacement, Salvage arthrodesis after failed total ankle replacement, Managing specific complications related to total ankle replacement, The New Zealand total ankle registry.