This issue will address: posterior tibial tendon insufficiency, the Achilles and gastrocnemius tendon complex, insertional failure of the posterior tibial tendon, tarsal consolidation in the elderly, tendon replacement options in the management of flexibility AAFF , reassessment of the distribution of anterior tibial muscle grafts, Calcaneal osteotomy as an adjunct to AAFF, extension osteotomy of the lateral column, treatment of AAFF, recurrent deformity of the flexible foot, rigid arthritic flat foot in adults, talochondral arthrodesis of the flexible or rigid foot in abduction, PTTD stage IV