Avascular Necrosis of the Talus Following Charcot Midfoot Beaming.

Avascular necrosis (AVN) of the talus results from disrupted blood flow, causing bone death, collapse, and joint degeneration. Its vascular structure makes it prone to ischemia, with causes including trauma, corticosteroids, and metabolic disorders. Charcot neuroarthropathy shares pathologic similarities with AVN. A study of 135 Charcot reconstructions found talar AVN in 14%, linked to talonavicular dislocation, renal disease, and high body mass index. Starling resistor modeling explains microcirculatory failure. Management ranges from immobilization to surgical options like arthrodesis and distraction osteogenesis. Early diagnosis and tailored treatment are critical for stabilizing joints and preserving limb function.