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Valgus deformity
2%
39/1810
Varus deformity
7%
124/1810
Equinus deformity
85%
1537/1810
Cavus deformity
3%
58/1810
Planus deformity
31/1810
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The Chopart amputation is an amputation of the foot at the level of the calcaneocuboid and talonavicular level. Historically, its use has been criticized because an amputation at this level results in a muscular imbalance with flexor predominance and equinus deformity that eventually leads to stump breakdown. To prevent this complication it should be coupled with Achilles tenotomy (vs. lengthening) as well as transfer of the tibialis anterior insertion to the talar neck. Advantages of the Chopart amputation include increased limb length and maintenance of heel proprioception that cannot be preserved with more proximal amputations. Lieberman et al argue in patients with peripheral vascular disease, it is important to preserve as much tissue as possible to preserve maximum function. They recommend that with appropriate care, an amputation at the Chopart (calcaneocuboid-talonavicular) level can give a good functional result. Figure A shows a lateral radiograph of a Chopart amputation, while Illustration A is a diagram showing this amputation.
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