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A diabetic foot — gangrene; below-knee amputation; prosthesis fitted after healing. Amputations (indications — trauma — mangled, vascular — diabetic gangrene, tumor, infection: level — preserve length — below-knee better; technique — flaps, myoplasty; stump — shape — bandaging; complications — phantom pain — gabapentin, infection): prosthetics (fit — after healing — temporary → permanent; train — physiotherapy — gait; below-knee — SACH foot; myoelectric — upper). Clubfoot (CTEV — Ponseti — serial casts week 1 + tenotomy + boots-brace — 3–4 years — compliance). The level decides function — save the knee.