The use of dynamic external fixation to obtain tibiocalcaneal fusion after Boyd's amputation.

Two patients sustained severe injuries of the foot and ankle, which were managed with Boyd's amputation. A large-pin dynamic external fixator was used to obtain fusion between the calcaneus and distal tibia. Boyd's amputation preserves limb length and prevents posterior migration of the heel pad (both are disadvantages of Syme's amputation). Use of a dynamic external fixator may result in reliable and rapid consolidation of the fusion (thus overcoming the disadvantage associated with Boyd's amputation).