Ilizarov external fixator: acute shortening and lengthening versus bone transport in the management of tibial non-unions.

Eighteen patients with tibial shaft non-unions were treated by the Ilizarov method between March 1995 and September 2001 by the senior author. Three subgroups of six patients each were treated by either acute shortening and lengthening, bone transport or simple stabilisation with a frame. All aspects of non-union, infection, shortening, deformity and bone loss were addressed by using Ilizarov principles. There were 10 cases of infected non-unions in the entire series. Bone resection in the shortening group was between 3 and 6 cm (median 4.6) compared to 3-7.5 cm (median 5.9) in the bone transport group. Union was achieved in all the patients with the average time to union at 12.1 months, 17.2 months and 8.0 months, respectively. The bone transport group required additional bone grafting in five patients (83.3%) prior to union compared to one (16.7%) in the acute shortening group.