Purpose: The evaluation of the results of intramedullary nailing of open fractures of tibial shaft, which have been initially treated with external fixation.

Material & Method: Between 1997–2003, in 58 open fractures of tibial shaft (Gustillo type II & IIIa), the initially applied external fixation was replaced by an intramedullary nail type Russell-Taylor or Grosse-Kempf, either due to delay in union progress or due to frame‘s loosening. The conversion of external fixation to intramedullary nail was performed between 12th–15th week (average: 14th week), in two stages (1st stage: removal of EX.FIX, 2nd stage: insertion of I..N); with 13–22 days interval between the stages. In all cases, no elements of infection were noticed. In 45% of the patients bone grafting was performed at the time of nail‘s insertion. 37 patients were men and 21 were women, aged 19–52 years old (average: 31,7yrs). All patients were treated by the same surgical team and followed-up routinely.

Results: Union was achieved in 85% of the fractures, usually between 16–23 weeks (average: 18,7 weeks) from nail‘s insertion. In 7 cases, another operation was needed. Bone grafting in five, exchange of nail in two. Neither infection nor DVT was noticed. 82% of patients started sociallizing within 4 weeks, while 79% returned to pre-injury activities.

Conclusions: In cases that the union progress of the externally fixed open fractures of tibial shaft is not satisfactory; the conversion of external fixation to intramedullary nail seems to be a reliable option. The key points for the success of the method are timing and conditions of that conversion.