Congenital pseudarthrosis of the tibia treated with a combination of Ilizarov's technique and intramedullary rodding 15 cases followed for mean 4.5 years

Abstract

Background and purpose Ilizarov's technique and intramedullary rodding have often been used individually in congenital pseudarthrosis of the tibia. In this series, we attempted to combine the advantages of both methods while minimizing the complications. Methods We reviewed 15 cases of congenital pseudoarthrosis of the tibia (CPT) who were treated with a combination of Ilizarov's apparatus and antegrade intramedullary nailing between 2003 and 2008. The mean age at surgery was 7.5 (3-12) years and the mean limb length discrepancy was 2.5 (1.5-5) cm. At a mean follow-up time of 4.5 (1.6-7.2) years after the index surgery, the patients were evaluated clinically and radiographically for ankle function (AOFAS score) and for malalignment, signs of union, limb length discrepancy, and complications. Results 14 patients achieved union, in 6 patients primary union and in 8 patients after secondary procedures. The AOFAS score improved from a preoperative mean of 40 (20-57) to 64 (47-75). The main complication was refracture in 1 patient, and non-union in 1 patient. Interpretation The combination of the Ilizarov technique and conventional antegrade intramedullary nailing was successful in achieving union with few complications, though this should be shown in long-term studies lasting until skeletal maturity.