Abstract
Humerus non-unions are difficult to treat, especially those with infected non-unions, bone loss, deformity, previous multiple surgeries and/or broken hardware. This paper presents our experience with the use of the Ilizarov frame with humerus non- unions.
Eight consecutive humerus non-unions were treated using the Ilizarov frame. Only loose or infected hardware was removed. The Ilizarov frame was applied using safe zones principles of Ilizarov, Catagni and Paley.
Aspetic non-unions were treated with deformity correction, sequential compression and distraction, bone grafting and intramedullary stabilisation for diaphyseal nonunions. Infected diaphyseal non-unions were treated intra-medullary reaming with or without excision of infected necrotic bone segment, followed by insertion of antibiotic cement rod and compression.
Elbow spanning frames were avoided for supracondylar non-unions. Fine wire fixation of the distal fragment was preferred instead. Free elbow movement was allowed.
There were two infected (diaphyseal) and six aseptic non-unions (four diaphyseal and two supracondylar) treated with this technique. Broken hardware was left in-situ in five cases.
The average time from the index injury was 14 months, with each case having had an average of 3.2 procedures, prior to the application of the Ilizarov frame.
Union was obtained in all cases. The average humerus shortening was 1.5 cm. There was no residual angular or rotational deformity. Infection was eliminated in both the infected non-unions.
Primary bone grafting was used in all aseptic nonunions. Additional bone grafting was needed as a secondary procedure in four cases prior to frame removal. T he average time spent in the frame was 4.5 months. The Ilizarov method is a useful option for the management of complex humerus non-unions. Patients learn to tolerate the fixator and can achieve functional shoulder and elbow range with the fixator.
