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EFFECTIVENESS AND TIMING OF INTRAMEDULLARY NAILING IN THE TREATMENT OF ASEPTIC FEMORAL SHAFT NON-UNIONS AFTER FAILED PLATING.



Abstract

INTRODUCTION: Cases of aseptic non-unions in patients with a femoral shaft fracture, who have initially been subjected to internal fixation by plating, are not rare. The aim of this retrospective, polycentric study was to evaluate intramedullary nailing as method of treatment of these patients.

MATERIALS AND METHODS: Thirty patients with aseptic femoral shaft non-union, after plating, were treated by reamed intramedullary nailing (IMN). The type of nailing was chosen according to the type of non-union. The mean follow-up time was 30 months and for statistical analysis, the student’s t-test was used.

RESULTS: All non-unions were healed in a mean time of 7.8 months (5–18) after nailing. The mean healing time after fracture was about 18.6 months (9–54). The healing times were irrelevant to whether the fracture was open or closed, the type non-union (atrophic or hypertrophic) and the type of fracture, according the AO classification. On the contrary, the delay from the initial plating to definitive treatment (IMN) affected the healing time and the final outcome, in a statistically significant way. Healing time was increased by 34.45% when the definitive operation was performed after between 8 and 16 months compared to the ones before the 8th month and by 72.28% if the IMN was delayed to between 16 and 24 months.

DISCUSSION: In conclusion IMN can be an ideal and cost effective method in treating patients with aseptic femoral non-union, after plating failure. This definitive operation should be performed as soon as the non-union is diagnosed in order to avoid unnecessary delay in fracture healing.

Correspondence should be addressed to Ms Larissa Welti, Scientific Secretary, EFORT Central Office, Technoparkstrasse 1, CH-8005 Zürich, Switzerland