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General Orthopaedics

PRIMARY INTERNAL FIXATION OF AO C-TYPE TIBIAL PILON FRACTURES IS SAFE

British Orthopaedic Association (BOA) 2006



Abstract

Background

The optimal treatment for pilon fractures remains controversial. We have used early single-stage open reduction and internal fixation to treat these injuries and the purpose of this study was to determine the safety and efficacy of this strategy.

Methods

A cohort of 95 patients with AO type C tibial pilon fractures underwent primary ORIF. Of these patients, 21 had open fractures. Sixty-eight fractures were sustained in falls, 21 in motor vehicle collision, 5 in crushes and one in an aircraft crash. The principal outcome measure was wound dehiscence or infection requiring surgery. Radiological and functional outcomes were assessed at a mean of five years using the SF36 and the Foot and Ankle Outcome Score.

Results

Primary ORIF was performed within 48 hours of admission in 98% cases. Reduction was anatomical in 90% cases. Six (6%) patients developed a wound infection or dehiscence that required surgical débridement, giving a wound complication rate of 4/21 (19%) for open fractures and 2/74 (2.7%) for closed fractures. Of the two closed fractures, one occurred in a patient with local scarring from previous trauma, insulin-dependent diabetes mellitus and chronic alcohol abuse, and the other in a patient with schizophrenia, diabetes and peripheral neuropathy. Radiographic follow-up revealed 74% patients had normal appearances or mild osteoarthritic degeneration only. Functional outcomes revealed a reduced level of general health and mild disability.

Conclusions

Provided surgery is performed expeditiously by experienced orthopaedic trauma surgeons, AO type C pilon fractures can be stabilised safely and effectively by primary ORIF, with very low rates of wound complications, a high quality of reduction, and a good long term outcome. These results compare favourably with the published results for all other methods of treatment.