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OUTCOME FOLLOWING BURIED VERSUS EXPOSED KIRSCHNER WIRING OF DISTAL RADIUS FRACTURES: A RANDOMISED CONTROLLED TRIAL



Abstract

Introduction: K wiring is a popular technique to help maintain anatomic reduction of distal radial fractures. It has the advantage of being a semi-closed procedure, which is simple to perform. Complications related to K wires include infection, migration and damage to tendons and nerves.

We aimed to perform a randomized prospective study to determine the outcome of Buried versus Exposed K wire placement.

Methods: We prospectively recruited 60 consecutive patients with displaced distal radius fractures requiring K wiring to our study. They were randomized to Buried versus Exposed K wire groups.

Patient details were collected and follow up was performed at 2 and 6 weeks post op.

Infection at pin sites was measured on a 0 to 6 point scale. Superficial radial nerve was assessed with light touch and 2 point discrimination. EPL tendon was also assessed for damage.

Results: 60 consecutive patients were recruited to the study and randomized to buried or exposed k wires. There were 30 patients in each group.

No damage to EPL tendon was recorded in either group at 6/52 follow up.

There was a slight increased rate of superficial infection at exposed pin sites noted at 2/52 follow up however this was not seen at the 6/52 follow up. Superficial radial nerve damage was noted in one case only. This was in the buried k wire group and occurred following removal of the radial wire.

Conclusion: There appears to be slight increased risk of superficial pin site infection in the exposed k wire group at 2/52 but this is not seen at 6/52 follow up. Buried k wires require a second procedure to remove the wires and this runs the risk of superficial radial nerve damage.

Correspondence should be addressed to: EFORT Central Office, Technoparkstrasse 1, CH – 8005 Zürich, Switzerland. Email: office@efort.org