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FINE WIRE FRAME ARTHRODESIS FOR SALVAGE OF SEVERE ANKLE PATHOLOGY



Abstract

Introduction

Ankle arthrodesis is an accepted method of treatment for severe ankle pathology but no single method is universally successful. Compression is usually applied across the ankle joint and maintained with either internal or external fixation; both are associated with complications like infection, non-union, and pain.

Material and Method

We present our results and describe the surgical technique in managing 21 difficult cases using fine wire external frames in the salvage of severe ankle pathology. Nine cases were non-unions following internal fixation of distal tibial intra-articular fractures, seven were patients in whom two or three previous attempts at arthrodesis had been unsuccessful, and five patients had severe degenerative osteo-arthritis of the ankle joint.

Results

A sound arthrodesis was achieved in 19 out of 21 cases giving a union rate of 90.4%. The median period of fixation was 21 weeks, followed by a mean period of cast immobilisation of eight weeks. All except three developed pin site inflammation. Using Mazur’s functional ankle score there were twelve good results, five fair, two poor and two failures.

Conclusion

A fusion rate of 90.4% was achieved using this method. We recommend it for the salvage of failed arthrodesis or severe fracture non-union, particularly in the presence of infection.

The abstracts were prepared by Mr J. L. Barrie. Correspondence should be addressed to Mr J. L. Barrie, BOFSS Editor, Department of Orthopaedic Surgery, Blackburn Royal Infirmary, Blackburn, Lancashire BB2 3LR.