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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXII | Pages 65 - 65
1 May 2012
Rose B Louette L
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Bipartite talus is a rare condition of uncertain aetiology, possibly congenital, with only six reported cases in the literature. Previously, these lesions have been successfully managed either conservatively, by excision of the posterior fragment, arthrodesis or one case by internal stabilisation using a postero-anterior screw which failed to lead to bony healing.

We report a series of four symptomatic cases of talus partitus in three patients, with a mean follow-up of 47 months (range 25-66 months). All patients had significant pain on presentation warranting surgical management. All three patients were male, with a mean age of 26 years (range 13-55 years) at surgery. Plain radiographs and computed tomography scans were obtained pre-operatively. All patients were reviewed at follow-up by an independent assessor.

The youngest patient presented aged 13 with a lesion without sub-talar arthrosis. He represented two years later with a similar lesion on the contralateral side. He was treated twice by internal fixation with two postero-anterior cannulated screws augmented with bone graft following preparation of the bone surfaces. The second patient presented with symptoms of isolated sub-talar osteoarthritis. He was treated with a sub-talar arthrodesis augmented with bone graft through a postero-lateral approach. The final patient presented late (age 55) with severe hind-foot osteoarthritis. His symptoms required treatment with tibio-talar-calcaneal fusion and a hind-foot nail. All patients reported a resolution of their symptoms post-operatively. Evidence of was seen radiographically in all cases.

We report the largest series to date of bipartite talus. All four cases were successfully treated surgically with three differing techniques, all of which utilised bone graft and internal fixation to achieve bony healing. We suggest treatment by a fusion of the talar fragments with associated limited fusion if the adjacent joints are markedly degenerate.