Bipartite talus

NewsBot · Dec 27, 2012

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Bipartite talus: A case series and algorithm for treatment
B. Rose, C. Southgate, L. Louette
Foot and Ankle Surgery Available online 26 December 2012

Background
Bipartite talus is a rare condition of uncertain aetiology, with various treatment options described.

Methods
We report five symptomatic bipartite talus cases in four male patients warranting surgical management. All patients were reviewed by an independent assessor.

Results
The youngest patient presented with bilateral lesions without sub-talar arthrosis. He was treated twice by internal fixation with bone grafting. The left side failed to unite. The second patient presented with isolated sub-talar osteoarthritis. He underwent fragment excision and sub-talar arthrodesis with bone graft. The third patient presented aged 55 with severe hind-foot osteoarthritis, and underwent tibio-talar-calcaneal fusion. The final patient was treated with fragment excision and sub-talar arthrodesis. All patients reported symptom improvement or resolution post-operatively. Four cases showed evidence of radiographic union.

Conclusions
We suggest a treatment rationale of fragment fusion if large enough, or excision if not, with associated limited fusion if the adjacent joints are markedly degenerate.
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Rob Kidd · Dec 27, 2012

They do not say where the Division was. Was it phylogenetic - ie in an os-trigonum area? Can anyone think of an explanation for a division elsewhere?

Admin2 · Dec 28, 2012

Rob Kidd said: ↑

They do not say where the Division was. Was it phylogenetic - ie in an os-trigonum area? Can anyone think of an explanation for a division elsewhere?
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Here are a couple of images from the paper:

Rob Kidd · Dec 28, 2012

I would suggest phylogeny is the culprit. Although this suggests a "very large" os-trigonum, I would put my money behind it. Most would agree with the Freddie Wood Jones version of the reptilian tarsus - the main dissenter is O J Lewis - and I have attached figures from FW Jone's book. As you can see the hominid talus (mammal talus?) is a composite of the precursor reptilian tibialis and intermedius. And we are all familiar with how, once in a while, the posterior talar tubercle remains unfused. I would suggest that we are looking here at an unfused, and large intermedius bone. And they tell us that there is no evolution?

Rob

Sorry for my bluntness; I have recently had a gut full of creationists lies, half truths and misquotes - I guess it goes with the territory

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Rob Kidd Well-Known Member

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Attached Files:

bipartite2.JPG

bipartite.JPG

Rob Kidd Well-Known Member

Attached Files:

Reptilian Homologues.jpg

Painful bipartite sesamoids

sesamoid fractured or bipartite?

bipartite or sesamoid fracture?

bipartite or sesamoid fracture?

Bipartite -v- Fractured Sesamoids

Bipartite Tibial Sesamoid

Interesting: BiPartite Cuneiform

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