It is indeed very odd, and the lack of pathologies on the external parts of the bone would seem to rule out osteopetrosis. Unless this is what osteopetrosis looks like in the initial stage. It might be difficult to confirm this, as I assume this condition would go unnoticed until a late stage - after all, birds don't get x-rayed regularly for no particular reason.
----- Original Message -----
From: "Jen Wooding" <[log in to unmask]>
To: [log in to unmask], "Lena Strid" <[log in to unmask]>
Sent: Wednesday, 17 November, 2010 2:55:40 PM
Subject: Re: [ZOOARCH] Pathological fowl tibiotarsus
I have never seen anything like that - thank you for posting a link to
the photograph. The first thing that came to mind was osteopetrosis.
Baker and Brothwell (1980) state that this condition (associated with a
viral aetiology) starts in the tibiotarsus and does result in new bone
formation within the medullary cavity. However, in photographs I have
seen of this condition, there is also obvious pathological alteration to
the diaphysis of the long bones in the form of irregular compact new
bone formation. Whereas the diaphysis of your tibiotarsus look to be
unaffected. The new bone in your photo seems very solid and uniform in
morphology as well.
I am sorry I cannot help more but I hope this may help as a starting
University of Bradford
--- On Wed, 11/17/10, Lena Strid <[log in to unmask]> wrote:
From: Lena Strid <[log in to unmask]>
Subject: [ZOOARCH] Pathological fowl tibiotarsus
To: [log in to unmask]
Date: Wednesday, November 17, 2010, 2:32 PM
I have a medieval fowl tibiotarsus where the marrow cavity has been
significantly reduced by internal bone growth. It doesn't look like
medullary bone, so I assume it's some sort of pathology. Has anyone seen
Any ideas would be appreciated.
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