It occurs to me that, odd though it might sound, a quick check against a
walrus bone (say a metatarsal or a femur) might be profitable. For the
walrus is a mammal that normally develops the normally-abnormal condition
of pachyostosis (i.e. so that the blubbery bottom-feeder can manage to be
negatively buoyant). We probably all know some blubbery bottom-feeders who
live on couches during football season, but the walrus' bones might
compare to this patho chicken. Cheers -- Dr. Deb
> 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.
>
> /Lena
>
>
> ----- 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
>
> Dear Lena,
>
> 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
> point.
>
> Best regards
> Jen Wooding
>
> 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
>
>
> Dear all,
>
> 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
> anything similar?
>
> http://i893.photobucket.com/albums/ac137/ossamentaDW/Benbilder/BFRfowltibiotarsus.jpg
>
> Any ideas would be appreciated.
> /Lena
>
>
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