rarefactive

When the foot has been subjected to laminitis of some weeks 'duration, the same condition is also met with, being at the same time associated with rarefactive osteoplastic ostitis, conditions which we shall shortly describe.

Diseases of the Horse's Foot Harry Caulton Reeks

-- The changes occurring in the bone are essentially those of a rarefactive ostitis.

Diseases of the Horse's Foot Harry Caulton Reeks

Cases we have examined have undoubtedly shown this condition of osteoplastic periostitis, the rarefactive and osteoplastic changes in the bone itself, met with in older cases, occurring no doubt as a result of non-expansion of the horny box.

Diseases of the Horse's Foot Harry Caulton Reeks

We get, therefore, in many cases, a condition of rarefactive ostitis occurring side by side with a slowly progressive caries within the bone, while outside is occurring an osteoplastic periostitis.

Diseases of the Horse's Foot Harry Caulton Reeks

The erosion of the cartilage on its central ridge is most marked, and the porous appearance of the bone thus uncovered points to the existence within it of a rarefactive ostitis.

Diseases of the Horse's Foot Harry Caulton Reeks

The pressure of a tumour (in this case a keraphyllocele) has led to rarefactive changes in the bone, forming a neat indentation in the normal contour of the bone which serves to accommodate the tumour.

Diseases of the Horse's Foot Harry Caulton Reeks

It may occur as a result of, or, as we have just shown, exist simultaneously with the condition of, diffuse rarefactive ostitis.

Diseases of the Horse's Foot Harry Caulton Reeks

For an example of rarefactive ostitis as met with in cases of disease of the feet, we refer the reader to laminitis (see Fig. 118).

Diseases of the Horse's Foot Harry Caulton Reeks

A piece of bone undergoing rarefactive ostitis is redder than normal, and the openings of the Haversian canals are distinctly increased in size.

Diseases of the Horse's Foot Harry Caulton Reeks

-- We have seen from the pathology of this disease that it may commence either as a rarefactive ostitis, or as a synovitis and tenositis in connection with the bursa.

Diseases of the Horse's Foot Harry Caulton Reeks