ostitis

This specimen also illustrated (what the photograph cannot show) an accompanying condition of condensation of bone, or osteoplastic ostitis.

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

Fig. 118 illustrates the effects of a severe ostitis in pedal bones removed from hoofs with laminitis of several weeks 'standing.

Diseases of the Horse's Foot Harry Caulton Reeks

The porous condition of the bone, which is here shown, is a result of a rarefying or rarefactive ostitis.

Diseases of the Horse's Foot Harry Caulton Reeks

When the case is a serious one we have ample evidence to show that ostitis exists, and exists in a severe form.

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

-- A condition of periostitis and ostitis in the region of the pyramidal process of the os pedis, usually preceded, but sometimes followed, by fracture of the process, and characterized by deformity of the hoof and an alteration in the normal angle of the joint.

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

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

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